road tow compressor for media blasting

[Harry44]

got 3x minis to media blast ready for bodywork / paint so bought a 20 gallon sandblaster and am using a localtoolsales 200 litre compressor (chinese) but pretty reliable.

it just can't keep up with the air that i need to be constantly using for blasting, its great at first but drops really quick.

thinking about getting a good used road tow compressor but i am wondering if i will be able to get the fittings to go down to the sort of sizes i am using for the blaster?

the other question is could i run the road tow compressor and have the outlet going into the large fitting on the rear on my 200 litre compressor, as i could run though my regulators, water traps and 2x retractable air lines. the compressor is next door in a brick shed.

 

[rtbcomp]

I used 2 x 3hp 14cfm compressors with a 2.5mm tungsten carbide nozzle with one of those 20 gallon pots.

It's all very well using big compressors and loads of air but be aware that you could damage car bodywork if you get too enthusiastic.

You could certainly connect the road compressor to your existing tank, the fittings would be no problem, you'll need a hose tail and reducer(s) to match the compressor hose with the tank.

 

[brightspark]

I can connect my road compressor to all my gear and other compressors I have using c couplings and adaptors if u use a road compressor on a 2o gallon pot it will hardly notice its connected and run on just over tickover. to be honest u will be there forever with that size jet and pot . should have lived local and u could have borrowed my pot with 6mm jet

 

[Harry44]

looking at a comp air c20 it has 7-10 bar and 100 - 145 psi, do you think this will be enough for blasting?

 

[brightspark]

looking at a comp air c20 it has 7-10 bar and 100 - 145 psi, do you think this will be enough for blasting?

is that 70 cfm ??if it is it will be ok for blasting using a 6mm nozzle. not overly big but will do car wheels car chassis gates ect very quick

 

[Harry44]

do you think it would be ok doing car bodies?

 

[Harry44]

71 - 106 cfm

 

[brightspark]

do you think it would be ok doing car bodies?

for personal use yes but not for a business making a profit. there not much good if the underside is covered with underseal as the grit beds in. I wouldn't use it on panels doors or bonnets neither. if intend doing it with a cheap pot with 3mm jet don't bother the amount of blockages and prat on keeping it regulated will pee u off in 20 mins

 

[Harry44]

would it be too powerful for panels?

 

[brightspark]

would it be too powerful for panels?

the heat and letting the stress out of the metal will distort them I once ruined a bonnet and some doors doing them and that was using fine sand