|I goofed. Here it is.
I use a slightly modified Lucanus jig for my mold. I press the jig into the modeling clay, then add some alignment holes.
Clay by Sinh Phun, on Flickr
I then pour some Bondo over it.
20180224_124921 by Sinh Phun, on Flickr
The alignment holes did not come out good, so I bodo it up and sand it down. I then drill out 4 alignment holes.
Bondo by Sinh Phun, on Flickr
Here's the 1st cast. It turn out quite well, and it needed some finishing.
casting by Sinh Phun, on Flickr
This will be for my personal use, after all it's a clone of a commercial product. I'll make my own design on my next mold.