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Thread: Honing discs for bench drill

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    Supporting Member Philip Davies's Avatar
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    Honing discs for bench drill

    Honing discs for bench drill-5934f75b-fdf1-420b-b36c-a231a1d72943.jpg

    You may have seen that some whetstone manufacturers offer profiled honing wheels for their machines. They are made of leather. They aren’t cheap!
    Medium density fibreboard seems to have the same density, take up the polishing compound just as well and are cheap as chips to make. Even if you don’t have a holesaw, if you run the blank on an arbour in the drill, it is easy to shape the spinning disc with a rotary rasp, even a hand rasp.

    You must run it at a slow speed, with the edge away from the direction of rotation, as I am sure you will recognise.

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    Thanks Philip Davies! We've added your Honing Disc to our Sharpening category,
    as well as to your builder page: Philip Davies's Homemade Tools. Your receipt:




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    CharlesWaugh (Oct 6, 2020)

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    Philip,
    Fantastic idea - thank you!
    I'll make some ASAP.

    I'm working on making a 24" disk sander that will be variable speed.
    The disk will have two 1/2" i.d. drill bushings pressed into it.
    That way, I can cut a 24x24 piece of MDF, trim it roughly round using my bandsaw, then mount it on the disk by drilling through the drill bushings and using pins to align it, with a few screws elsewhere through the disk to hold it on.
    That way I can have quickly-changeable grit disks, all the way up to . . . you guessed it! just MDF, charged with polishing compound.

    I will also be making the sander so the entire motor-disk assembly can swing from vertical to horizontal, so lapping is much easier.

    Further, even the edge of the MDF disk will be a handy spot for polishing compound or a glued-on strip of abrasive paper.

    All of that said, I love your idea - it'll make my carving gouges shine (literally).
    :- )
    Charles Waugh
    www.charleswaugh.com
    "Any tool is just a kit, to be modified as needed for the job at hand"

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    Charles, that remountable disc will work, via the variable speed to run RPM up. Most will find balance issues difficult to remedy, use small pins and bushings. I'd also offset the positions or make an index mark that re-orients disc same way every time.
    The back of the changeable side will need to be relieved, because normal facing off is not perfectly flat edge to center; [constant feed rate vs reduction in diameter].
    While I'm work-table engineering [and performing exotic Pacific Islander dances, to visualize pin and screw locations], 6 or 8 perimeter screws should dampen the assembly fine.
    Last edited by Toolmaker51; Oct 6, 2020 at 09:51 PM. Reason: typo; made 'small', too smal...
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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by Philip Davies View Post
    Click image for larger version. 

Name:	5934F75B-FDF1-420B-B36C-A231A1D72943.jpg 
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ID:	36814

    You may have seen that some whetstone manufacturers offer profiled honing wheels for their machines. They are made of leather. They aren’t cheap!
    Medium density fibreboard seems to have the same density, take up the polishing compound just as well and are cheap as chips to make. Even if you don’t have a holesaw, if you run the blank on an arbour in the drill, it is easy to shape the spinning disc with a rotary rasp, even a hand rasp.

    You must run it at a slow speed, with the edge away from the direction of rotation, as I am sure you will recognise.
    Nice. Done this for carving tools in MDF used as a contoured strope. I use the chisel to make the correct shape. Your idea is faster! I like it!!

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    Supporting Member Toolmaker51's Avatar
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    Plane irons, wood chisels, leather working and knives in general; the disc's Phillip Davies posted, have another use in perfection of cutting tools.
    If you machine plastics, copper, free brass, ledloy and free steels, annealed aluminum etc; they really love fine cutting edges, not just turn/ bore, form tools most of all.



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  11. The Following 2 Users Say Thank You to Toolmaker51 For This Useful Post:

    mwmkravchenko (Feb 12, 2022), Philip Davies (Feb 11, 2022)

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