atrophius Posted July 1, 2009 Report Share Posted July 1, 2009 Hey guys, I am normally over in the hardbait section. I had a question about molds though, so I figured you guys use them more. I wanted to make a mold to make some hard bait blanks and I came across P.O.P mold term. What is that exactly? I tried to do a search, but I think most of the conversation was a little over my head. So what is p.o.p. and are there any "not so expensive" hard or soft molds to make some crankbait blanks? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
MTfishingrods Posted July 1, 2009 Report Share Posted July 1, 2009 POP is plaster of paris. Very inexpensive. Picks up detail very well. And yes can be used to make a 2 piece hard bait mold although most tend to use RTV. I have made some in the past. You just have to take into consideration your material your making your bait out of and the pop tolerances. Quote Link to comment Share on other sites More sharing options...
atrophius Posted July 1, 2009 Author Report Share Posted July 1, 2009 Ok, thanks, that clears up some things. I am aware of some of the release agents. This mold is going to be used for symmetrical blanks without any undercuts. So i am thinking that might work. I wanted to use some resin and the clear resins. How would one go about sealing and making a pop mold more durable? Quote Link to comment Share on other sites More sharing options...
MTfishingrods Posted July 1, 2009 Report Share Posted July 1, 2009 Usually the mold is sealed with 50% elmers glue 50% water mix. Brush on several thin coats and let dry in between. This makes a pretty durable mold. Durable enough to withstand multiple pours of 350 degree plastic. Some have also used thinned epoxy to seal it. Quote Link to comment Share on other sites More sharing options...
atrophius Posted July 1, 2009 Author Report Share Posted July 1, 2009 Great, thanks again for the information. I am going to give it a whirl. Will come back if I need some help;) Quote Link to comment Share on other sites More sharing options...
HJS Posted July 5, 2009 Report Share Posted July 5, 2009 "This mold is going to be used for symmetrical blanks without any undercuts." atrophius - Even so, you will need to be EXTREMELY careful not to allow any "undercuts" to form, otherwise your master will be locked in the mold. During the past couple of months I've been making .5oz to 1.5oz jigheads. bullethead style, from 2-piece PoP molds I made. Sinking the master into the first layer of PoP so its not locked in must be done with all the care of brain surgery. Quote Link to comment Share on other sites More sharing options...
