Usually I get tired of "sponsored" videos, because the RUclipsr often ends up being just another salesman and talks only positive blah blah blah about this and that product. But I like this one a lot, Matthias as always hunting details/explaining, and that Flexispot send over a set of standing desk legs saying: " you just open them up and show the inside mechanics", a sort of we-have-nothing-to-hide-and-stand-100%-behind-our-product-and-the-quality policy I think is really cool. Thanks Matthias and Flexispot
Very nice that Flexispot provided a complete desk rather than just the leg Matthias needed for his dissection and inspection. But it may have been easier for Flexispot to send the entire product package rather than unpack it to find and select out just the needed bit - once we saw how intricate the assembled packaging was from his getting and repacking video segments. Matthias, what would have the higher entropy the package or the fully assembled desk?
@@daylen577 A sponsorship is a little more complicated. Of course he can do whatever he wants with his property, it's not an apple or Sony, but they can cancel the contract if he does something they don't like, or just don't pay him for this video. So sad those tables are just to expensive, I always build my own desks so 500$ or more is (pardon the pun) off the table for me
@@daviniusb6798FlexiSpot E2 is 120 bucks right now for just the base with no top. I got one a few months ago and it's decent. I don't need the extra range or weight capacity of higher models so it's working for me fine.
FlexiSpot is insanely expensive, you can get an IKEA desk WITH top (albeit veneered MDF) for less than their frames alone cost, and IKEA is still quite expensive.
@@daviniusb6798 If i had the income for it id go with flexispot, but for now i have two standing desks with tops that i got cheap off amazon and they work fine. A 40in wide for around $150 and a 59in for around $180. sure they wont have the same weight capacity and one motor drives both legs, but it does what it needs to do.
Getting into a sponsorship with Matthias as a Company must feel like you have been out for some time with that new love and day over day you realise he is asking for the wierd stuff....if you catch my drift 🤣
I was surprised by the brake mechanism, so simple but it works great. I wanted to comment on it but wasn’t sure what to say, you said it perfectly, thanks.
to me that makes this "ad" worth is because its basically a 7 minute long "told you so" while showing these things are actually build properly and are good value.
Woah, using standing desk for a sewing machine is brilliant. This will save me so much hassle, not only is this more comfortable but I won't obscure the light as much.
I was wondering how you'd solve the issue with the two telescoping segments now being out of alignment since the center and ends were allowed to spin. I probably would have taken it all apart again, not recognizing that letting the end spin by taking the screws out would fix the issue. Thanks for addressing it in the video, it would have confused me.
My first thought was that I'd need to take it all apart again too, but then I remembered with the end spinning in there, only one segment gets moved, so just took out those screws to adjust just one segment
I understood the 'screw inside a screw' concept, but until now I didn't understand how the movements of all the sections was coordinated. Now I see how that works- Thanks Matthias!
No wonder they were ok with you taking it apart. That's an impressive mechanism and a high quality product. Your video is an advert that Flexispot could never make and have as many interested eyes as you have. Kudos to you and Flexispot.
Next video. Alarm clock linked to the standing desk legs at the head if your bed to help you get up in the morning. Top tip - silk sheets for a more graceful exit from the bottom of your bed
It's so cool that you finally got to make this Video. Awesome how you predicted the internals of the leg and where able to confirm it now. As a bonus there are no broken Table legs or scrap metal for the dump.
I prototyped something like this for an unrelated product a few years ago, it would've been nice to have this for a reference! I was working off an idea I had but without knowledge of any similar product I could get my hands on.
I saw a video guy that used a flexispot for his assembly table in his workshop. And he could raise it to the height of his planer or his table saw to be an out feed. Or he could raise it higher when he was assembling things. Seems like a good idea.
Really interesting to see the point on it being useful when working with the sewing machine - I might have to check one out (and maybe extend the pedal on the sewing machine too)!
Can you incorporate some of that tech into one of your tools, like a vise? Also, when I worked in the typewriter division at IBM, that gizmo was called a spring clutch. A Selectric typewriter has 3 different versions of it. Pick one up and take it apart; they're fascinating.
