I forget who makes it but someone makes a jig to fit the miter slot on my disk sander and line the barrel up parallel to the disk. Is it any good and where do I get it.
I have one and use it all the time on a bench top belt/disc sander.
I made Deleon sleeves for the various kits. I also check the "squareness" of the jig to the disc sander with a small machinist square.
It works for me!