Definitely buy a bigger cabinet than you think you will ever need. I have a smaller Skat Blast which I've both deepened and widened over the years. I use a carbide nozzle and black blasting media from Menards for about $7 for a 50# bag. I used to use aluminum oxide but it just got too expensive. To save money on the lens protectors I buy bulk mylar from McMaster Carr and cut my own which I attach with clear packing tape. Costs about a buck apiece. My cabinet is used almost daily, a great tool investment.
