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Thread: New power finger file.

  1. #1
    Supporting Member th62's Avatar
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    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  

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  2. The Following 12 Users Say Thank You to th62 For This Useful Post:

    Andyt (Jun 26, 2020), j.bickley (Apr 23, 2018), Jon (Apr 23, 2018), olderdan (Aug 19, 2018), PJs (Apr 28, 2018), rlm98253 (Apr 23, 2018), rossbotics (Apr 23, 2018), Seedtick (Apr 24, 2018), sossol (Apr 23, 2018), Toolmaker51 (Apr 23, 2018), Tule (Apr 24, 2018), Tuomas (Apr 23, 2018)

  3. #2
    Supporting Member Tuomas's Avatar
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    Nice build. Extra kudos from building whole new tool, instead of using angle grinder etc.. as a powersource.

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  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
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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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