I say "I" but I mean me and may dad as he is a master DIY carpenter! Basically constructed the whole thing out of what we had laying around.
Made a hole in the top for an inspection lamp
And a plug in the bottom to sweep it out.
Ta-da!
It has affectionately been dubbed the "tardis". Its 3' sqaure and 4' high, which is probably too big, but better that than too small. Blasting went well, I had previously used fine glass bead which gave a good finish, though not very aggressive. However I now had some more intense sandy type stuff.. (I have no idea what my dad bought!) and it does the job well, leaving a rougher finish which will take paint well.
Its fairly slow going, but I suppose that's to be expected with something as large as an engine - lots of nooks and crannies to blast at! But now I'm set up I will just keep going in and having the odd hour on it.
Fingers crossed I dont fuck the engine!