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Thread: New power finger file.

  1. #1

    Join Date
    Oct 2015
    Thanked 84 Times in 12 Posts

    th62's Tools

    New power finger file.

    I wanted to use aluminum for this project, 10mm thick would have done the job but I had no idea where to souurce that size sheet from; however, I did have some sheets of 25 mm Delrin so I thought I'd have a bit of a play with that medium.

    Delrin turns nicely giving a nice finish, but when grinding and filing the finish is quite rough. I expect some more work in this area to neaten the project up a little.

    I cut a rough shape from a largish slab and set about shaping it with a finger file. The hole for the motor was turned on the lathe, this necessitated making the handle a little shorter than I'd like. As it turned out the handle fits the hand quite comfortably. I cut a slot just forward of the handle and tapped a hole from the top of the blank for clamping the motor in place. Next I mounted a small piece of Delrin in the four jaw and drilled a 10mm hole for the front wheel mount. After mounting the motor, I spun up a small piece of Delrin and sunk it into the drive drum and pushed the drum on the splined motor shaft. I was going to use some Delrin for the drum but thought it might melt so used a stell drum mounted on a Delrin Bush.

    For the motor cover I turned a 12 mm thick piece of Delrin to fit over the motor and then turned down a piece of PVC to slide over that. The end is capped with another piece of Delrin I had lying about, yellow unfortunately. I mounted the swich in that.

    The unit works nicely, but curiously the 18 volt motor I sourced from an old cordless impact driver smokes badly when run on 18 volts. On 12 volts it runs ok, if a little hot.
    Attached Thumbnails Attached Thumbnails New power finger file.-p_20180422_170059%5B1%5D.jpg   New power finger file.-21.jpg   New power finger file.-22.jpg   New power finger file.-23.jpg   New power finger file.-25.jpg  

    New power finger file.-26.jpg  

  2. The Following 11 Users Say Thank You to th62 For This Useful Post:

    j.bickley (04-23-2018), Jon (04-23-2018), olderdan (08-19-2018), PJs (04-28-2018), rlm98253 (04-23-2018), rossbotics (04-23-2018), Seedtick (04-24-2018), sossol (04-23-2018), Toolmaker51 (04-23-2018), Tule (04-24-2018), Tuomas (04-23-2018)

  3. #2
    Soikkeli Tuomas's Avatar
    Join Date
    Jun 2016
    Jyväskylä Finland
    Thanked 962 Times in 305 Posts

    Tuomas's Tools
    Nice build. Extra kudos from building whole new tool, instead of using angle grinder etc.. as a powersource.

  4. #3
    bvd1940's Avatar
    Join Date
    Oct 2012
    Thanked 8 Times in 8 Posts
    that looks like a good project to 3D print the frame.
    Thanks for the project. Nice job
    Bill in SE Idaho, Given enough incentive and proper motivation anything can be fixed

  5. #4
    Content Editor DIYer's Avatar
    Join Date
    Aug 2013
    Thanked 764 Times in 699 Posts

    Thanks th62! We've added your Handheld Power Sander to our Sanding category,
    as well as to your builder page: th62's Homemade Tools. Your receipt:

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