Shop made 12" disc sander with unique arbor design, for switching out sanding discs.

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Blog entry by hobby1 posted 08-06-2021 11:35 PM 749 reads 0 times favorited 2 comments Add to Favorites Watch

This is an arbor design for my shop made 12” disc sander that gives the option to change out sanding discs on the fly.

Video demonstration found here:

2 comments so far

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Don Broussard

4093 posts in 3585 days

#1 posted 08-07-2021 02:55 PM

Pretty neat set up with the arbor. How thick is the disk in the center, where the two recesses meet?

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

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353 posts in 3631 days

#2 posted 08-07-2021 07:32 PM

Hi thankyou,
it leaves around roughly 3/8” thickness on a 3/4” thick disc.

I originally wanted to use my drill press to make the counterbores, with a 3/4” forstner bit, but the drill press throat depth was not deep enough to accomodate it, so I had to drill by hand with a block support, however doing it by hand didn’t make a very good flat even bore, so a little wobble is the result on the spinning disk.

I think one good way to do these recesses would be to use a template guide and a flush trim bit in a router.

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