what psi is your sandblaster? usually panels warp due to the high heat and pounding from the sandblaster... just a word of caution to anyone planning to sandblast anything... keep a lower psi and keep the gun as far away as possible.
Haha - right... Sandblaster can totally destroy the iron surface... It mainly depend on how big are particles and how big is the sandblaster...
1. The small one: I use it with 10 bars and nothing wrong happens. This one is really small and the energy with which particles are thrown is not really big compared to the pressure.
2. The big one... This is much much stronger. Usually i blast with 5-7 bars, but it is highly too much for big plain surfaces like doors or trunk or anything big. The tranny I blasted with 4.2 bars. It was not causing overheating or any other problems like deformations at all.
BUT REMEMBER:
-do not blast long in one place,
- do not use too high pressure /just raise it from "idle" to the point when everything starts to work just fine and DO NOT RAISE THE PRESSURE ANYMORE.
I didn't tell You but, my friend wanted to sandblast BMW 327 old classic car, so he has taken it to the guys who usually sandblast bridges or other urban stuff... It was huge mistake... The car needed to be hammered to give it previous shape... All the irons were nicely sandblasted but totally deformed due to local heat and monstrous energy of big amount of high energy big big particles.
They used sand which is 1-5mm in diameter... I use tha sand which is 0.1 - 0.3mm in diameter. Theese are two totally different machines. My nozzle is 3mm in diameter , their nozzle was 18mm in diameter... And they didn't do any try! Just sandblasted the whone car - stupidity can be unlimited. No more comments
