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Thread: New power finger file.

  1. #1

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    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 10 Users Say Thank You to th62 For This Useful Post:

    j.bickley (04-23-2018), Jon (04-23-2018), 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
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    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
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    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
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    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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