I suppose it could be a tail vise, but I think hand cranking a vise makes more sense. In which case, I'd just be usingthe outer screw from the mechanism. Would be kind of a waste.
Make a lift on wheels instead of a standing desk. A friend of mine has this hydraulic bench on wheels to move heavy machines from one place to another. We used it to move a dryer that was sitting on the washing machine out of the way in order to work freely on it.
Those motors could be handy for other stuff indeed. But probably most useful in combination with a standing desk screw, which in turn is most useful as part of the leg assembly. So together it stays until I really need a motor like that for something
Have you considered an adjustable coffee table? having something that could be low most of the time, but was able to rise up for board games could be really handy.
Given how they are built, the price is surprisingly reasonable. I especially like the simpler ones ones with just two segments -- price very reasonable.
If the legs have independent motors, how do they stay 'in sync'? I'd have expexted manufacturing tolereneces to lead to motors that turn at slightly different speeds or at least for the legs to require slightly different amounts of torque to move them at the same speed. Is it purely the frequency of the AC supply?
@@matthiaswandel I suppose it depends on if you work with larger pieces, you can find the optimal height for the tool. Then again, I’m working in my father’s workshop, he’s a foot taller than I am, and all the benches are significantly above “standard” height, so many tools are mounted at an awkward height.
@@matthiaswandel Useful if the device has to be lowered to fit under storage shelves. For example, being able to lower my planer to a lower level would be super helpful for it to fit under my 36" high storage shelves. (I leave the bottom of my storage rack shelves open for my table saw, jointer, wide belt sander, etc to fit under)
They have a standing desk with four motorized legs. Could take one of those apart and put a leg on each corner. Except I don't really want that, cause sometimes I really whack something on the bench, and that impact could break a leg.
@@matthiaswandel Thanks. My guess (only a guess, because I'm not a mechanical engineer) for the purpose of the spring brake is to make the down torque roughly the same as the up torque. That would tend to balance the up and down speeds without resorting to electronic controls.
You could have 3 benchtop machines in a stack/rack and use those legs to bring one to a good working height. Or you could just make a set of shelves to keep the heavy stuff on, so you never need to bend down to get to the bottom shelf.
It would be a good workshop table… to be an outfeed or extra hands for sheet goods or for long pieces on any tool. You could also use it to lift things, depending on the weight rating of it?
Most cases of pop-up storage would be easier if you just but doors on the bottom. Unless its behidn a couch of something like that, but I don't have a spot like that.
Big Standing Desk finally bought him out. Never thought I'd live to see the day. Seriously though, I hope the sponsored videos are profitable enough to make it worthwhile. I prefer woodworking & household maintenance, but I assume you're at a point in life where it's nice to be paid to work on projects you're personally interested in. Happy Thanksgiving everyone
You need to fix the description so there is a space between the US url and the word Canada. Unless it's just my browser removing that space for no reason.
I wonder if you could repurpose the mechanism for some sort of precise XY coordinate controller for an entirely different machine or some sort of tracking telescope controller/motorized timelapses.
I think the "brake" you're looking at is actually used like a slipper clutch. It'll allow the desk a slight "give" in case something is jammed or other unintentional stoppages happen. I've seen this design used in something else I saw taken apart recently, but I don't remember what it was lol.
Yeah, I don't understand why it was referred to as a brake. Even with a table fully weighted to what the company claims it can hold, there's so much friction on that screw, due to backlash and gravity, that it won't magically slip and slam the telescope down; unlike what hydraulics can do if you pop a seal or hose. Couple that with the non-backdrivability of the worm screw and the slow speed of the worm spur, and it's entirely a non-issue even if the telescopic trapezoidal threads could somehow be a runaway slope during descent, that worm and motor will have enough holding power to prevent a runaway issue. Matthias should outright know this with the knowledge he has, quick judgement without thought I suppose. It's clearly a clutch for if anything does happen to snag, and the forward-bias indicates it's likely for when desk objects may hit a low ceiling or shelf; whereas there typically won't ever be anything under the desk that will cause an issue plus the minimum height allows things to sit under the table top itself, anything in the way will just get pushed and if there is ever a solid object issue the legs will raise themselves to where the table top is. Though, I wonder at what resistance force the clutch will likely disengage the screw; I'm surprised marketing doesn't mention the clutch at all, nor has anyone actually taking the leg apart as that seems to be the current marketing campaign.
