Removing the old paint “edges”

@mopower76, I have heard rumors of running the PSI to as little as 35. Speculating here, but safe to assume you should start low pressure and adjust up only as needed, but don’t exceed 75 - 100? Guessing the lower the pressure, the lower the friction, thus the lower the heat, and ultimately the lower the “chances” are of warping?[/QUOTE]

It’s going to really depend on your output of the compressor you have.
It’s trial and error, a good thing to do is consult with the media blast manufacturer.
Let them know what your compressor specs are and what media you are using and they can help give you a baseline of where to start.

This is why I’m suggesting doing some testing on some old junk to get a feel and get dialed in.
Working correctly you will remove easier with less waste.
I suggest also using as big a tarp as you can get so you can collect and reuse (sifted of course) the media on the tarp.
Good luck