I’ve done a bunch of shotglasses for fund raisers, but ran into the 2" height limit for glasses larger. I found the article here where they lasered a stencil for a bottle, so I gave it a shot.
I lasered onto painters tape sheets bought on amazon. https://www.amazon.com/gp/product/B00HSKJZG0/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
I tried it two different ways
1.) Laser it off then peel the backing off.
2.) Reverse your image, peel the backing then laser it.
Both had plusses and minuses.
Do you have to worry about blasting through your masking? I have been wanting to try my hand at sand blasting but was unsure about what kind of masking to get. That blue painters tape looks like it would conform to almost any shape too.
I was recounting this conversation to a friend this morning and he commented that the hobby stores are stopping carrying these - an checking stock at both Michael’s and Joanns it looks like it may have already happened. It’s still available from Amazon, and a few stores might have stock (I only checked CA, VA, and KY), but if you’re looking for it locally you may have trouble!
Well sand blasting you still need your masking (template) and the entire rest of the glass should be covered with something to prevent any hazing from overspray. The method requires a compressor and a suitable nozzle. To make things even better add in a regulator and water trap as well as a cabinet to contain the dust and your grit. Even with a proper cabinet it’s messy and the grit does wear out and can be expensive, at least where I live.
The chemical is very simple to use. Just put your template on the glass, tape around the edges to insure you don’t get the paste anywhere you don’t want it. Apply, let sit, wash off, done.