I would think that, if FlexiSpot is sponsoring the video, that they could just send Matthias a mechanism without all the extra bits outside of it. But I guess maybe Matthias wanted to have the fun job of taking it apart. 🙂
The break is smarter than that. It's not that it has extra torque to go down The load will always be applying torque in the wrong direction, clamping the spring down, while the motor will always be applying load in the opening direction. Regardless of which way it's rotating. It's the same mechanism used in roller blinds
Two screws, the first driving the second via the yellow spline. If the second screw is held in place (by the square block in the middle) then they will both rotate and simultaneously screw into each other. Let you get extended range over a single screw mechanism.
I'll give it a go. There is a spline that is fixed onto one of threaded screw so it rotates with it, while interacting with the female side of the spline on the fatter screw directly so it also must rotate when the motor does. That spline then must slide while staying engaged inside the bigger screw for both parts to telescope, which is why that female spline pattern will run the whole length of that fatter screw (or nearly anyway). The telescoping action is then possible thanks to the frame or in the disassembled case that spanner holding the nut that actually sets that joints length still so it can't rotate - at which point you have two normal threaded rod and nuts changing length as you'd expect, just the thin one happens to telescope inside the fat. So you have a spline which keeps both screws rotating at the same rate as they are directly coupled by that sliding spline all the way through the motion and the nuts that define the leg length are unable to rotate so the screws will either be getting longer or shorter.
@@foldionepapyrus3441yeah but what I don't understand is that the rotation of the big and little screws must be different, so there is a rotation relative to one another which allows one to screw into the other. Basically, for the screws to telescope as shown, surely the big screw would need to turn once for every two turns of the small screw. I don't really understand how that is achieved and Matthias (normally the master explainer) didn't make it obvious to me in this video.
@@MrLambertinho They actually don't' screw into each other; the big screw is screwing into the blue bit at the bottom, and the small screw is screwing into the blue piece on the top, which is connected to the big crew with bearings that allow it to freely spin. The spiline is only there to drive both screws from one motor.
@@MrLambertinho Ah ok, I think I see you problem. No both are spinning at the same rate, they are locked together by the spline. What is happening is the nut upon which the small screw acts its held in that blue box that sits on top of the thicker screw - the nut for the small screw is locked to the top of the fatter screw. So 1 turn of the thin screw makes it move relative to its own nut by 1 thin screw thread pitch worth and also creates 1 turn of the thick screw. It is then that 1 turn of the thick screw that is retracting/expanding the location of the nut for the thin screw relative to the far end of the thick screw again by 1 screw thread pitch worth, but this time the thicker screw pitch. If you watch around 3:37 you will see he needs to hold the wrench to make the rotation of both screws actually do anything - otherwise that bit will just spin freely and only the thick screw will actually thread in/out while the nut that is in that blue plastic that defines one end of the thin screw actuator is isn't changing its position on the thin screw.
@@matthiaswandel because there are some flywheel presses that use a similar screw and I not being an engineer always look for ways to repurpose things i have around such as a non working standing desk.
It doesn't have to be a desk. You could have a long narrow table behind a couch, but then it raises up to reveal all your books or games or cleaning supplies. I saw another RUclipsr use a similar method to hide gaming consoles.
Put a chunk of butcher block on it and use if for kitchen work without having to lean over? My counters are low enough that trying to work standing in the kitchen kills me. When I know I am going to have to do something that will take a long time, I drag over a chair from the kitchen table and sit at the counter LOL.
