12 Disc Sander

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Project by ChunkyC posted 06-15-2010 12:48 AM 13748 views 32 times favorited 11 comments Add to Favorites Watch

I made a 12 disc sander like Jeff’s. See his here Jeff's Disc Sander.

I made a few changes to the original; I had a 1/2 sheet of 3/4 Baltic Birch Plywood that I used instead of the MDF the plans called for, it has a screw that acts a stop for the table to rest at 90 degrees (see picture 2), I added a length of 2” PVC pipe to get the dust collection connection back were I can get to it (see picture 3) and I used a quick disconnect bushing that I got from McMaster-Carr for somewhere around $7 instead of the “pulley” method in the plans.

My shop, like most ever other shop, has a limited amount of space. So I use the router table to set the sander on. This does two things for me, 1) I can use the dust collection from the fence for the sander and 2) I can use the start/stop switch for the router for the sander

I need a way to fasten the sander to the top as it tends to slide around. I’m thinking that I will make a bracket that will utilize the fence adjustments slots already in the top. I don’t have the finer points of that sorted out yet but I think it work just fine. It needs a light sanding and coat of polyurethane. Other than that, she’s ready for hard use.

This has got to be the simplest idea for a disc sander that I know of. I had difficulties getting the table installed in the correct position but the stop screw helped that out a lot. For the $14.00 that I spent tonight for (2) 80 grit sanding discs, this was a VERY affordable project. The store where I got the sanding disc has a Delta for sale for $229! If you have a spare 1/3 HP or larger motor laying around, this is an excellent use for it.

I’m thinking about adding laminate to the table top. Anyone have any cons to doing so?

Thanks for looking


-- Chunk's Workshop pictures:

11 comments so far

View ChunkyC's profile


856 posts in 3253 days

#1 posted 06-15-2010 12:50 AM

Now might be good time to remove the blue tape on the false draw front. lol

-- Chunk's Workshop pictures:

View Jeff's profile


116 posts in 2914 days

#2 posted 06-15-2010 01:17 AM

Hey, nice job Chunk yours looks more carefully put together than my own. Did you have any vibration issues with the disc? I have thought about replacing the disc with MDF (since it’s generally flatter than ply).

-- Jeff

View Bearpie's profile


2601 posts in 3017 days

#3 posted 06-15-2010 01:18 AM

I would much rather see a laminate on the surface as it will help your work to slip and slide easier and will aid in the ease in sanding over the polyurethane coat. Good build on this, I’m in need of a belt sander and disc sander but will wait.

Erwin, Jacksonville, FL

-- Erwin, Jacksonville, FL

View Abbott's profile


2570 posts in 3303 days

#4 posted 06-15-2010 01:20 AM

Yeah, I have a 12” disc and it gets a LOT of use, nice work.

-- Ohh mann...pancakes and boobies...I'll bet that's what Heaven is like! ♣ ♣ ♣ ♣

View ChunkyC's profile


856 posts in 3253 days

#5 posted 06-15-2010 01:24 AM

Jeff: “looks more carefully put together than my own” All I can about that is looks can be deceiving! I had no vibration problems at all. I use a router with a small trammel to cut the disc. I already had a round piece of ply from my Thein Barrel Separator project and I used that. I installed the disc on the motor a fired her up with the motor just setting on top of my workbench. It didn’t even try to walk away! I got lucky. I did fasten it down before sanding the edge to 12” though.

-- Chunk's Workshop pictures:

View ChunkyC's profile


856 posts in 3253 days

#6 posted 06-15-2010 01:26 AM

maluco: The pulley is what the plans call for for attaching the disc to the motor shaft. I used the quick disconnect bushing instead. The disc sander is direct driven.


-- Chunk's Workshop pictures:

View ChunkyC's profile


856 posts in 3253 days

#7 posted 06-15-2010 01:28 AM

Oh and I don’t recommend that you operate the sander with the motor leads tossed of the shaft of the motor like that. (This is me shaking my head now!!)

-- Chunk's Workshop pictures:

View woody57's profile


650 posts in 3426 days

#8 posted 06-15-2010 03:51 AM

good job
I would laminate the top

-- Emmett, from Georgia

View BillyJ's profile


622 posts in 3202 days

#9 posted 06-15-2010 03:51 AM

Thanks for posting. It gives me some ideas.

-- I've never seen a tree that I wouldn't like to repurpose into a project. I love the smell of wood in the morning - it smells like victory.

View fritzz67's profile


98 posts in 2904 days

#10 posted 06-15-2010 04:05 AM

cool sander very useful where did you get motor ??

-- Richie, PA - " from rough cut to fine rustic furniture "

View Skylark53's profile


2669 posts in 3059 days

#11 posted 06-15-2010 04:25 AM

Looks great. You’ll use it a lot.

-- Rick, Tennessee, John 3:16

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