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The Potting Shed Workshop
Великобритания
Добавлен 24 окт 2014
Machining an Anvil Clamp for a Uni-Mike
I bought a Mitutoyo 117-107 Uni-Mike cheap - it had parts missing. In this video I machine some replacements using best guesses to determine dimensions to make this into a useful measuring tool.
Просмотров: 1 721
Видео
Taylor Hobson Thread Chasing Lathe Part 1
Просмотров 3,2 тыс.21 день назад
This is an introduction to the lathe that I've been restoring on and off for the last 4 years. It's the only example of this lathe I've been able to find anywhere so what's presented here is the result of a lot of trial, error and detective work. The lathe is very much work in progress but this video gives a glimpse of what it's capable of. It is pre-CNC automation at it's finest!
Sharpening the Lead on a Reamer
Просмотров 2,5 тыс.Месяц назад
In this video I show how to use the Union Tool and Cutter Grinder to put a lead on the end of a reamer
Mounting a Diamond Cup Wheel on the Union Tool and Cutter Grinder
Просмотров 1,3 тыс.Месяц назад
A low cost electro-coated diamond cup wheel is mounted onto my Union Tool and Cutter Grinder. The spindle on this machine is not completely straight and the wheel cannot be dressed, so in this video I attempt to get the wheel mounted and running true.
Endmill Sharpening Part 2
Просмотров 2,3 тыс.Месяц назад
In this second part on sharpening endmills on the Union Tool and Cutter Grinder I sharpen the end cutting faces of 2 and 4 flute endmills.
Elliott 10M Shaper Gear Cutting Fixture Part 5
Просмотров 28 тыс.2 месяца назад
In this final part of the series on the gear cutting attachment I cut two helical gears, one in bronze and one in steel. The finished gears are then mounted in the mill to measure the ideal axis spacing for smooth engagement. The measurement technique was devised by Tom's Rabbit Hole: www.youtube.com/@thomasstover6272
Elliott 10M Shaper Gear Cutting Fixture Part 4
Просмотров 4,5 тыс.2 месяца назад
Continuing the series on the gear cutting attachment for the Elliott 10M shaper, in this episode I go through the setup required and prepare to cut a gear
Elliott 10M Shaper Gear Cutting Fixture Part 3
Просмотров 13 тыс.2 месяца назад
This is the third part in the series on the gear cutting attachment for the Elliott 10M shaper. In this part I configure the shaper to cut a 20 tooth, 12DP spur gear and cut the gear.
Elliott 10M Shaper Gear Cutting Fixture Part 2
Просмотров 6 тыс.2 месяца назад
In this part I go through a little more detail on the overall system, machine a blank for the gear and modify the cutting tool that will be used to shape the gear. This is my first try at machining on camera in a proper video, so please let me know in the comments if there are things I could have done better.
Elliott 10M Shaper Gear Cutting Fixture Part 1
Просмотров 35 тыс.3 месяца назад
An in-depth description of the involute gear cutting attachment that I made for my Elliott 10M shaper
Cutting a helical gear on an Elliott 10M shaper
Просмотров 9 тыс.Год назад
First tests of a bolt on attachment for cutting helical gear teeth on a 10-inch shaper
I have never seen this technique before! Thank you for sharing.
Very nice work sir. I like it when a tool can be saved and get used again.
Nice job on a rare tool build. We shared this video on our homemade tool forum last week 😎
Have you considered instead of using a serpentine belt, using a coged belt with the driving pulley wide enough to allow the belt to walk back and forth with the headstock?
Fascinating.
Thank you. It seems to be a bit of a unique beast now.
That's a nice machine. Thanks for the lesson.
Thanks. The grinder is just the right size for my workshop. It's one of the machines I wouldn't be without now.
@@ThePottingShedWorkshop I don't have a T&C grinder but so I've no practical experience but that one looks nicer (more refined) than the Clarkson. Cheers
Very good job.
Thanks!
Beautiful work,beautiful equipment,Robert.I got that mike.Thank you.
Thank you. I guess if you've got one of these you'll see I didn't get all of the details of the clamp right, no spring and no shoulders to capture the flat anvil, but I was going on guesswork and after I'd finished I watched the Joe Pie video again and saw what I'd missed first time around!
