Yep go for it m8, have no doubt you'll succeed, its extremely simple to set up, makes a lot of mess tho', I worked in a fab' shop years ago and they had a home made one, it had an old gas bottle (the blue caravan type) with the arse cut off and then fitted with screwed brackets and a gasket so it could be fitted back together again-pressure tight, this bottle had a small guage pipe brazed on which fed a small volume of air into the bottle, bottle on a stand as it gravity fed the nozzle, which was no more than a 'Y' branch, air in one branch, gravity fed ' kiln dried sand'-bought from Keyline building supplies (not cheap) down the other, hey presto Terminators exfoliater, simples
ps Bicarbonate of soda (sodium bicarbonate) works great and you can get this easily if you have a bakery nearbye, full protection when using this material tho', keep us posted !