I would use them for sanding my Stix 60 kit.
Whenever I start building it.
Let everyone know what you think of them.Mine are supposed to be here today hopefully i can post some pics.
I can think of much more fun ways to turn it into a pile of dust...I would use the large block with some 40 grit paper to sand my Krill down to a big pile of fiberglass dust....then use the smaller block with 180 to sand off my fingertips so prints wouldn't show when I go "Postal"