clemmy Posted February 10, 2014 Report Share Posted February 10, 2014 Hello all, I tried seatching, but Rtv is too short of a search string, and tubing brings up tube baits.. I make alot of baits, cranks, etc. but want to make some custom stickbaits I designed. I have a hard master. What I'm thinking of doing is taking some tubing ( like supersized aquarium tubing) and suspending the master with the nozzle of an injector attatched ( for a sprue). I pour the silicone, let cure. Then remove outer tubing. Cut a vertical slit in the silicone for bait removal. So left with a top pour silicone mold, with sprue matching an injector. I figure the slit for removal will function as a vent as long as I don't plunge the injector too hard. Now I know this wouldn't be the most efficient way compared to multi cavity, nor to the use of rtv, but planning on making severl, or enough to use up a batch of plastisol. Since I've never actually done this, I'm looking for suggestions or ideas to help the learning curve. Also, opinions on which RTV to use giver injection and method I'm planning for removal? Thanks all, Craig Quote Link to comment Share on other sites More sharing options...
Bassinfool Posted February 10, 2014 Report Share Posted February 10, 2014 It would be easier to use clay and push half of your master into the clay and then pour RTV on one half, let cure and then mold the other half with RTV. Make some alignment holes in the clay with a large dowel so you can ensure the two halves align each and every time. You could still use the tubing or even some clay to make the pour channel for the bait. There are a few videos you can find on YouTube to give you a better idea of how to do this. Quote Link to comment Share on other sites More sharing options...
clemmy Posted February 10, 2014 Author Report Share Posted February 10, 2014 Thanks for the reply, but there's enough fine detail, hat I'd never be able o get the clay out or the seond half. That's why I was going to try vertical injection 1 piece or a full round. Not efficient, but.. Craig Quote Link to comment Share on other sites More sharing options...
robalo01 Posted February 10, 2014 Report Share Posted February 10, 2014 It will work just fine. I've done a few like that. just be sure to leave a good sized chamber for the plastic to shrink down while cooling. I would use PVC pipe and keep it for a hard shell. Put talc powder on the exterior foe easy removal of the mold from the pipe. Quote Link to comment Share on other sites More sharing options...
Kajan Posted February 10, 2014 Report Share Posted February 10, 2014 Bassen is correct but you can also do kinda like you want also. I would add a spur sized material to your stick and hang that vertically in a rectangular box. Then after its cure you could just cut the side to remove. Quote Link to comment Share on other sites More sharing options...
mark poulson Posted February 10, 2014 Report Share Posted February 10, 2014 That is a really slick idea! If that works, are you going to align a bunch of the tubes, side by side, or just in a bunch held together by a bungee cord, so you can inject a lot of baits at once? Quote Link to comment Share on other sites More sharing options...
clemmy Posted February 10, 2014 Author Report Share Posted February 10, 2014 That is a really slick idea! If that works, are you going to align a bunch of the tubes, side by side, or just in a bunch held together by a bungee cord, so you can inject a lot of baits at once? Mark, Yes, If it works... A bungee would work, but what I had thought of is that the exterior diameter of each mold should be the same, so I was going to line up the molds and use a couple of scrap pieces of wood and clamp the row together... As far as the sprue, I was planning on using the nozzle of my injector as the sprue mold master, so that hopefully will be a perfect fit, allowing the injection. Thanks all for the ideas/tips! Quote Link to comment Share on other sites More sharing options...
mark poulson Posted February 10, 2014 Report Share Posted February 10, 2014 Good luck! Quote Link to comment Share on other sites More sharing options...
nedyarb Posted February 11, 2014 Report Share Posted February 11, 2014 There was a tutorial in the member submitted area, where someone made a mold out of PVC pipe! Quote Link to comment Share on other sites More sharing options...
nedyarb Posted February 11, 2014 Report Share Posted February 11, 2014 Here it is, it was in the hard bait tutorial, but I don't see why it wouldn't work with plastic!http://www.tackleunderground.com/community/index.php?/topic/11512-slip-molds-for-hard-baits/ 1 Quote Link to comment Share on other sites More sharing options...
mark poulson Posted February 11, 2014 Report Share Posted February 11, 2014 Thanks for posting that again. It's a great tutorial, and will work for soft plastic molds, too. Quote Link to comment Share on other sites More sharing options...
clemmy Posted February 13, 2014 Author Report Share Posted February 13, 2014 Great link for me! Thanks for finding it! Quote Link to comment Share on other sites More sharing options...
