IMG 4975 Seams were hot melt glued and then plasticine. Grip elevated on three pins.
IMG 4978 Looking at the cavernous space of the box, I feared there would not be enough liquid rubber to fill, so I packed in more plasticine to take up space.
IMG 4979 Luckily I didn't mix enough rubber to completely fill mold because I didn't think the grip would float, which it did. So I held it down with a lead ingot until the rubber set up enough that it wouldn't float, then mixed and filled the rest of the box.
IMG 4983 Mold filled and curing.