Well, that's a nice little job. I think the 90-degree groove proves the old adage, that the setup takes a lot longer than the machining on a mill. Quite a handy little mill as well. Must be nice to have the tool and cutter grinder as well, to keep the tooling in top condition.
Thank you. The missing parts made the uni-mike affordable. I doubt I'll wear it out! The mill is the perfect size for my workshop. I acquired the TC grinder specifically for sharpening the horizontal milling cutters which are cheap second hand. It seems to have been even more useful than I would have imagined.
@@ThePottingShedWorkshop Yes I got a whole load of horizontal cutters for my universal mill at auction along with indexible inserts and normal vertical milling bits. I think there was £2k's worth at least at full prices for £100. I just need the cutter grinder to sort them all out. And then buy the tooling to fit the inserts. 🤔
Another great video. Thank you. 👍🇳🇱
Thank you! I wasn't going to film it, but wouldn't have had enough time this week to generate any material for a video had I not.
Nice work Robert. One trick I was shown by a Toolmaker for using the tailstock die holder on shorter thread lengths is to retract the cross slide so the die holder handle can rest on the top of the the tool post ( no tool holder fitted] the saddle is positioned so the handle is towards the tailstock end of the toolpost so as the cut advances it doesn’t fall of the headstock end of the tool post block. If the pitch is one I can select from the gearbox I’ll often screw cut then finish with the die holder. I understand the Hemingway die holder is a pleasure to use, it’s on my very long list …. . I was a little concerned that your part would move on your mag chuck being what looks like a standard rather than a fine pole, I wouldn’t trust mine and use additional blocking, I can still not understand why Dronsfield chose clockwise rotation for the Eagle rather than anticlockwise which seems to be the case for all other SG’s I have seen.
My tailstock die holder is one I made years ago when all I had was a minilathe, hence the stubby handle. I don't have a vast selection of dies and most of the metric ones I have aren't split. I also quite often single point critical threads then finish with a die, especially if they're fairly big (thats 1/2" and upwards for me!). As for the small part on the mag chuck, I tried several locations and gave it a good tug test before grinding and was careful to only take light cuts, a thou maximum. The spindle nut is RH, I guess due to the direction of rotation at startup. Granted they could have reversed everything. Its a 3 ph motor run on a VFD and I have a 20sec ramp up and down time to avoid shocking the wheel.
I’m not a fan of the non split dies but we have to work with what we have. Regarding the Eagle there would have been no cost difference to have made it rotate conventionally at the design stage. I am tempted to make a new spindle for mine with a LH nut so I can do this provided I don’t find any other serious issues when I restore it. A grinder hand advised me to hand rotate a spindle that has been sat for more that a few days to ensure some lubrication is on all of the contact faces before running it up, this is probably more important on an oil lubricated spindle, I can’t recall right now if the Eagle is intended to be greased.I too have my working SG on a slow ramp up. Mag chuck ages it looks like you have a good one. Looking forward to your next vid.
Very nice plan , good workmanship , you have a good set up, all the right equipment.
Thank you. I've been buying the machines as I find them and I give each one a complete overhaul.
this is a well done repair!!what kind of mill do you have? like the re purpose of the little drill chuck. impressive looking slab mill. lots of traffic,, main rd?? cheers.👍👍
Thanks! It's an Elliott model 00. It's smaller than a Bridgeport but big enough to be useful. The slab mill is a great cutter, the helical teeth cause less "hammer" on the workpiece than a straight toothed cutter. Depth of cut is limiter by the single overarm support bar though. Take a deep cut and you can see the 3 inch solid bar bending! Then it chatters horribly. Yes, I had the doors open for this video. Dual carriageway not far away.
Nice. That will work just fine. I just don't understand how people can loose those anvils. It's like loosing the seats of your car. It doesn't make any sense.
Thanks. I agree with you about losing the accessories. However the mic can be used as a depth mic without them so maybe thats what happened and they got lost in the junk.
Very nice work! Phil
Thanks!
Very interesting, nice job getting missing parts made and working well. Thanks for great video again
Thanks! I was offered something very similar back 30 years ago for $250, but would have needed a trailer, bigger truck, and friends just to obtain it. I'm more interested in the head stock arrangement, have any pictures of the underside of the head stock and where it mates? The tripping mechanisms remind me of my planer that was converted to hydraulics, I need to change it to electric as at times it bounces and continue going the original direction, have to watch it constantly for that rare occasion.
