I am looking at one of those small hand held sand blaster guns, I have a mate that used one and the head was like new. uses playground sand from Bunnings. only around $45.

[Linked Image]

https://www.ebay.com.au/itm/Portable-Sand-Blaster-Gravity-Feed-Gun-Media-Etching-Surface-Cleaning-Extra-Tip/183251976047?hash=item2aaaab3f6f:g:jTgAAOSwseFcKyC8

all the best

Paul

Last edited by paul_c; 18/05/20 01:37 PM. Reason: add link and pic