Q: Most of the time my etching comes out good, but sometimes I get marks outside the stencil. Does it just take a lot of practice or what am I doing wrong?
A: I am not sure which process your using, but I am assuming you’re using the sandblasting process (glassetchingsecrets.com/glasssandblasting.html). Abrasive from your sandblaster can get everywhere, even where you least expect it, so you need to either:
- Mask the whole glass off with tape.
- Or turn down the pressure or the amount of grit your using.
- Use a smaller nozzle to direct it at only intended areas.
Sometimes the abrasive will penetrate through the tape or get under the creases if I am blasting at higher pressures for sand carving (link). If this is the case, just double up the tape and make sure every crease or edge of the tape is sealed shut by pressing firmly. Also, overlap the tape about 50% over the other near outside of the stencil.
If your talking about acid cream (glassetchingsecrets.com/cream.html), this substance can get under the stencil if the adhesive isn’t sticking or if you didn’t apply it tight enough with a squeegee. The most important part of the stencil that needs to stick is the edges so the cream can’t get under. Make sure you clean the glass first with something like rubbing alcohol to remove any oils from your hands.
Share this on social media or email by clicking below!