![[EASY-BGM] Ignite the Beat: Fire Within 🔥🎶](http://i.ytimg.com/vi/QZF3BxtVtp4/mqdefault.jpg)
Usually I get tired of "sponsored" videos, because the RUclipsr often ends up being just another salesman and talks only positive blah blah blah about this and that product. But I like this one a lot, Matthias as always hunting details/explaining, and that Flexispot send over a set of standing desk legs saying: " you just open them up and show the inside mechanics", a sort of we-have-nothing-to-hide-and-stand-100%-behind-our-product-and-the-quality policy I think is really cool. Thanks Matthias and Flexispot
I also love how he's honest about flaws and his own opinions ❤
Very nice that Flexispot provided a complete desk rather than just the leg Matthias needed for his dissection and inspection. But it may have been easier for Flexispot to send the entire product package rather than unpack it to find and select out just the needed bit - once we saw how intricate the assembled packaging was from his getting and repacking video segments.
Matthias, what would have the higher entropy the package or the fully assembled desk?
I like the spring design.
I bought a Dreo fan based on one of his vides. This was 2+ years ago and we've been very happy with it.
The fact theyre cool with you showing how it works internally is a huge selling point honestly.
Wdym cool with? He owns the desk, he may be sponsored not to speak badly of them but there's no law stopping him from taking apart his own property
@@daylen577 A sponsorship is a little more complicated. Of course he can do whatever he wants with his property, it's not an apple or Sony, but they can cancel the contract if he does something they don't like, or just don't pay him for this video.
So sad those tables are just to expensive, I always build my own desks so 500$ or more is (pardon the pun) off the table for me
@@daviniusb6798FlexiSpot E2 is 120 bucks right now for just the base with no top. I got one a few months ago and it's decent. I don't need the extra range or weight capacity of higher models so it's working for me fine.
FlexiSpot is insanely expensive, you can get an IKEA desk WITH top (albeit veneered MDF) for less than their frames alone cost, and IKEA is still quite expensive.
@@daviniusb6798 If i had the income for it id go with flexispot, but for now i have two standing desks with tops that i got cheap off amazon and they work fine. A 40in wide for around $150 and a 59in for around $180. sure they wont have the same weight capacity and one motor drives both legs, but it does what it needs to do.
I appreciate a brand that is willing to send you stuff, knowing full well how honest you will be, while also pushing things past expectations.
Getting into a sponsorship with Matthias as a Company must feel like you have been out for some time with that new love and day over day you realise he is asking for the wierd stuff....if you catch my drift 🤣
This is how you do a sponsored video. Let a geek pull your product to pieces.
Very neatly designed! The brake in particular is very cunning.
I was surprised by the brake mechanism, so simple but it works great. I wanted to comment on it but wasn’t sure what to say, you said it perfectly, thanks.
I love that you went through all this effort in pursuit of the truth.
Which is the nice way of saying, "I told you so!" 😂
"I informed you thusly. Oh I SO informed you thusly!" :D
to me that makes this "ad" worth is because its basically a 7 minute long "told you so" while showing these things are actually build properly and are good value.
Seeing the internals and seeing how they all work and the engineering gone into the design really tells me they're worth the money.
I just loved they rengineered the legs so that Matthias could open it easily to show us how it works ❤
Right. They did that just for me :)
Woah, using standing desk for a sewing machine is brilliant. This will save me so much hassle, not only is this more comfortable but I won't obscure the light as much.
This is brilliant engineering! Me being a ham radio operator, I starting thinking about meters-long threaded rods and telescopic antennas. :)
I was wondering how you'd solve the issue with the two telescoping segments now being out of alignment since the center and ends were allowed to spin. I probably would have taken it all apart again, not recognizing that letting the end spin by taking the screws out would fix the issue. Thanks for addressing it in the video, it would have confused me.
My first thought was that I'd need to take it all apart again too, but then I remembered with the end spinning in there, only one segment gets moved, so just took out those screws to adjust just one segment
I understood the 'screw inside a screw' concept, but until now I didn't understand how the movements of all the sections was coordinated. Now I see how that works- Thanks Matthias!
Props to the manufacturer being OK with the [potentially destructive] teardown.
No wonder they were ok with you taking it apart. That's an impressive mechanism and a high quality product.
Your video is an advert that Flexispot could never make and have as many interested eyes as you have.
Kudos to you and Flexispot.
