I have been hotel-apartment card keys using these for years to spread epoxy and bondo type products. They beat the yellow spreaders especially when doing smaller areas or top coating for pinholes. We own student housing apartments so I get plenty to use. I was looking on amazon and saw they had them for sale - 100 for $10.
Here is a link. I have probably used about 100 so far on my build. Anything that can be done to get through the glass portion is a good thing. These could help!
https://www.amazon.com/gp/product/B06XX721LP/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Here is a link. I have probably used about 100 so far on my build. Anything that can be done to get through the glass portion is a good thing. These could help!
https://www.amazon.com/gp/product/B06XX721LP/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1