Homemade Drum/ Thickness Sander

Поделиться
HTML-код
  • Опубликовано: 14 мар 2015
  • In this video I make a drum/ thickness sander.
    It turned out fairly well and so far i've had no (big) problems with it.
    Specs are:
    Max Stock Width - 392mm
    Max Stock Height - 45mm (limited by the motor getting in the way)
    Drum Diameter - 125mm
    Drum RPM - 1400
    Table Length (between rollers) - 550mm
    Those are about all the bogus stats I can think of to make this description sound professional.
    If you were to build one yourself there's really nothing stopping you from making it bigger (or smaller) if needed. The limiting factor would probably be the sanding belts (for the conveyor) that you can get ahold of.
    There's a Sketchup model available for download here:
    drive.google.com/file/d/0B1DQ...
    There's also a goofy circuit diagram included for the PWM speed controller.
    Also I got alot of questions about where I got the sanding belts for the conveyor, so here's a link.
    www.axminster.co.uk/sanding-be...
    Also, a special thanks for the folk on Madmodder (it's a forum). Especially Bluechip/ Dave for helping with the electronics. And Rob Wilson for giving me the V belts.
  • ХоббиХобби

Комментарии • 235

  • @BSMikkel
    @BSMikkel 7 лет назад +9

    "...this was trimmed flush with my hand crafted japanese pull saw..". Love those understated comments of yours. :)

  • @longshot789
    @longshot789 8 лет назад +28

    "Handcrafted Japanese pull saw" RIGHTEOUS

  • @BSMikkel
    @BSMikkel 8 лет назад +10

    I really liked watching this as well as your oscillating spindle sander-project :) You have a nice calm way of explaining and you are not afraid to show your fails. Keep the vids coming!!

  • @MRrwmac
    @MRrwmac 9 лет назад +2

    Great build, design and use of what's available! Watched it twice and will watch again! Thanks for sharing!

  • @moejunior
    @moejunior 8 лет назад +3

    Awesome job. Shows perfectly a learning process. Not afraid to try, fail and try again till it works fine. One of the greatest DIY build videos I ever seen. Congratulations! :-)

  • @timfoster5043
    @timfoster5043 8 лет назад +1

    I'm impressed that you've made this with other DIY tools. Good job!

  • @curtiskauffman
    @curtiskauffman 8 лет назад +7

    thank you for showing your mistakes as well as your successes, it answers a lot of questions.

  • @martinwalters1954
    @martinwalters1954 8 лет назад

    Love the improvised machining setups. Nice work. Lots of good ideas here.

  • @johnnybravo2373
    @johnnybravo2373 9 лет назад +1

    Your videos are always a treat to watch. Thanks for sharing.

  • @ishortland
    @ishortland 7 лет назад

    Very impressive self build and a great video to illustrate how you made it.
    Good stuff!

  • @WayOutWestx2
    @WayOutWestx2 9 лет назад +6

    That's brilliant! Very impressed with your design and the amount of work you did. Thanks for sharing - I'm inspired

    • @rockereb
      @rockereb 7 лет назад +1

      ^^Exactly what I was going to post!

  • @leckyman2010
    @leckyman2010 4 года назад

    I loved this video. From the pull saw to the dressing gown. Thanks Dan.

  • @woodstoney
    @woodstoney 8 лет назад +1

    I really enjoyed your vid and thought it quite informative and helpful for those contemplating such a build. Nicely done!

  • @fossman03
    @fossman03 8 лет назад +3

    You had me chuckling when the drill bit broke at the final stages. We've all been there. Awesome project and awesome video!

  • @hussainali9999
    @hussainali9999 5 лет назад

    All my respect, you have many skills and have the magic to joint them in good-way.

  • @AMDonaghey
    @AMDonaghey 7 лет назад

    Great job and fantastic film making as well. Keep up the good work

  • @Aqzaqa
    @Aqzaqa 8 лет назад +1

    This was a joy to watch. Nice comic relief to show some mistakes along the way. Thanks

  • @couchpotatoe244
    @couchpotatoe244 7 лет назад

    Wow! You've certainly raised the bar on DIY drum sanders

  • @drmkiwi
    @drmkiwi 8 лет назад

    Mammoth project, requiring a lot of perseverance and patience. Well done.

