Larry wrote in news:P4Q%h.41247$n_.10346@attbi_s21:

I am going to make a stationary disc sander with quick change discs. I
am considering using Shopsmith steel sanding plates, but don't know how
good they are. Do they run true?

Thanks

If you want to use my email address, you will have to take out the "7".

You should probably know that the arbor diameter may not be 'standard' with
the Shopsmith.

The primary use of the Shopsmith in my shop is as a disk sander these days.
Works OK. And at the price of used ones, you may be able to score them
cheaply.

Patriarch