by dahlberg » Thu Apr 16, 2015 4:57 pm
There are a couple of ways to do it. One, and the way some tubes are made is to create a mandril that you dip in hot plastic just like making a candle. After that you'd have to attach appendages.
The other would be to create a mold with a center "plug", that would create a hollow body.
You might want to begin with a slightly simpler design.
best
L
Larry Dahlberg
The Hunt For Big Fish