  • @leeratliff7588
    @leeratliff7588 9 лет назад +4

    Very nice build. I came here after I heard Matthias mention you in an interview on Bob Clagett's channel. He said you feature some "top notch engineering". Pretty high praise coming from him. Having just watched nearly all your videos, I have to agree. I love how you make do and move forward with whatever tools and materials you have available. Subscribed.

    • @dangrundel
      @dangrundel  9 лет назад +2

      Just watched that video and that's crazy. It's like having Jimi Hendrix compliment your guitar playing.
      Thanks for the compliments, and for subscribing!

  • @FloweringElbow
    @FloweringElbow 6 лет назад +1

    Awesome Simon! love it, and your way of explaining. Thanks for sharing.

  • @larryparamedic
    @larryparamedic 9 лет назад

    I loved your video! The humor you put in is great.

  • @madmikemakes3056
    @madmikemakes3056 4 года назад

    I agree with the other comments on the handcrafted Japanese pull saw. Nearly fell off my chair laughing. Great build. Second time I've watched this video. I really need to build one of these soon.

  • @djAnakin
    @djAnakin 8 лет назад +1

    That hand crafted Japanese pull saw is amazing!

  • @Mathias_Mechanic
    @Mathias_Mechanic 8 лет назад +3

    Simon, i like your video. You show the real world, including failed attempts :)

  • @j.d.ransom6721
    @j.d.ransom6721 8 лет назад +2

    Fantastic build Simon.

  • @MatthewTinker-au-pont-blanc
    @MatthewTinker-au-pont-blanc 9 лет назад +1

    I like the wood machine approach (Matias Wandel!) Thanks for a good well thought out Video.
    Regards, Matthew

    • @dangrundel
      @dangrundel  9 лет назад +2

      Thanks for the kind comment! If it weren't for finding Matthias' website i'd probably still have a hard time believing you can make stuff like this out of wood.

  • @BenKempa
    @BenKempa 7 лет назад +1

    Awesome job! This video is edited very nicely

  • @CosmasBauer
    @CosmasBauer 9 лет назад +8

    Wow a really wonderful machine!

  • @masf1977
    @masf1977 5 лет назад

    Awesome and compact machine. Thanks for showing us this. Subscribed.

  • @myutube6422
    @myutube6422 6 лет назад

    A man after my own heart, engineering on the fly!!! Try it and if it doesn't work, try plan B, or C or D. Never give up & don't worry about perfect. I was looking for the adjustment solution for mine, thanks.

  • @jamesopell
    @jamesopell 9 лет назад +1

    Incredible build.....amazing job Simon.

  • @Theonlymoog
    @Theonlymoog 9 лет назад +1

    You, sir, are a true craftsman.

  • @davegibbon456
    @davegibbon456 9 лет назад +1

    Hi Simon, just watched this and I am so impressed. I think this is the best homemade thickness sander build I've seen on RUclips, I've been planning on making one for myself for ages,and am now so inspired I might actually get round to doing it, I just wish I had your skill to help me achieve this. Thanks for posting and I've also subscribed. Regards, Dave.

    • @dangrundel
      @dangrundel  9 лет назад

      Dave Gibbon Thanks! I'm really happy with how the sander turned out and i've been getting alot of use out of it lately. As for skills, I don't really know much more than what you'd pick up watching Matthias Wandel's videos. You've probably already seen them, but i'd recommend having a look if you haven't already.

  • @WoodworkingEngineering
    @WoodworkingEngineering 6 лет назад

    Very good design 😊😊
    And I really appreciate you keep the mask on whatever you are doing in the shop 🤟

  • @Wintergatan
    @Wintergatan 9 лет назад +1

    Wonderful build, wonderful video. Thanks!

    • @nicktrousers
      @nicktrousers 3 года назад

      Well well well if it isnt mr sunk cost fallacy.

