I started using the snap-disc sanders, but wasn’t wild about the
metal hub that kept dinking up my work, so I bought some of the 3 M
micro finishing discs and have been trying them out. I’m finding some
oddities and wondered if anyone had any suggestions or comments -
The mandrels that you use with them have a pretty sturdy rubber
base, and it is hard to get any flex out of them to polish in tighter
places. Has anyone found other mandrels for these adhesive discs that
are closer in flexibility to the sand paper snap-discs?
Also - when I have used one for a bit of time (at one sitting) the
adhesive heats up and the disc moves around, which lets the rubber
mandrel come in contact with the work and it leaves black boo-boos
(removable, but annoying, and it kind of stays stickier than when
originally applied). Any solutions, other than stop and start
polishing? It really doesn’t take very long at all to get the
adhesive to soften.
I’m open to other brands, etc - just want finer sanding capability
than offered by the snap discs and no metal hub.