Shame you didnt get that machine. I would have been very interested in the drivetrain. It looks like I'll probably have enough topics to cover in a follow up video on this lathe. I have a bunch of still photos too from where I stripped it down, so I can add them in too.
@@ThePottingShedWorkshop Cool, thanks. I'm in one of those situations where one has to build the machine to make the machine that makes the machine. Yeah, I almost blindly bought it, knowing it would be difficult. The guy was super nice, owned a huge machine shop, he was showing me around and he had these two story high presses, maybe six of them, he said he bought just so they wouldn't be potentially competing. The screw machine was very similar to the picture shown originally, approx. 6'x6'x5', looked awfully heavy, but the learning and no need for a hardware store. Now, would be the time to have one, just the other day I bought a couple of small set screws and the cashier misspoke and said $73.10 instead of $7.31 and I told her, Boy Howdy, we are in the future!
Excellent quality, would it not have been better to tension the belt on the out. This would allow the belt to contact more of the circumference of driving pulley. Or move the pulley mechanism with headstock and keep constant tension.
I considered it but there's not a lot of clearance beneath the belt as the camshaft motor is under there. As for moving the pulley mechanism with the headstock, I considered that too but it just moves the problem onto the next belt.
Know what you mean, great job nonetheless
That is one cool machine..thanks for sharing
Thanks. Yes, it's a bit different. I thought I'd share it for posterity if nothing else. There can't be many (any?) others in existence now.
Thabks for the video! I have read and heard that thread chasing lathes exist but I hadnever seen one or really understood what they were!
Woah... there's just so many things on that lathe that I've never seen the like of before! Might be nice to have some means of locking the head stock for when you're doing normal turning, not threading??????
Yes, it just might be the only example left. It would be criminal to scrap it, hence the efforts I've put in to get it going. I can't disagree with you over the headstock lock. Its possible I've missed something as I seem to learn a bit more about it every time I work on it.
that is a very neat machine, Ive never seen one before, excellent overview thank you
Thanks! I don't think anyone has seen one before, and if they have, I'd love to meet them and learn more about it!
An amazing machine.
Isn't it just! I just wish I had more info on it. It's not serial number 001, so other examples must have existed once, but it seems, based on my internet searches, to be the only one still going. Unless you know different😁!
@@ThePottingShedWorkshop Hi again, unfortunately I have never seen the likes of your machine. Hopefully you will find another one or two still lurking out there somewhere. Good luck.
Thanks Robert a testament to pre CNC ingenuity and well done for getting it operating. Solves the problem of pitch error on an engine lathe as the thread master governs this. I expect you have seen Steve Watkins’s Hardinge “Bob” that also uses thread masters although I don’t think he’s ever used that function. Would be interested to know how many masters you have to go with it perhaps that’s in your upcoming videos.?
Thank you! It has tested my perseverance I'll admit. I've come close to giving up following a number of failed attempts to get it running. As for how many threading masters it came with.... absolutely none! All disappeared long before I acquired it. The 20tpi hob and follower were made by me. I will probably repeat making one on camera soon (previous one was before I started this channel seriously) as the follower is an interesting setup.
Fascinating machine - thanks for sharing👍
Thanks. I thought this might be a bit different to the usual offerings on youtube!
Very cool machine. Great solution for the drive; I hope you get a chance to compare to the original mechanism so you can compare and contrast your approach.
Thank you. The drive train is half bodge, half necessity to get it to function. As for finding how it was done originally, I think the drive belts were much longer. I do have an original intermediate pulley with a swivel mount, but it needs a really deep front to back depth to work and I wanted something far more compact. There is no info on the web anywhere I could find. Google it and all you'll find is a posting on mig-welding.co.uk, by... uh, me!
yes , i found it interesting! what a fantastic little piece of machinery, almost like a turret lathe in a roundabout sort of way.
Glad you liked it, thanks! Yes, it's a bit different. I wish I could find more info on it.
That's a nice toy to play with. Looks like a lot of fun.
Thanks Michel. I've been playing with this, on and off, for 4 years to get it functioning!
