I've been using several rolls of aluminum oxide PSA sandpaper to lap the bottom of bench planes that I've been restoring.
I use an 18" x 18" granite tile as my flat surface, and have discovered that when removing a worn-out piece, the PSA adhesive leaves sticky residue on the tile that I must scrape off with a razor blade and some solvent. So I solved that problem by first wiping a rag across the tile with a quick spray of WD40 followed by a wipe with a dry paper towel before laying down the next sheet of PSA sandpaper. Doing this causes the sandpaper to stick well enough for use, but will still pull off without leaving behind any gummy residue.
Now to my question.
The aluminum oxide sandpaper just doesn't last when sanding cast iron. I bought these rolls (80 and 120 grit) at an estate sale for next to nothing, so I'm happy to continue to use them up, but it's wasting time to constantly replace the worn-out sheets.
What I would really like to find is PSA zirconium oxide sheets that would last much longer sanding the cast iron. But after scouring the web, I cannot find any vendor that makes such a product. So, the other day when I was browsing the bargain bin at my local ACE Hardware, I found 5 packages of zirconium oxide sanding belts of various lengths at 2 bucks per package - cool! So I bought all 5 of them and intend to cut them into 18" lengths to use on my granite tile.
So what is the best glue to use for this application?
These belts all have a cloth backing on the underside that the glue would need to adhere to as well as to the smooth granite surface. Plus I want to be able to pull off a used piece without a lot of sticky residue to clean off the surface.
Any suggestions?