Tumbler/Cup Holder Laser Engraving

Needed something to hold powder coated tumblers in place while etching them on my co2 laser. I do not have a rotary attachment, so i can only etch a single “face” of round things.

Designed this quickly based off some basic measurements of a generic 30oz stainless tumbler. Doesn't fit either of the two brands I had on hand perfectly, but it works. It did also work well for other types/sizes of cups. Basically anything round.