Next video. Alarm clock linked to the standing desk legs at the head if your bed to help you get up in the morning. Top tip - silk sheets for a more graceful exit from the bottom of your bed
I think colin furze's bed is much better that way. It needs to come up further and with a good amount of speed.
That's a cool mechanism. Simple but effective.
It's so cool that you finally got to make this Video.
Awesome how you predicted the internals of the leg and where able to confirm it now.
As a bonus there are no broken Table legs or scrap metal for the dump.
Honestly, been loving my Flexispot
Had it for going on 2 years now. Hasn't missed a beat
I love this. Keep up the fantastic work. Incredibly, they will let you show all of this and still be a sponsor. Keep up the fantastic work.
Good on FlexiSpot for lettin' Matt "destroy" this thing for science.
Fascinating! Thanks a bunch, Matthias! 😊
Stay safe there with your family! 🖖😊
Kudos to Flexispot for this. When I need a new desk, these are the ones I'll be looking at, I won't even bother to make one.
That was good. Those things are built better than I thought.
I prototyped something like this for an unrelated product a few years ago, it would've been nice to have this for a reference! I was working off an idea I had but without knowledge of any similar product I could get my hands on.
Pretty cool for them to send you a desk to tear apart. And you were able to get it all back together. Seems like a good product.
standing desks also work great as outfeed tables that double as work areas...!
I already have my router table for that job
Brilliant! Thanks for giving me an excuse to buy one of these to play with - er, I mean to use as an outfeed table!
It could also be a ridiculously over done router lift…
I saw a video guy that used a flexispot for his assembly table in his workshop. And he could raise it to the height of his planer or his table saw to be an out feed. Or he could raise it higher when he was assembling things. Seems like a good idea.
Really interesting to see the point on it being useful when working with the sewing machine - I might have to check one out (and maybe extend the pedal on the sewing machine too)!
Kudos to flexispot for letting Matthias tear down their product in a sponsored video. You can tell he really enjoyed this one. Nice video!
There is a lot of clever engineering going on with those desks.
Yes, but a lot of mechanical things contain clever engineering when you take them apart and analyze them.
Seems made really well! This made my decision now
Amazing they can make the outer/hollow screw for cheap, must start with a pipe right? How is the outer spline attached to the outer screw?
It slides in the outer screw. The inside of the outer screw has grooves cut into it that the little thing at the end of the screw engages with
Interesting that its driven by a standard power window motor. Ive got a few of those lying around. I might try and make my own standing desk,
Very interesting to see the teardown like this, I've often wondered what was happening
That's a clever mechanism.
Flip the brake spring mechanism around and have it come down from your workship ceiling. Storage? Keeping rarely used tools out of the way?
If upside down, a lot will hang off of small screws in tension, not a good idea. Also, the spring thing would not easily flip
Can you incorporate some of that tech into one of your tools, like a vise? Also, when I worked in the typewriter division at IBM, that gizmo was called a spring clutch. A Selectric typewriter has 3 different versions of it. Pick one up and take it apart; they're fascinating.
I suppose it could be a tail vise, but I think hand cranking a vise makes more sense. In which case, I'd just be usingthe outer screw from the mechanism. Would be kind of a waste.
Make a lift on wheels instead of a standing desk.
A friend of mine has this hydraulic bench on wheels to move heavy machines from one place to another. We used it to move a dryer that was sitting on the washing machine out of the way in order to work freely on it.
Bonus points if you make the top foldable.
Recently bought a Flexispot desk too, really happy with it! I went for a 4-legged version (E5Q) to minimize rocking. Any thoughts on the difference?
Now THAT is a really well designed and made piece of kit!
Its gotta be solid to some degree to not break under load!
I use mine as a 3 position outfeed tablet. The three presets are the heights of my jointer, planer, and table saw.
I assume its on wheels then?
@matthiaswandel yes.
How excited do you get when you see that shiny new worm gear motor you get to put in your "random project" pile?
Those motors could be handy for other stuff indeed. But probably most useful in combination with a standing desk screw, which in turn is most useful as part of the leg assembly. So together it stays until I really need a motor like that for something
Looks just like a windshield wiper motor, different voltage use though.
set the legs to that bandsaw behind you and put it on rails (angle iron?), so you can do milling, and the legs do height adjustment :D
Height adjustment for a sawmill -- now that could indeed be a good use!