  • @Castle6064
    @Castle6064 9 лет назад +1

    Brilliant well done a great build. Enjoy

  • @MichaelLaffin
    @MichaelLaffin 9 лет назад +4

    Amazing build! Loved the purple paint :)

  • @Jer_Schmidt
    @Jer_Schmidt 9 лет назад +14

    Best homemade drum sander I've seen!

    • @BleuCollarFndryMTL
      @BleuCollarFndryMTL 8 лет назад +1

      Jer's Woodshop i'd like to see your ideas on buiilding one. Some more use of metal would be nice

    • @salvadorguitron
      @salvadorguitron 6 лет назад

      Jeremy Schmidt e

  • @topgundk
    @topgundk 9 лет назад +1

    Brilliant, just brilliant. Got a new subscriber...

  • @warrenkaye8679
    @warrenkaye8679 4 года назад

    I like you left the fails in the video. We have all been there! Good job

  • @leskuelbs9558
    @leskuelbs9558 9 лет назад

    well made video and a great sander!

  • @tiitsaul9036
    @tiitsaul9036 9 лет назад +2

    love the paint roller handle

  • @stefankarakashian4442
    @stefankarakashian4442 2 года назад

    A tip that might help with small parts is to build to spring tension rollers, placing them about 14mm from the main drum. You should also try not using adhesive, the wedge clamps should be enough tension to hold the paper on. I plan on building one using a used treadmill motor and wiring an SCR with a bridged rectifier to convert the AC voltage to DC to run the gear motor and the main motor. I enjoyed the build. I would have had to edit the cussing out when the top glue failed. Painters or duct tape can actually hold mitered glue ups pretty well. I learned that making a segmented drum. Thanks for the video. cheers

  • @houstonfirefox
    @houstonfirefox 9 лет назад

    Very nicely done! Really enjoyed watching the build (warts and all!). The MOSFET for the speed controller might benefit from being mounted to a large hunk of aluminum, etc in order to dissipate the heat (as opposed to a fan which gathers dust). Again, Awesome Video!

  • @bmilhoan
    @bmilhoan 5 лет назад +1

    Well, if you are watching Matthias Wandel, you're watching some of the right stuff. I've been trying to decide if I'm suited to making machines like this. I certainly don't have the budget to buy everything outright and might never get to build anything if I wait!
    As far as the RUclips feed, I've notice that I'm getting far fewer woodworking vids in my feed. just the other day, I watched a single Matchbox car rehab video and suddenly I get a feed full of them.
    I subscribed and am really looking forward to watching your channel. I'm a little hard of hearing so I have to turn on your auto CC track. I work in a disability services office so I know that Google auto CC doesn't get everything right. Kind of funny...LOL Thanks for the hard work.

    • @dangrundel
      @dangrundel  5 лет назад

      It's a shame Matthias Wandel had to duck out of making big videos due to a tendon injury. But at the same time I feel something has really changed with youtube in terms of what sorts of videos can be successful over the last few years. The woodworking stuff I get recommended by the algorythms tends to be produced by guys with quite impressive workshops and equally impressive budgets, or jobs that give them access to fancy CNC machine tools, along with swish production values that mostly just make those projects seem unattainable to me and I imagine alot of other people. They feel like they're purely "entertainment", and not edutainment you can lift ideas and learn from - or let you feel part of some sort of online community of hobbyists.
      I'm also fairly sure the search algorythms are against me too. It's become increasingly difficult to find information on certain topics, with good results being buried deep within searches for very specific terms. All in all i'm not too thrilled about youtube or google these days. And that along with my recording equipment falling apart has put me off the idea of making any more videos. So don't expect too much more from me or this channel.
      Thanks for the kind comment though.

  • @new2wood1
    @new2wood1 8 лет назад +1

    Simon, nice job mate im looking to make one myself soon, you sound like your from my neck of the woods

  • @madmikemakes3056
    @madmikemakes3056 4 года назад

    Nice build and video.

  • @AlFurtado
    @AlFurtado 9 лет назад

    Really great job and presentation

  • @kurtrozario1
    @kurtrozario1 8 лет назад

    You must have as big a heat sink as you can, glued with a good head sink paste/glue on to your speed controllers mosfet, if you havent already done that. Else, do add a 12v fan. Doing so, over my 3d printers controller has done well for the motor driver boards.
    I can see how much work you put in and I really respect the honest video you have posted here.