Another fascinating video. Thank you Robert 👍
Beautiful work Robert!
Thank you very much!
You have some magnificent machines. That really is a genius mechanism!
Thank you! I'm still not sure what I'll do with it when (if) it ever gets finished. It is indeed an ingenious mechanism. I hate the slipping clutch though, it just seems a bit of an afterthough as its just a spring washer bearing on a small area of the end of a hardened shaft.
Looks like a revised version of the holtzapffel ornamental turning lathes with screw cutting function the spindle slid forward following a precut thread and nut. I wander how many lenses housings and fine threads this type of machine made and how often it was cutting bsb threads. Have you considered trying ornamental turning with it? T.D. Walshaw wrote an okay book on the subject more history than practical examples
Funnily enough, I bought the lathe off a chap who had a garage full of ornamental lathes. I think he was the president of a society dedicated to such things. I never got into ornamental turning, although to my surprise I have a copy of that book!
@@ThePottingShedWorkshop makes sense thats a clever piece of equipment that wouldn't be out of place in an ornamental turners collection. I want to do some decorative metal work along the lines of that but am probably going to do a it with an spirograph set and a pantograph engraver. Is it a project machine for you or are you looking to use it in a production capacity to produce parts?
@@ambisinisterengineering5242 I bought it a month or so into lockdown in 2020. It was intended to be something interesting to do whilst we couldnt do anything else. I'll get it finished then use it very rarely I suspect, unless someone wants hundreds of bespoke brass screws making!
There are illegal substances that are less addictive than these videos Robert. Thank you!
I'm still amazed that people like these videos! Amazed, but very pleased. Thank you!
@@ThePottingShedWorkshop You are an excellent expainer of machine work without a load of bull that is often on other machining videos. Mechanical understanding is vastly under rated.As a home machinist with pretensions of adequacy it's easy to follow along with enough information to say why,not only how. Thankyou for sharing this with us!
Excellent work,Robert.Thank you for posting.
Thank you! It's taken me over 4 years to get it running as the enthusiasm wanes at times.
Well it's certainly an unusual little lathe. I guess it would be very handy for the model engineer to turn all those small oddball screws they like to use.
Well it's certainly an unusual little lathe. I guess it would be very handy for the model engineer to turn all those small oddball screws they like to use.
Thats the only sort of use I could come up with for it! I guess I'd better make a 40tpi hob and follower for ME threads then!
Excellent video! Where did you get that Tool and Cutter grinder poster behind you in the wall during your intro? Looks awesome. Thank you!
Glad you liked the video, thanks for watching and commenting. The poster was advertised for sale on homeworkshop.org.uk. I spotted what it was and didn't hesitate! It brings a bit of colour into what would otherwise be a bit of a black, white and shades of grey workshop.
Thanks, great video. 👍
You're welcome. Thanks for watching!
I am a new subscriber and viewer of your channel and so far, i have learned some great methods and got a refresher on Trig, Thanks for sharing.
I should have paid more attention in math class at school. I need a complete re-teach on Sin Cos and Tan 😂 Thank you for posting!
SOHCAHTOA was the aide memoire we were taught. No complicated trig involved here fortunately. Thanks for watching!
@@ThePottingShedWorkshop we didn't have that SOHCAHTOA in Africa!
@@Jan_Raap Sine = Opposite / Hypotenuse, Cosine = Adjacent / Hypotenuse, Tangent = Opposite / Adjacent. I guess the names change in Afrikaans or whatever so the acronym doesnt work.
Very nice presentation. I've seen several other explanations of this procedure but yours is by far the most clear and complete. Well done. Thank you.
Thank you very much. I have been accused of being a bit like a school teacher, but if you want the ins and outs of "how to", thats how I'll appear unfortunately😁
Thanks Robert, I really like to see a complete round down on your Union all it’s accessories and the ones you had to make for it. Looking forward to seeing more about your esoteric lathe.
I was going to do that on the first video on the TC grinder, but it got a bit unwieldy. I'll try and fit that in in the near future.
