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Another Rtv Question
6 replies to this topic
Posted 12 December 2009 - 10:40 AM
Is it possible to mode the lip into your clay model and thus make your lip out of RTV with the lure body? Will a RTV lip hold up as well as a lexan lip? Or should I make my RTV modes without the lips and cut the body and put in a lexan lip like we do with a wood lure?
Posted 12 December 2009 - 10:52 AM
A lip can be built into the mold BUT, it will need to be reenforced or it will break off the casting easily.
Posted 12 December 2009 - 10:58 AM
So how do you reinforce it? Make it thicker than the orginal or put a couple pieces of wire through it?
Posted 12 December 2009 - 12:27 PM
I used wire but there are other things i.e. circuit board which will make a stout "spine".
Posted 12 December 2009 - 07:43 PM
Never thought about sticking a piece of circut board in the mold. That definately would stregthen it!
Posted 13 December 2009 - 06:50 AM
How did you manage to place the wire for the eyes in the mold? My guess is that you use an 1 part mold for foam. I did some molds with the prototype having the eyes on it but somehow never got good results in placing the wire correctly inside the mold, 3 out of 10 got bad results with the eyes placed wrong, I think I might have moved the wire inside the mold while I was pouring the foam.
Now I managed to do a top class mold with a thru wire chanel and a hole on the belly, also carved details and a hole in the mouth for the lip to place in, it looks great, I can't wait to see how the pouring will turn out since the mold is filled with all these tricks
Posted 13 December 2009 - 09:32 AM
That Bomber Type was made from 16lb foam in a 2 part Bondo mold. All eyes and hangers thru wired and are from one ss harness.
I make my molds with metal place holders (nails) for the harness, built in so the harness is locked in place.