- Feb 25, 2016
I had similar trouble, looked exactly the same. I would try my best to fill both sides separately, then sandwich them together and put a small weight on top while it dries. There would be some overflow so do it on a disposable surface. Molds should in good practice be designed with pour spouts and over flow holes to get perfect amount. then the spouts are trimmed off afterwards. But this can be difficult engineering for hobby molds we make.