  • @MicroRCFiend
    @MicroRCFiend 9 лет назад

    Much enjoyed, thanks for putting to together.

  • @dthievin
    @dthievin 2 года назад

    Daniel, you're an amazing young man. We live at a time when not many people in your generation know how to tackle such a project and work through the pitfalls. I must say that your ingenuity reminds me of my father. For those of us on this side of the Atlantic, it would have been helpful if you spoke just a little slower. :)

  • @j.danaclark89
    @j.danaclark89 7 лет назад

    Very nice build! To sand smaller pieces you might consider putting a set of grippy rollers on either side of the sanding drum that are rotating at the same speed as the conveyer.

  • @rbates1944
    @rbates1944 8 лет назад

    Great job! and great video.

  • @PJL1281
    @PJL1281 9 лет назад +1

    Nicely done.

  • @JordsWoodShop
    @JordsWoodShop 9 лет назад +4

    Great video mate! Oh, and awesome sander!
    The only thing I can see that commercial sanders have which your machine doesn't is in/out feed pressure rollers which may help with shorter pieces.
    Jordan

    • @dangrundel
      @dangrundel  9 лет назад

      At some point I might be using this sander to make veneers, so i've got plans to add infeed/ outfeed rollers that attach to the tops of the sides of the table part. I'm saving that for if or when I need it though.

    • @beanxlj
      @beanxlj 9 лет назад

      great build with lots of details

  • @johnbhumphrey
    @johnbhumphrey 5 лет назад +1

    You did a great job.

  • @bradhibbitts8188
    @bradhibbitts8188 4 года назад

    Great job thanks for your sense of humor

  • @reinaldopelegrina9506
    @reinaldopelegrina9506 9 лет назад

    nicely done! thanks for sharing.

  • @justryan7109
    @justryan7109 8 лет назад +1

    Amazing job.

  • @dojifly
    @dojifly Год назад

    Nice build, thanks

  • @ginoasci2876
    @ginoasci2876 7 лет назад +1

    really nice job. you're good.

  • @emintivo
    @emintivo 8 лет назад

    Great build. Thanks

  • @apinakapinastorba
    @apinakapinastorba 9 лет назад +1

    Turning those kind of drums and stuff using a plunge router is actually very handy. You get dead straight surface. You turn the item very slowly and move the router along the item in a pair of T or L rails.

  • @gordonmillar998
    @gordonmillar998 9 лет назад +2

    Oh! What is that I see being sanded? A segmented Bowl perhaps :-))
    Great video, great to see you mention the odd mistake and how you overcame it.
    10 out of 10.

    • @dangrundel
      @dangrundel  9 лет назад

      It's something similar, the segmented pot of a banjo.

  • @FPChris
    @FPChris 3 года назад

    All your little mishaps. Yep. That’s me. Been there! Great job.

  • @EpicPwnWin
    @EpicPwnWin 9 лет назад +1

    YES! CONTENT!

  • @pabloloko
    @pabloloko 8 лет назад

    great, thanks for sharing project .

  • @albi55uk
    @albi55uk 7 лет назад +2

    Nice for Gandalf to drop by and lend a hand at 5:05

  • @sumandl
    @sumandl 7 лет назад

    respect! subscribed buddy

  • @hurtinbombs
    @hurtinbombs 9 лет назад +2

    Great persistance with limited tools , nice job

  • @alvaliable
    @alvaliable 7 лет назад +1

    exelent :3 grettings from argentina :3

  • @bruceboggemes9724
    @bruceboggemes9724 9 лет назад +2

    Handcrafted Japanese pull saw-I have one too!

  • @RegArtwork
    @RegArtwork 7 лет назад

    impressive thanks for sharing

  • @alanlancaster1321
    @alanlancaster1321 4 года назад

    Ok thank you so I'll watch it several times and figure it out to made it one out of it

  • @Jose-qd7gl
    @Jose-qd7gl 4 года назад

    Wow, just wow!!!!

