I’ve known for a while that acrylic plus alcohol is supposed to lead to cracks/hazing, commonly referred to as “crazing”. I’d never actually seen it until now.
Here’s a cut piece of extruded acrylic.
Now I placed alcohol ink on it, thinking I might be able to get a stained glass effect. Like I said I had never seen crazing before, so I wondered if it were a myth. After about 20 seconds I noticed the cracks starting in from the edges.
The cracks were growing, slowly enough that I couldn’t actually see them propagating… but maybe I could? It was almost like I couldn’t believe my eyes. This is after it dried, the cracks may still be growing, I’m not sure.
I’m not sure if the fact that this is 0.118" extruded made any difference. I will say that the cracks seem to be starting from the overburn flashback spots, which makes sense in a way, the cracks will probably originate at weak spots.
So, uh… I don’t know who might need to see this, but there it is.