@@ThePottingShedWorkshop I can imagine there’s a lot to cover, maybe you could just explain the relevant parts and if you made them that relate to the job you are filming. Don’t take this as criticism it just a suggestion I like your presentation style & content and you are helping me to understand the nuances of tool grinding. II seem to have a penchant for small T&C grinders first the Stent which isn’t completed but bears the closest resemblance to your Union, then the Kennet which I have restored and is serving me well with more accessories to make and last week I picked up a Worden at a bargain price that needs work.
Most appreciated. Thanks for your time & effort in showing this, There's bugger all info on t&c grinders, I'm keen to learn more to apply to mine, Man, they can be a black hole for time spent making accessories & learning the geometry.
You're welcome. I've spent quite a lot of time making fixtures and having a good grounding in trigonometry makes life easier. I've resisted showing some sharpening like drills as its easy to put a basic shape on the end but I've been trying to split the point too and my results arent consistent enough yet. If you have a horizontal mill a TC grinder is a must. Used cutters are cheap and easy to sharpen. I'll cover those in a future video.
Trig Rules! Question: I did a 3D sketch in SOLIDWORKS of your pie shape to help me better understand the math. What I think you're explaining is how calculate how far the cutter must DROP below it's centerline to give the correct clearance. Imagine sharpening the flutes of a 1" endmill. If R was radius .500" , and THETA was 0 degrees then the side opposite angle BETA would be the vertical drop distance between the cutting edge and the center of the cutter. This DROP DISTANCE would give you the 7 degree clearance. My model shows that a 7 degree clearance angle on a 1" cutter would require a .061" drop......am I following you correctly? My KOLEE book gives formula for Drop = .0087 x Desired Clearance Angle x Cutter Diameter. This is only true if the grinder table isn't rotated from 0 degrees. I can't explain what happens when the table is rotated?????......Thank you for teaching me!
Not quite. The angle gauge gives a (relatively) precise rotation which, without the table being rotated, gives the clearance angle. As the table is rotated the clearance angle you grind changes - at 90deg there is no clearance! That was what my garbled explanation was trying to convey. Without the angle gauge you are right that you would need to calculate the drop to work out the clearance, but the jigs I have avoid me having to do that. Thanks for commenting. I thought a bit of trig would put viewers off!
@@ThePottingShedWorkshop So rotating your ANGLE GAGE is causing the cutting edge to DROP the proper vertical distance. But this DROP distance needs to increase as the table is rotated to achieve the 7 degrees of clearance. As you stated, at 90 degree's table rotation, turning the ANGLE GAGE wouldn't do anything. It's clear as mud! Have a wonderful day!
Очень ценный и подробный урок по заточке концевых фрез. Я подписался и в дальнейшем буду просматривать ваш канал. Спасибо!
Thank you!
that was a good vid!!!
Thank you! I wasnt sure TBH, but it seems to have been received positively.
Clack of that support blade is close to perfect. Why 45° lead ? Wouldn't a shallower one ensure better centering? Dunno what your project is though so 45 may have a bearing (pff) on that Going to have to go back to basics re trig 😔
Yeah, its a satisfying click! The reamer runs in the mill spindle and as I didnt have a 39/64 drill for the 5/8 reamer the starter hole was bored out with a boring head. The application was for a belt tensioner on the lathe I'll describe next week, not critical but the reamer makes a good result easier for the design I chose. As for the 45deg angle, I copied a commercially ground reamer! Thanks for commenting!
The center of the bore is dictated more by the initial hole that the reamer will try to follow. If you want a hole to be in a certain location by reaming, you need a jig bore reamer that doesn't have the 45 degree end on it.
Very interesting explanation,Very interesting machines and very interesting set up.Thank you.
Glad you enjoyed it!
Just watched both videos. It looked very complicated and involved. So once you're stuck into a few, and in a rhythm , how long to do a two flute cutter?
Setup is the time consuming part. Once everything is up and running 5 to 10 minutes to clean up the flutes as long as theyre not too bad (ie. not badly chipped, just dull). Cleaning up the ends would take a similar time, unless you're grinding it right back and starting again on the geometry. Thanks for watching!
I mounted one of these cup wheels onto a cutter grinder I made and went through a similar process but in the end found the bore was causing most of the runout. After boring it out and remaking a mounting washer it is still not perfect but considerably better than it was.
That's very interesting, thanks. Maybe I will bore it out and try again with a new bush turned in situ.