Does epoxy warp/bend when curing?
Hello everyone.
I occasionally have the problem that the resin warps as it hardens. For example, coasters that I pour into a silicone mold warp, so that the coasters aren't straight; the edges, for example, bend upward.
I always mix and stir exactly as directed in the instructions. This is also the case with different manufacturers.
Why does the stuff warp and how can I avoid it?
I’ve got this more often than you say that the edges are higher then that’s almost slightly curved inwards.
I then always wait until it is cured and then “fill” again. Then it looks much more beautiful, e.g. with key tags etc.
Yeah, I do. But if the whole thing isn’t straight, so it’s really bad. And I’d like to prevent that directly.
Well, then I don’t know.
In the case of “pure” polymers, i.e. without fillers, this is quite possible. You could use a filled epoxide, because the appearance is lower, or mechanically reprocess it, by turning, milling. After curing, there is no longer much.