  • @ValdirOtrilla33
    @ValdirOtrilla33 8 лет назад +3

    It was great friend, I will build for sanding my shovel pizza manufacturing.
    Thank you.
    Valdir Otrilla
    Brazil
    ====================
    Ficou ótimo amigo, vou construir para lixar minhas pá de pizza que fabrico.
    Obrigado.
    Valdir Otrilla
    Brasil

  • @petercollin5670
    @petercollin5670 9 лет назад +1

    Bravo! I am suprised that such a tiny motor can run the feed belt.

    • @dangrundel
      @dangrundel  9 лет назад

      Windscreen wiper motors have a worm gear reduction in them and that gives them alot of torque at a low speed. What really amazed me was the brushless outrunner motor I bought to power my goofy electric bike. It wasn't that light a bike and I'm not that light a person, but it could still push me along at 15mph no problem.

    • @petercollin5670
      @petercollin5670 9 лет назад

      I'll have to watch that video!

  • @ib6294
    @ib6294 5 лет назад

    I like how he is in the shop working in office attire. And for fucks sake ill buy you a driver

  • @Cnctrldotcom
    @Cnctrldotcom 9 лет назад +1

    Seriously impressive build. I've been meaning to have a stab at building a drum sander for a while so notes have been taken. I built a belt sander a while back; when I saw you building the rollers out of MDF I thought you'd somehow secretly filmed my attempt as I had exactly the same problems. The solution I came up with was to soak the MDF in sanding sealer. Being solvent rich it didn't cause the MDF to expand and crack. The end result was acceptable rather than great though, I'd do it with ply next time as you did. P.S. where can I buy one of those flush cutting saw saws, they look great.

    • @dangrundel
      @dangrundel  9 лет назад

      That's interesting. Someone on a forum suggested something similar (with diluted polyurethane varnish) and I was wondering if it'd work. I avoided doing it though since it probably would've taken a long time to dry, and solvent fumes tend to irritate my stupid lungs.
      Unfortunately that saw is a one of a kind though.

    • @Dickie2702
      @Dickie2702 Год назад

      Bit late to the party but epoxy is the way forward. It will naturally wick into the MDF especially if it is warm.

  • @petevickers2668
    @petevickers2668 5 лет назад

    top job

  • @michaelkeymont501
    @michaelkeymont501 3 года назад

    Snubber diode on the MOSFET will help keep it cooler. Schottky rated at enough amps to cover the motor +20% or so...

  • @gregoroffierski8606
    @gregoroffierski8606 9 лет назад

    Hi , really enjoyed watching but could you tell me where I can purchase one of those big belts that you used as a conveyor?
    Keep it up

  • @thecorbies
    @thecorbies 9 лет назад

    Hi Simon. I came across and subscribed to your channel maybe a year ago and watched every video to date. I REALLY enjoyed watching and was inspired by them. I also like the concise way you make your videos. It seems like your last video was ages ago, so please, please please find more projects to upload.
    Regards Mark in the UK

    • @dangrundel
      @dangrundel  9 лет назад

      I try to avoid making videos about things that I feel are already well covered by other people's videos. Like there's a million videos on dust cyclones already and I don't feel i'd be adding anything by making a video of my own.

    • @thecorbies
      @thecorbies 9 лет назад

      Hi again Simon, and thanks for your reply. That's just it though; everybody has THEIR way of doing things. A different take and a different approach to things if you like. Someone else also commented that he liked the fact that you leave in the mistakes - we all make them. and it adds a touch more realism to the project. Having said that, I wish you'd put a plaster on your cut in this video. It looked fairly painful. Thanks again for sharing - any idea what your next video might be?
      Regards Mark in the UK

    • @dangrundel
      @dangrundel  9 лет назад

      thecorbies
      The cut was fairly deep but surprisingly didn't hurt that much. I did it while fitting a door which a wonderfully sharp chisel. It was at the point where it was just starting to hold itself closed, so i'd taken the plaster off. And then I managed to drop another, different, chisel into it and re open it.
      Next video I can't make any promises with. I'm probably gonna try continuing to make a banjo (the hexagon I was sanding was for the pot), but i've also got a big and complicated project that I need to work on at the same time that'll most likely take a long while. I guess it depends on how I end up dividing my time between the two, but I would like to try get the banjo finished as soon as possible. I've been watching Treme (good show so far) and it got me back into playing my crappy current banjo.

