beasty Posted March 28, 2012 Report Share Posted March 28, 2012 I seen a video on pouring molds using high temp silicone, has anyone here done it? I'm curious on how they hold up, and if someone can point me in the right direction on what I all need to give it a shot and where to buy the material, i would be forever grateful. Quote Link to comment Share on other sites More sharing options...
Paxamus Posted March 28, 2012 Report Share Posted March 28, 2012 I have done it and so far they hold up great. The beauty of it is that you can replicate almost any jig and change hooks as you want. Here are some of the ones that I have made http://s1057.photobucket.com/albums/t389/Paxamus/ i got my silicone from Jim at Sunbelt Materials- he is a great guy with fast shipping. I used the Rhodorosil v340. There are alot of nuances to making a mold and I would be glad to help with any questions. Quote Link to comment Share on other sites More sharing options...
smalljaw Posted March 28, 2012 Report Share Posted March 28, 2012 I have done it and so far they hold up great. The beauty of it is that you can replicate almost any jig and change hooks as you want. Here are some of the ones that I have made http://s1057.photobu...s/t389/Paxamus/ i got my silicone from Jim at Sunbelt Materials- he is a great guy with fast shipping. I used the Rhodorosil v340. There are alot of nuances to making a mold and I would be glad to help with any questions. Paxamus, not to hijack the thread but can you use the same mold material you use to make temporary inserts to aluminum molds? I have used all sorts of material to make weedguard fillers and such so I was thinking I could use it to fill weedguard slots and use wire weedguards. Quote Link to comment Share on other sites More sharing options...
Paxamus Posted March 28, 2012 Report Share Posted March 28, 2012 Shouldn't be a problem. You would have to take a jig and place it in the mold, then pour the silicone in that half( mold open at this point) to fill the weed guard hole. Then once dry repeat in the other half. cut a small slot for the wire weed guard and pour Quote Link to comment Share on other sites More sharing options...
beasty Posted March 28, 2012 Author Report Share Posted March 28, 2012 Your jigs look great, my plan is to make a 3 jig mold, how long does a side take to setup? and what was a ball park figure on the price to make one? I read some where Lego's work well for making a form,anyone try that? Quote Link to comment Share on other sites More sharing options...
Paxamus Posted March 28, 2012 Report Share Posted March 28, 2012 I use Legos for my mold boxes and they work great. With the small thing of Rhodorosil from Sunbelt you should be able to do it, but I would caution making a 3 jig mold. I would make three one cavity molds, because if you make a three cavity, the silicone makes the cooling of the jig take longer, so with three cavities it would keep your mold hotter longer and then have longer demold time and your silicone mold will stay hotter longer and lessen the life of your mold. I personally have made a two cavity and used it but was MUCH happier making single cavities and pouring one, then while it cools pour another. Plus you actually use less silicone. Setup is 24 hrs for a complete cure for each side. Let me know if I can help. Quote Link to comment Share on other sites More sharing options...
rhinojoe2014 Posted March 31, 2012 Report Share Posted March 31, 2012 How did you do the mold? Wait for it to set up a little and punch the jig in? Or did you suspend it in clay an pour the silicone? The mold looks good. I made some POP molds for a prototype jig and it turned out ok. I think silicone is in my future though. Quote Link to comment Share on other sites More sharing options...
ING Posted March 31, 2012 Report Share Posted March 31, 2012 How did you do the mold? Wait for it to set up a little and punch the jig in? Or did you suspend it in clay an pour the silicone? The mold looks good. I made some POP molds for a prototype jig and it turned out ok. I think silicone is in my future though. I've found great Paxamus's explanation in the: http://www.bassresource.com/bass-fishing-forums/topic/98960-some-of-my-molds-i-made-and-jigs-just-a-few/ Quote Link to comment Share on other sites More sharing options...
Paxamus Posted March 31, 2012 Report Share Posted March 31, 2012 Sink your mold halfway into modeling clay, then build a mold box around the area you want to pour, place your keys. Measure your silicone, mix, then pour the first half. Wait 24 hrs, then demold, clean up any overpours then place jig in silicone mold from the day before and repour the other half. If you write down the amount you used for the first half you can eliminate that step and just pour. Quote Link to comment Share on other sites More sharing options...
ING Posted March 31, 2012 Report Share Posted March 31, 2012 (edited) Are there a modeling clays that after hardening could be used like molds instead of silicone? Thanks Edited March 31, 2012 by ING Quote Link to comment Share on other sites More sharing options...
Paxamus Posted April 1, 2012 Report Share Posted April 1, 2012 Not that I am aware of, I think that the heat of the lead would make the clay crack. Quote Link to comment Share on other sites More sharing options...
ING Posted April 1, 2012 Report Share Posted April 1, 2012 (edited) Not that I am aware of, I think that the heat of the lead would make the clay crack. Thank you. One more question: why did you choose V340 from long list: V-240, V-243, V-249, V-252, V-252 Diluent, V-330, V-340/CA-35, V-340/CA-45, V-340/CA-55, V-341,V-360, V-3038, V-3040, RTV-1556, RTV-1597...? Some of them have a better tempereture range[-55 to 249 (-65 to 400)] vs. [-50 to 150 (-58 to 302)] of V340. Thanks again. Edited April 1, 2012 by ING Quote Link to comment Share on other sites More sharing options...