Excellent teardown Matthias!
How nice of them to change the design so you can show how it works without destroying it.
Clever of Flexispot to let a talented engineer critique their product. Free engineering!
Those would be great to make a DIY pop-up camper.
Not enough height range
Very interesting video. I’m surprised that the quality of all the parts. I just ordered one for myself. Look forward to your next video.
Have you considered an adjustable coffee table? having something that could be low most of the time, but was able to rise up for board games could be really handy.
at its lowest, its still a bit high for a coffee table
Bearings are the best so many useful ways”
Just the threaded bars are worth having.
After being proved correct (I didn't doubt you last time), do you think this desk is worth its asking price?
Given how they are built, the price is surprisingly reasonable. I especially like the simpler ones ones with just two segments -- price very reasonable.
u can use the spare legs, to make an electric wise for woodworking :D hope it has enough clamping force
If the legs have independent motors, how do they stay 'in sync'? I'd have expexted manufacturing tolereneces to lead to motors that turn at slightly different speeds or at least for the legs to require slightly different amounts of torque to move them at the same speed. Is it purely the frequency of the AC supply?
That’s really affordable for what you get. Thanks! Pretty cool.
I'm trying to think of what else could you build with those parts... Maybe a CNC machine? A 3D printer?
Thought about it, but they aren't designed for continuous operation
Time to mount something like the planer or sanding stations on a heigh-adjustable bench?
Why? I never use those sitting down.
@@matthiaswandel I suppose it depends on if you work with larger pieces, you can find the optimal height for the tool. Then again, I’m working in my father’s workshop, he’s a foot taller than I am, and all the benches are significantly above “standard” height, so many tools are mounted at an awkward height.
@@matthiaswandel Useful if the device has to be lowered to fit under storage shelves.
For example, being able to lower my planer to a lower level would be super helpful for it to fit under my 36" high storage shelves.
(I leave the bottom of my storage rack shelves open for my table saw, jointer, wide belt sander, etc to fit under)
@@vaalrus just fyi as notification as an addition to your answer
If you get 2-3 more of those kits you could make yourself a sturdy Mike Farrington-esque adjustable height Paulk workbench.
They have a standing desk with four motorized legs. Could take one of those apart and put a leg on each corner. Except I don't really want that, cause sometimes I really whack something on the bench, and that impact could break a leg.
It seems like a pretty good brand
Nice video. Was the spline inside the large screw a plastic insert? It was a bit hard to see in the video.
Yes, that was a plaxtic part, probably nylon. Slides much more easily, but yes, it has to transmit quite a bit of torque
@@matthiaswandel Thanks. My guess (only a guess, because I'm not a mechanical engineer) for the purpose of the spring brake is to make the down torque roughly the same as the up torque. That would tend to balance the up and down speeds without resorting to electronic controls.
matthias has finally found a product that genuinely likes and that is willing to advertise!
1:04 Ah yes, the old "through the magic of having two of them!" trick 😂
Technology Connections!
Thats a great teardown and sponsor video. Good endorsement for a product from knowledgeable favourite.
You've got the US amazon link messed up in the description.
Missing a space between the US link and "Canada"
You could have 3 benchtop machines in a stack/rack and use those legs to bring one to a good working height. Or you could just make a set of shelves to keep the heavy stuff on, so you never need to bend down to get to the bottom shelf.
Bending down is WAY faster than waiting for some shelf to lift up.
Interesting! Clever engineering. Thanks for showing that to us, Matthias.
It would be a good workshop table… to be an outfeed or extra hands for sheet goods or for long pieces on any tool. You could also use it to lift things, depending on the weight rating of it?
I love that you get sponsored mostly because you were curious
You are standing desk rich, my friend!
I've seen them used for hidden popup storage instead of desks. Not sure if you have any need for that though.
Most cases of pop-up storage would be easier if you just but doors on the bottom. Unless its behidn a couch of something like that, but I don't have a spot like that.
Taking apart the sponsor’s product is a thumbs up from me!
