After casting keycaps over a couple of months, I’ve finally finished my first bottle of resin. Now I’m trying out a different brand and realize not all epoxy resins have the same properties. I started with Unicone Art a couple of months ago and now am using Dr Crafty.
Here’s a comparison of the resin brands Unicone Art (left) and Dr Crafty (right):
|Epoxy Resin Brand||Unicone Art||Dr Crafty|
|Cure Time||18 hours – hard enough to work with, 24+ hours – full hardness||24 hours – still very pliable, 30 hours – hard enough to work with|
|Casting||Great for casting||More viscous and will not conform to certain complex molds|
|Clarity||Clear but small trapped air bubbles will make the keycaps appear cloudy||Crystal clear and fewer air bubbles|
|Odor||I couldn’t detect anything||Strong chemical smell from the hardener|
If you look closely at the photo above (and ignore the different dye colors), there are a lot more tiny air bubbles in the left keycap than the right. I let all resin degas before casting, but it seems like for Unicone Art, the air bubbles have a harder time making their way out.
I prefer strongly Unicone Art for its casting property and turnaround time. However, Dr Crafty is visibly clearer.
Maybe I’ll try to cast the bottom pieces with Unicone Art and the clear top with Dr Crafty. Will report back.