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Making A Disk Sander

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Making A Disk Sander

#1

Making A Disk Sander

Stuart Johnson

>I have an old 1/2 hp motor that I want to turn into a disk sander. My idea is to turn a 12" disk out of mdf and attach it to the motor shaft.Building a box and table isn't going to be a problem. I have run out of ideas for the actual attahment to the shaft. It is a standard 1/2" if that makes any difference.

So far the only idea I have is to turn hub with a 1/2" hole and then glue / screw the mdf disk to it. I can probably use a set screw to hold it on.

Any other ideas? Or, are disks readily available at reasonable prices?

Re: Making A Disk Sander

#2

Re: Making A Disk Sander

Fred L. - North Carolina

>You might be able to find replacement disks in that size from manufacturers of disk sanders.

I doubt that they will have 1/2" holes. Lowes sells reduction bushings in the parts drawers. You will need a hole in the bushing and use a longer setscrew.

Grizzly part G5550 is a motor arbor for $3.00. I have seen the same arbors in hardware stores. This can attach to a small MDF disk centered in the 12" sanding disk, so the shaft does not protude from the sanding disk.

Re: Making A Disk Sander

#3

Re: Making A Disk Sander

John Lucas

>Stuart

Look at pipe flanges. Those things that let you anchor a pipe to the floor. That could be the basis. You may have to bore it out for your shaft size.

Re: Making A Disk Sander

#4

Re: Making A Disk Sander

John U.

>Consider using a motor pulley made to fit that shaft, and bolt/screw the pulley to the MDF. Although a pipe flange is a great idea, the pulley should run truer "out-of-the-box". The key slot and drilled/tapped hole already on the pulley will save you that extra step also.

Re: Making A Disk Sander

#5

Re: Making A Disk Sander

John Lucas

>Good idea John. You could turn a rebate in the back of the MDF to fit the pulley.

Re: Making A Disk Sander

#6

Re: Making A Disk Sander

Stuart Johnson

>I think the pully is the way to go. There is one on the motor but I'll try to find one with a larger flange.

Thanks for all the suggestions.

Re: Making A Disk Sander

#7

Re: Making A Disk Sander

Phil Joines Krum, Tx

>You could use a faceplate for a Shopsmith. They have a plain 5/8" hole. A 5/8 to 1/2 bushing will take up the slack. Grizzly among others sell them.

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