pounds of air pressure to etch glass

[dionysiosix 0]

I WOLD LIKE TO KNOW AT WHAT AIR PRESSURE IS OPTIMAL TO ETCH GLASS AND WHAT IS THEBEST MEDIA AND PREFFERED GRIT?

[haumana 1,220]

searching the forum will go a long way.

 

[Wildgoose 4,200]

I can only give you what works for me. I use some 100 grit crushed porcelain (because using sand is dangerous! unless it's garnet sand it creates silica dust and is just about as dangerous as asbestos for real so be careful). You can use several other products to blast as well. The porcelain started out at 100 grit and is probably half that now but still works great. 

I only blast glass at about 35 psi. You will want an air dryer/moisture catch and pressure regulator in line. You can get them cheap at harbor freight.  

[darcshadow 1,626]

It really is a lot of user preference. Different material produces different types of etches. The pressure is also dependent on the type of etch and material being used. Personally I like the lower grits for glass gives it more texture. But some don't like that look.