This was my first attempt at a 2 pc mold for a Senko. I used Durham's Water Putty for the mix. I read a lot of posts and followed the instructions the best I could, but I'm not very happy with how this mold turned out. I ended up with a lot of air bubbles in the mold. I tapped the sides of the mold box and even held the mold box against the side of my vibratory brass tumbler to try to get rid of the air bubbles. I don't know if the mix was too thick, too thin, etc. As you can see in one of the close up pictures, there is even a crack along the length of one of the cavities.
Any suggestions would be greatly appreciated, thanks.