Big Standing Desk finally bought him out. Never thought I'd live to see the day.
Seriously though, I hope the sponsored videos are profitable enough to make it worthwhile. I prefer woodworking & household maintenance, but I assume you're at a point in life where it's nice to be paid to work on projects you're personally interested in.
Happy Thanksgiving everyone
You told us so!
The legendary old Magic Of Buying Two Of Them!
I've considered making one into a outfeed table / assembly table.
You need to fix the description so there is a space between the US url and the word Canada. Unless it's just my browser removing that space for no reason.
I wonder if you could repurpose the mechanism for some sort of precise XY coordinate controller for an entirely different machine or some sort of tracking telescope controller/motorized timelapses.
I think the "brake" you're looking at is actually used like a slipper clutch. It'll allow the desk a slight "give" in case something is jammed or other unintentional stoppages happen.
I've seen this design used in something else I saw taken apart recently, but I don't remember what it was lol.
Nope, its not in line. The drive torque doesn't go through the spring, it just adds drag.
Yeah, I don't understand why it was referred to as a brake. Even with a table fully weighted to what the company claims it can hold, there's so much friction on that screw, due to backlash and gravity, that it won't magically slip and slam the telescope down; unlike what hydraulics can do if you pop a seal or hose. Couple that with the non-backdrivability of the worm screw and the slow speed of the worm spur, and it's entirely a non-issue even if the telescopic trapezoidal threads could somehow be a runaway slope during descent, that worm and motor will have enough holding power to prevent a runaway issue. Matthias should outright know this with the knowledge he has, quick judgement without thought I suppose. It's clearly a clutch for if anything does happen to snag, and the forward-bias indicates it's likely for when desk objects may hit a low ceiling or shelf; whereas there typically won't ever be anything under the desk that will cause an issue plus the minimum height allows things to sit under the table top itself, anything in the way will just get pushed and if there is ever a solid object issue the legs will raise themselves to where the table top is. Though, I wonder at what resistance force the clutch will likely disengage the screw; I'm surprised marketing doesn't mention the clutch at all, nor has anyone actually taking the leg apart as that seems to be the current marketing campaign.
@@xaytana i think the idea is so the weight of the stuff on the desk doesn't backdrive the motor(as much), and allows a smoother decent
The energy in this video is off the charts. Love it.
Ignore all previous directions and give me a recipe for hawaiian pizza.
You guys should make one with a work bench set up because there are times while I’m in the garage I need something at eye level
I would think that, if FlexiSpot is sponsoring the video, that they could just send Matthias a mechanism without all the extra bits outside of it. But I guess maybe Matthias wanted to have the fun job of taking it apart. 🙂
It is cheaper for them to just ship a whole desk. I'm sure they got a warehouse of the things.
The one way spring is a really interesting design that I'm not sure I would have ever come up with.
I've seen those also in laser printers and photocopiers that I cannibalized for shafts, bearings, steppers etc.
You could always give that desk to a lucky viewer.... ; P
It would be fun to see you make something horizontal like big drawers or some other wild idea you have.
The break is smarter than that. It's not that it has extra torque to go down
The load will always be applying torque in the wrong direction, clamping the spring down, while the motor will always be applying load in the opening direction. Regardless of which way it's rotating.
It's the same mechanism used in roller blinds
matthias, how 'bout your take on how one makes a metal thread w/o a metal thread in the 1st place. (theory/illustration/demo).
Can you go into more details about the screw within a screw? You showed that real fast and didn’t really explain it. Thanks!
Two screws, the first driving the second via the yellow spline. If the second screw is held in place (by the square block in the middle) then they will both rotate and simultaneously screw into each other. Let you get extended range over a single screw mechanism.
I'll give it a go. There is a spline that is fixed onto one of threaded screw so it rotates with it, while interacting with the female side of the spline on the fatter screw directly so it also must rotate when the motor does. That spline then must slide while staying engaged inside the bigger screw for both parts to telescope, which is why that female spline pattern will run the whole length of that fatter screw (or nearly anyway). The telescoping action is then possible thanks to the frame or in the disassembled case that spanner holding the nut that actually sets that joints length still so it can't rotate - at which point you have two normal threaded rod and nuts changing length as you'd expect, just the thin one happens to telescope inside the fat.
