[marxjunk]

much better surface profile..i do wheels, bumper brackets, pullies and brackets all the time..ive done sheet metal type stuff too..any factory striation remains..and markings are untouched..works really well...if theres no pits..its ready for sealer/epoxy and paint..its that good..i have a body and paint back ground..so i understand what surface prep and condition means...on a block you still see every broach mark..

heres the best way i can describe it.

blasting leaves the surface "fuzzy". and i think its because the shape of the media and its pushed in a concentrated stream thru a nozzle..and changes the surface..looks like waves under a micro scope

this brake abrade is micro stainless beads (that wear out actually)..the heat and the length of the abrading process peens the metal surface smooth..and heres why i think its better..

the part is warm..the part is rotating and the beads are coming in every direction..not a stream, like coming thru a blast gun..when i say every direction i mean, the shot machine has an octagon shape and the deflection is major..the beads are moving in every direction..so no concentrated stream..and its mechanically thrown if i understand what i have seen, not forced thru a nozzle...but i will ask my guy and take a pic of the device

my personal experience...i can see sand blasted cast iron from across the room..it just has a look...this is just steps higher..may not be for everyone like a concours guy, but for what i do..its impressive..

ive had 2 wheels go thru a metal shot blaster and was not impressed..it was a commercial machine, and i dont know what kind of pressure or "grit"...but i had to really work them over...

since i found this process..i do every thing in it..love it,,may not be for a concours type resto but for much of whats going on in a resto..its perfect for that..i believe anyway..

but im no expert on the subject..ive just tried many things and now and i'm stuck on this..but believe me..i will go another direction if theres better...i just havent found it yet....and its dirt cheap..i mean crazy cheap for me to get it done..at times i wonder if my guy is even making money..lol,,, but he keeps taking stuff from to do..