Blast gun...

[rockthebus]

I'm after a bit of advice regarding media blast guns...
I'm preparing to start the bodywork on my T3. Biggest issue is a few areas of rust in the seams.

Been looking on the machine mart site. Would the SB3 or SB5 be any good? Or is there anything better? I don't have a massive compressor just a single phase 50 litre

https://www.machinemart.co.uk/shop/prod ... -000512005" onclick="window.open(this.href);return false;

Advice is greatly received as I'm used to repairing cars which don't rust...I'll leave you to guess!

Thanks

[ELVIS]

How much CFM does it move?

Looking at spec sheet it has a 5mm (3/16" and a bit ? ) Its saying you only need 12cfm@90psi. Google 'Blasting nozzle size cfm' - remember increased nozzle size and same PSI create an exponential CFM curve.

In simple terms, ive used an (IIRC) an 18cfm compressor with a 250l tank with a 4.5mm nozzle and the compressor was working like a mo fo and had to give it regular breaks as (1) it was running out of air (2) it was getting hot.

[silverbullet]

Air tools in a nutshell! Tools dirt cheap, compressor man enough = ££££

[boatbuilder]

I have a single phase 3hp 200 litre compressor. Nozzle size is about 3mm or so and my compressor can't keep up with it at all.

[ELVIS]

Just read this thread again. Should have typed 18hp not 18cfm

[rockthebus]

Oh dear. So better to weld in new repair sections... or take it somewhere ...