segmented ring sanding disc for lathe

[gsieracki]

I'm starting to make more segmented projects. The diameter of my next project exceeds my curent belt/disc sanders capacity. I am thinking of making a sanding disk mounted to a dedicated faceplate. Then using either self adhesive or 3M spray adhesive to mount the paper to it. Overall dimension would be 9", possibly 10".

Is there a particular material that would be good for this or any I should stay away from?

Current plan is 3/4" plywood.

Thanks!

Gerry

 

[Griesbach]

Gerry,
I use melamine covered MDF as it's lots easier to apply and remove the sanding discs without tearing up the wood as may be likely on a plywood disk.

 

[Ed_McDonnell]

I've had good luck using MDF for that sort of thing.

Ed

 

[GA Darling]

I made mine out of MDF with melamine to cover the MDF surface. It makes it easier to remove the sanding disk and helps keep the sanding surface flat.

GA Darling

 

[Malcolm Tibbetts]

Gerry,
I recommend avoiding the use of plywood. MDF will provide a much more stable disc. If you're going to use it long-term, I would also seal it against moisture.

 

[cypher]

If you put the disk on a face plate, mount to your lathe, and then hold you ring to it you may have a tendency to unevenly pressure the ring to the sanding disk resulting in tilted ring.

I think that is what you are trying to do.

Alternate suggestion.

I did something similar. I monuted a 13 round piece of MDF to a face place. mounted it on the lathe to make sure it was balanced and true. Draw 10-15 rings on the MDF while turning. I use this to mount my rings to using double sided pressure tape. the pressure tape will provide good hold. the drawn ring allow me to center correctly. This way i can gently turn flat with a gouge and i don't have to worry about tilted rings. You can also make a sanding board. Mine is about 15in long. I glued 80 grit samd paper to it and i use it to evenly hold aginst the ring mounted on the above device.

 

[jbburgoon]

Drill press option

I have had success using a 12" mdf disk screwed to a right angle grinder atachment. It is able to be chucked into the drill press. Using the quill lock, you are able to thickness sand. Take a minimal bump of the feed wheel and rotate your piece under the outside edge. Wear a dust mask!

 

[pencheff]

I'm starting to make more segmented projects. The diameter of my next project exceeds my curent belt/disc sanders capacity. I am thinking of making a sanding disk mounted to a dedicated faceplate.

Ideally, to flatten your segmented turning project rings you would want to use a thickness sander. How about this project to use your lathe as a drum / thickness sander.