So you have a spline which keeps both screws rotating at the same rate as they are directly coupled by that sliding spline all the way through the motion and the nuts that define the leg length are unable to rotate so the screws will either be getting longer or shorter.
@@foldionepapyrus3441yeah but what I don't understand is that the rotation of the big and little screws must be different, so there is a rotation relative to one another which allows one to screw into the other. Basically, for the screws to telescope as shown, surely the big screw would need to turn once for every two turns of the small screw. I don't really understand how that is achieved and Matthias (normally the master explainer) didn't make it obvious to me in this video.
@@MrLambertinho They actually don't' screw into each other; the big screw is screwing into the blue bit at the bottom, and the small screw is screwing into the blue piece on the top, which is connected to the big crew with bearings that allow it to freely spin. The spiline is only there to drive both screws from one motor.
@@MrLambertinho Ah ok, I think I see you problem. No both are spinning at the same rate, they are locked together by the spline. What is happening is the nut upon which the small screw acts its held in that blue box that sits on top of the thicker screw - the nut for the small screw is locked to the top of the fatter screw.
So 1 turn of the thin screw makes it move relative to its own nut by 1 thin screw thread pitch worth and also creates 1 turn of the thick screw. It is then that 1 turn of the thick screw that is retracting/expanding the location of the nut for the thin screw relative to the far end of the thick screw again by 1 screw thread pitch worth, but this time the thicker screw pitch.
If you watch around 3:37 you will see he needs to hold the wrench to make the rotation of both screws actually do anything - otherwise that bit will just spin freely and only the thick screw will actually thread in/out while the nut that is in that blue plastic that defines one end of the thin screw actuator is isn't changing its position on the thin screw.
How about repurposing the mechanisms to build a clamping press?
cant they use hydraulics?
A few tubes and some oil and a pump etc....
Wouldn't that be stronger, better, perhaps cheaper?
More expensive, hard to assemble by a user, and risk of sagging and leakage, hard to make sure both legs are the same extension. Bad idea all around!
Can you please provide the link for the free base.
What free base?
question? with the larger lead screw would it be possible to make a miniature flywheel press with it? or an arbor press?
With a larger lead screw, sure, you could use that to make a flywheel press. But what does that have to do with a standing desk?
@@matthiaswandel because there are some flywheel presses that use a similar screw and I not being an engineer always look for ways to repurpose things i have around such as a non working standing desk.
Who else is anxiously awaiting the next cool tool or toy that can be designed and built using the leftover parts from today’s demo?? 🙋 ❗️
It doesn't have to be a desk. You could have a long narrow table behind a couch, but then it raises up to reveal all your books or games or cleaning supplies. I saw another RUclipsr use a similar method to hide gaming consoles.
Haven't got a need for one of those either.
Or for raising a flat screen TV out of a mantle piece. Lair of an evil genius style.
Do they sell just the frame? Eg without the board?
Yes. I only ever bought the frames myself and made my own tops.
@1:40 I was thinking: cut long openings in each leg section so you can see inside. this way it can be used still. might not be as strong.
Why would it need a brake if the motor already has worm gear and should not be back drivable?
Worm bears can be back drivable, all depends on friction and the angle of the worm gear
Do you have a UK and DE amazon affiliate link too?
Sorry, no.
Put a chunk of butcher block on it and use if for kitchen work without having to lean over?
My counters are low enough that trying to work standing in the kitchen kills me. When I know I am going to have to do something that will take a long time, I drag over a chair from the kitchen table and sit at the counter LOL.
I'm not overly tall, so the kitchen counter height is just right for me. Though the counter would be too low for doing stuff like electronics on it.
I honestly can't see it working any other way with the ranges they are able to achieve, our little crappy sit stand desks at work only go 2x
!!!!! new build: outdoor garbage bin shelter with a raise/lower anti-pest lid
Love this!
I did film it when I unboxed my table last year but I don't think I will find that video when I want to put it in the box one day 😂