Making a mold to pour weight forward spinners

I have a couple of weight forward spinners that a guy gave me 30 years ago that he designed. IS there way I can take these walleye lures, press them into a ceramic, or plaster of paris or rubber mold out of some material, so I can pour lead into the mold and reproduce what that man did long ago? Does anyone have any experience making a mold like this? I searched the net, but did not see anything.

Thanks,
Bruce

See Larry Dalhburgs making lead molds video?

https://huntforbigfish.com/

Do-it makes a blank mold that is designed so that your own design can be cut into the mold. This would require some machining skill or a steady hand with some power tools. They sell them a Cabelas. $39.00 I think.

Thank you. I think Larry Dalhburg has the materials I need.
Bruce