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Disc Sander// How To

T2 Tsai
Apr 10, 2016
2 min read

Build Video:

Hey guys! I am T2 and welcome to my stuff. Today, I will be showing you how to build a 10 inch homemade disc sander. Unfortunately, I did not make a plan for this project, but I do have a sketchup plan for you guys to download. You can modify my plan to make any size disc like 6 inch, 7,8,or whatever you you like in order to fit your drill.

Free SketchUp Model Available Here

I first cut out all the parts for my homemade disc sander.

Then, I assembled the base for the disc sander.

Now that the base is assembled, I can use that as a template and glue up the back support piece for the drill. The support was just two pieces of 3/4 inch plywood.

As I said before, my disc sander is a 10 inch disc sander, so I drew out a circle with a compass with a measure of 5 inch in radius and cut out the circle with a jigsaw.

After cutting the circle, (disc) I can then drill a 1/2 inch hole at the center point for my 1/2 inch bolt, which acts like the shaft for your drill to hold on to.

After drilling that 1/2 inch hole, I chiseled out a hexagon around the hole to allow the bolt to drop into the disc below the surface.

Drilling a 1-3/8 inch hole straight through on the back support piece for the bearings.

After that, I can then glue the back support piece onto the base.

And because the bearings have this little indented part, when you drop your bolt (shaft) into the bearing, the disc and the back support piece won't touch each other and create a burn.

And now, it's just the matter of installing the bearings.

I then take my bolt and my disc and line them up in the bearings and push them together to the back support piece to form a tension.

Then take two nuts and tightened them down.

I got this sand paper from Harbor Freight which comes with 5 sand papers and different grits which is very handy and especially, they sell this pack for only $3.99!!!

Then I just drilled some holes and countersinked them to drive some screws for the tabletop to the base. (Sorry I didn't film how I made the drill mount support, but I will put that in the sketchup plan and you can modify it in order to make your drill fit on that mount.)