Since you have access to the equipment, you could offer vintage doubleshots retexture service... I got some shiny caps I could send to test out. Would make mirror shine $15 doubleshot sets from ebay a much better buy if can retexture.
I would imagine the heat level when the medium impacts the key would be high from just the friction, but the blasting station is in a non-climate controlled warehouse that has an ambient temp of about 40deg(F). I felt the medium that was shot just after it hit the key and everything was cold to the touch.
You're probably right though. Here's a picture of the medium:Show Image(http://i.imgur.com/msQG8OR.jpg)
My best guess is that one kind of that stuff in there is reacting with the lettering, haha. Damn.
LOL! I should have done that xD
When I saw this picture, I first thought it was what was left of your keys LOL
Since you have access to the equipment, you could offer vintage doubleshots retexture service... I got some shiny caps I could send to test out. Would make mirror shine $15 doubleshot sets from ebay a much better buy if can retexture.I am interested. I only go to work on MWF, though.
I was interested in doing this to my black QFR (original, with branding) case. I guess if you go very slowly and carefully, you can avoid burning / melting the keys?Moving slowly would build up more heat, but if you are going to be removing the labeling on the case, I wouldn't sandblast unless I was going to blast the whole case..
Since you have access to the equipment, you could offer vintage doubleshots retexture service... I got some shiny caps I could send to test out. Would make mirror shine $15 doubleshot sets from ebay a much better buy if can retexture.
I was going to say something similar with a more sarcastic tone but didn't want to start another small controversy.
You can pretty clearly see they got too hot, this is a common problem with sand blasting.
Even metal workers have to watch out for heat distortion due to sand blasting. Classic car restorers have pretty much abandoned it for soda and bead blasting, or acid dipping as the sand just causes a lot of problems.
Lowering the air pressure, gluing the keys to a plate (water soluble glue or try clay), keeping the gun farther away, and most importantly, constantly moving is your only option. Even then it could still end in failure.
Sorry for the bad experience.
You can pretty clearly see they got too hot, this is a common problem with sand blasting.
Even metal workers have to watch out for heat distortion due to sand blasting. Classic car restorers have pretty much abandoned it for soda and bead blasting, or acid dipping as the sand just causes a lot of problems.
Lowering the air pressure, gluing the keys to a plate (water soluble glue or try clay), keeping the gun farther away, and most importantly, constantly moving is your only option. Even then it could still end in failure.
Sorry for the bad experience.
Second on using a less aggressive medium. Possibly try baking soda.That's a bit too fine, but it would give you a very, very, fine texture. It's also terrible to shoot.
Hi delter,
words words words
Yup, mostly a practice thing. Many think that it's heat that warps the metal but in the vast majority of cases I'm postivie it's the force in which it's being blasted. A heavy mesh size + high pressure will make that metal dance.After having done metal shaping, my thought was that it was a localized hot spot warping it, but I decided to look into it a bit more.