  • @YourOldDog
    @YourOldDog 7 лет назад

    Great job all away around. Great dialogue, video and project. Love the purple! I have wanted to build one for ages and love your wiper motor idea, I actually have all that stuff in my radio shack ! Just one question, do you still have all your fingers? LOL All the best

    • @dangrundel
      @dangrundel  7 лет назад

      Thanks very much. And somehow, yes. Although I sliced a bit off the side of my left finger yesterday at a friend's house. We tend to keep the knives at ours fairly dull so i've developed some bad habits that caught me off guard with their razor sharp ones.

  • @ktjwilliams
    @ktjwilliams 9 лет назад

    That's a really nice sander .. I been shopping around for one at a good price but drum sanders are just so expensive .. Think I'm gonna have to make my own .. Did you get plans somewhere or did you wing it ..

  • @pocket83
    @pocket83 9 лет назад +10

    I don't think most viewers actually make stuff. If they did, I think this video would be far more successful than it is. This was so well made that it actually makes me a bit embarrassed about the childish crap that I produce. The video was both enjoyable and useful for me to watch, and so it honestly makes me angry how far off view distribution can be with respect to quality content. Oh well, such is life.
    As for the spray adhesive on the drum, toluene is the only solvent that I have found that will remove the stuff. For that reason (for my disk sander), I just put it on lightly, and allow it to remain. Your spray seemed a but aggressive; I think it was that industrial web type for foam-rubber welding, so you may want to seek a milder brand if it is available to you. General purpose 3M spray is fine like hairspray, so it leaves less gooey, gummy blobs remaining after peel-off.

    • @dangrundel
      @dangrundel  9 лет назад +3

      It's funny you say that, because I feel the same way with your videos. You make some really fine delicate stuff, and figure the maths out for it. Neither of those are things i'm any good at. It's not for lack of trying, either. I'm actually right now taking a break from doing stuff after spending the morning trying to make a segmented circle (for a banjo) from dense hardwood with no success, which was my third attempt at it.
      As for viewcounts, I think it's just down to chance. Alot of people have ideas on how to game the system and attract viewers, and I even tried myself with obnoxious eye catching thumbnails, but I imagine what it really comes down to is just if RUclips's algorithms start displaying your video in the related videos on others. I know I see my spindle sander video in the related videos alot. It's still early days though and this video might start popping up like a bad penny.
      That 3M spray adhesive does look like the right stuff to use (especially for paper templates) but it's expensive, and for some reason every cheap noname brand can of the stuff I find turns out to be the globby web kind. I might have to bite the bullet and just buy a can of the right stuff, although I've got to buy ink cartridges first.

    • @jimbob6041
      @jimbob6041 6 лет назад +1

      my grandad made homemade machinery like this when I was a kid. I remember him using thick plastic pipe for the drum and used wood discs to strengthen. brings me delight watching this being built. reminds me of past days.

  • @MythicGuitarCompany
    @MythicGuitarCompany 4 года назад

    Another guy had a tip about trueing the disks... put sandpaper on the sled, and turn it on. Then using velcro around the drum seems to help with chatter, supposedly. I'm still trying to decide whether to go this route or just spend a few hundred dollars on a "real" one. I feel like it will cost me about the same either way.

    • @dangrundel
      @dangrundel  4 года назад

      I'd heard the cushioning from velcro is good for getting a smooth finish, but with this I was after dimensional accruacy. I could see it rounding over the leading edge a bit, but for making veneers that probably wouldn't be a problem. Although it might be a problem if centrifugal force flings the sandpaper out enough to catch on the conveyor belt if sanding something real thin....
      I think making your own would end up cheaper if you have alot of the materials available. I'd been collecting motors i'd found cheap in second hand shops but they're stupidly expensive to buy new. The one I used for that sander i'd gotten given after a guy posted about wanting rid of it on a machining forum (that's now kinda dead).
      The real cost though would be time. I had more time than money back then. I figure from the username you're interested in making guitars, and if I learned anything from that banjo it's that it was all too easy to get caught up doing everything but making that banjo...