Paxamus Posted April 1, 2012 Report Share Posted April 1, 2012 (edited) I wasn't sure looking at them if they would even hold up to leads high temps, so I called the owner, Jim Dailey. I told him what I was going to use the silicone for and he told me to use that one. Others may work, but that's the told me to use and dlaery on this website had used v330. So that helped Edited April 1, 2012 by Paxamus 1 Quote Link to comment Share on other sites More sharing options...
robbor Posted June 12, 2012 Report Share Posted June 12, 2012 Be aware there are different types of silicones. i made molds out of heat vulcanized silicone used in spincasting machines. http://www.contenti.com/products/spin-casting/179-509.html 1 Quote Link to comment Share on other sites More sharing options...
tbrinlee Posted June 12, 2012 Report Share Posted June 12, 2012 I have also made some lead molds usign silicone. http://www.tackleunderground.com/community/topic/24486-2-oz-squid-jigs/ Tony Quote Link to comment Share on other sites More sharing options...
rhahn427 Posted June 12, 2012 Report Share Posted June 12, 2012 Try this http://rtvmoldmaking.com/cgi-bin/p/awtp-product.cgi?d=rtv-mold-making&item=50768 Quote Link to comment Share on other sites More sharing options...
wilfish4774 Posted July 17, 2012 Report Share Posted July 17, 2012 I beleive that smalljaw is on to something using the silicone as an insert in aluminum molds. Many times I like to use a smaller hook size and of course the mold eye cavity is always too big and placement is tedious and at times inconsistant. However it seems reasonable that with a silicone insert in the mold eye cavity one could use any hook size with consistant depth placement of the eye. Good idea smalljaw. Quote Link to comment Share on other sites More sharing options...
weighinalimit Posted July 26, 2012 Report Share Posted July 26, 2012 I beleive that smalljaw is on to something using the silicone as an insert in aluminum molds. Many times I like to use a smaller hook size and of course the mold eye cavity is always too big and placement is tedious and at times inconsistant. However it seems reasonable that with a silicone insert in the mold eye cavity one could use any hook size with consistant depth placement of the eye. Good idea smalljaw. I've been doing this with Do-It molds for years...use high heat silicone gasket-making goop that Permatex sells in tubes for automotive gasket use. Works like a charm & if you want to remove it later it comes out pretty easily with a little work. Quote Link to comment Share on other sites More sharing options...
tbrinlee Posted July 31, 2012 Report Share Posted July 31, 2012 The past week I have been using some graphite mold release spray Blaster 5.5 oz. Graphite Dry Lubrican P/N 8-GS from Home Depot. Sprayed it on, let dry for about 10 minutes and bushed off the excess. High Temp says 850F and the 10, 1.5 oz heads I did all did well. Tony Quote Link to comment Share on other sites More sharing options...
tbrinlee Posted July 31, 2012 Report Share Posted July 31, 2012 The past week I have been using some graphite mold release spray Blaster 5.5 oz. Graphite Dry Lubrican P/N 8-GS from Home Depot. Sprayed it on, let dry for about 10 minutes and bushed off the excess. High Temp says 850F and the 10, 1.5 oz heads I did all did well. Tony Should have added Home Depot is where I got it, also online... http://www.homedepot.com/h_d1/N-5yc1v/R-202597501/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=8-gs&storeId=10051&relatedSearch=8-gs#.UBcs8y4bBFk at US$4.27 Quote Link to comment Share on other sites More sharing options...
tablerocktackle Posted August 3, 2012 Report Share Posted August 3, 2012 I have done it and so far they hold up great. The beauty of it is that you can replicate almost any jig and change hooks as you want. Here are some of the ones that I have made http://s1057.photobu...s/t389/Paxamus/ i got my silicone from Jim at Sunbelt Materials- he is a great guy with fast shipping. I used the Rhodorosil v340. There are alot of nuances to making a mold and I would be glad to help with any questions. A question if you don't mind....Once you had poured the first half and let it cure... did you have to coat with a mold release to keep the second half from sticking to it? Thanks....Mike Quote Link to comment Share on other sites More sharing options...
Paxamus Posted August 3, 2012 Report Share Posted August 3, 2012 I shoot a quick shot of a white grease over it and wipe off as much as possible before pouring the second half. I have used thinner stuff but have had issues with bubbles. The grease seems to stay slick even after it has been wiped off. Quote Link to comment Share on other sites More sharing options...
mafloyd88 Posted September 2, 2012 Report Share Posted September 2, 2012 How many single cavity molds could you expect to get out of the 2.75lb Quart Kit? Quote Link to comment Share on other sites More sharing options...
tbrinlee Posted September 2, 2012 Report Share Posted September 2, 2012 Depends a lot on the jig weight. A lot of the mold is heat sinking so the mold isn't easily damaged. I Like about an inch around the features if they are more than One ounce. Tony Quote Link to comment Share on other sites More sharing options...
mafloyd88 Posted September 2, 2012 Report Share Posted September 2, 2012 I was thinking of jig's in the 1/4oz to 3/4oz. Could you expect to get 2 molds? 4 molds? 8 mold? I don't have any idea how much material the 2.75lb Quart kit contains or how many molds it might make. Say the molds are 4" x 4" and 2' thick? Quote Link to comment Share on other sites More sharing options...
