So recently I have been on a quest for a sealer that will make ABS look amazing after you file or sand the ever living crap out of it.
I like to sand harsh 90 degree corners on personal handheld products like the phone cases and Arduino labs. The problem is it leaves sanding marks.
Also ABS glue leaves behind a shinny look in areas that does not look pleasant.
I bring you more of a public service information than a Thing-A-Ma-jig.
Other clear coats just do not even cut it or feel sticky after awhile. These do not!
Both products work about the same except I like Valspar frosting much better.
It dries so fast! and covers the most aggressive tooling.
Valspar works on PLA also. Rustoleum FAILS on PLA.
See attached photos of test.
I hope you enjoy the tip ;)
Tool your product.
Spread ABS glue anywhere on it.
Wait till everything drys and spray the Renewing spray of your choice.