  • @user-bb6ne8vl6z
    @user-bb6ne8vl6z 7 лет назад +1

    Nice

  • @1cgower
    @1cgower 5 лет назад

    awesome

  • @dedefuori
    @dedefuori 6 лет назад +4

    "Wrong way, Idiot!" That made my day lol!

  • @robertfreemond7739
    @robertfreemond7739 6 лет назад

    This is a very helpful video. How did you control the speed of the windshield wiper motor?

  • @tiitsaul9036
    @tiitsaul9036 9 лет назад +2

    fanbloodytastic. that motor is huge!
    I do like the infeed solution. Way more elegant than massive gear reductions that are normally used. Does the infeed speed controller works fine under heavy load?

    • @dangrundel
      @dangrundel  9 лет назад

      It seems to be holding up, although I had a weird problem where the switch stopped working and the conveyor was stuck on (although I could still stop it by turning the speed down to zero). It turns out the two wires from the switch passed over the mosfet's heatsink, touching it, and the thing got so hot it melted the insulation and shorted it out. I'd been running the sander for a while at that point, but it means I still need to sort the cooling out.

  • @richardwesterfield4578
    @richardwesterfield4578 9 лет назад

    very nice to bad there's no insertions to go along with grand piece of work
    thank you
    Richard Westerfield

  • @brukernavnfettsjit
    @brukernavnfettsjit 9 лет назад

    Very nice machine! Also a very entertaining and funny video. Did you steal some of Steve's purple paint? ^^

  • @eemacedo
    @eemacedo 9 лет назад

    Great work. Congratulations On.
    I live in Brazil and here not always find the things that are shown.
    I wonder what the sandpaper grid you use to drag the woods, so I try to adapt here. I would also like to know the sanding roll diameter and rotation.
    Thanks You.

    • @dangrundel
      @dangrundel  9 лет назад +1

      Eugenio Macedo The sandpaper for the conveyor belt is this stuff at 120 grit. www.axminster.co.uk/sanding-belts-406-x-1-220mm
      For the drum i'm using 80 grit sandpaper, which doesn't leave a very smooth surface, but this tool is mostly for making the surface flat and parallel. The rotation of the drum is clockwise while facing the drive belt. It rotates so as to sort of push against the work being fed in. It should reduce the chance of the thing getting grabbed and flung out. The drum diameter is 125mm and runs at 1400rpm.

  • @user-fp7yo6yv7h
    @user-fp7yo6yv7h 4 года назад

    Good!!!

  • @dinagiolo3091
    @dinagiolo3091 5 лет назад +3

    for the drum, you could have just used 4 inch PVC pipe. then make wooden inserts for the ends. pvc pipe is not expensive. you can have several drums with different grit sand paper.

    • @dangrundel
      @dangrundel  5 лет назад +3

      I didn't trust PVC pipe to be accurately round or to hold the pressure. It'd need wooden inserts throughout it for support, and to be turned round on the outside anyways. Plus I think the weight acts as a flywheel to help stop the thing stalling.

  • @cybersurfer2010
    @cybersurfer2010 8 лет назад

    Great!!!

  • @davidmonheit
    @davidmonheit 9 лет назад

    hi Simon. amazing video. I am well into building my own. just ordered steel rods but they don't fit the bearings :( I guess that I need precision ground round bar. Did you experience this? any idea where you got your steels. everything else I found. anyway super job and video.

    • @dangrundel
      @dangrundel  9 лет назад

      David Monheit I wasn't using precision ground bar if I remember right. Just regular cold rolled steel, which is usually fairly accurate. I got it from a place in Darlington called m-machine metals, who're pretty good for small orders. I guess your bar could be slightly oversized, in which case is there any way you could chuck it up in something like a drill and spin it (not too fast) and sand it down till the bearings fit? If you can't chuck it up you could just stick it in a vise and do it the hard way. I can't imagine it'd be oversize by much if it is oversized. Also make sure it isn't just chewed up at the cut edges, since any burrs or dents would get in the way of the bearing.