Joelh831 Posted May 31, 2018 Report Share Posted May 31, 2018 Hi all was wondering if anyone on here knows what exact materials are used to make hard composite molds for open pours. I've used silicons and they work great but wanted to try making some composite hard molds like the ones made by a Ukraine company on eBay. That's Quote Link to comment Share on other sites More sharing options...
MonteSS Posted May 31, 2018 Report Share Posted May 31, 2018 I think those might be some sort of stone. Maybe artificial. I made some from fiberglass resin and they work well. 1 Quote Link to comment Share on other sites More sharing options...
Bass-Boys Posted June 1, 2018 Report Share Posted June 1, 2018 12 hours ago, CNC Molds N Stuff said: I believe those are CNC machined out of a countertop material similar to Corian. Bob, Have you ever tested cutting any of that material with your CNC ? 1 Quote Link to comment Share on other sites More sharing options...
Jig Man Posted June 1, 2018 Report Share Posted June 1, 2018 Like Monte I have used fiber glass resin to make open pour molds. Quote Link to comment Share on other sites More sharing options...
Joelh831 Posted June 1, 2018 Author Report Share Posted June 1, 2018 18 hours ago, MonteSS said: I think those might be some sort of stone. Maybe artificial. I made some from fiberglass resin and they work well. Quick question is their a clear resin that you would recommend that i can just add color to. Thanks. Quote Link to comment Share on other sites More sharing options...
Joelh831 Posted June 1, 2018 Author Report Share Posted June 1, 2018 18 hours ago, CNC Molds N Stuff said: I believe those are CNC machined out of a countertop material similar to Corian. Have another question is their a brand that’s inexpensive that you might know about. I’ve seen some composite molds being sold for a very low price way cheaper than silicone molds. I’ve seen a company called moose ridge molds selling some composite molds and their super cheap and was hoping to find out what type of materials was used to make those. Thank you. 1 Quote Link to comment Share on other sites More sharing options...
Cami Posted June 1, 2018 Report Share Posted June 1, 2018 The raw material of stone mold should be epoxy resin added with marble powder and yes, the oversize of raw mold is machined by a CNC machine to obtain the thinest details. In Germany, some guys are realizing molds in corian with CNC machine and 3D printers, too. On the base of my personal experience the epoxy resin sometimes can dissolve a soft bait while you are trying to clone it. I really prefer the RTV2 silicone and with right insert and wall thickness you can obtain a stiff injectable 2 halves mold. Bye Cami Quote Link to comment Share on other sites More sharing options...
OIR Posted June 2, 2018 Report Share Posted June 2, 2018 epoxy resin...! taken from : https://vk.com/luresoftfishing 1 Quote Link to comment Share on other sites More sharing options...
OIR Posted June 6, 2018 Report Share Posted June 6, 2018 made a terst run of a stone mole..but too many ribs make it vulnerable but made a copi of the top and took 5 shots of plastisol..works ok 1 Quote Link to comment Share on other sites More sharing options...
Joelh831 Posted June 9, 2018 Author Report Share Posted June 9, 2018 On 6/2/2018 at 5:52 PM, OIR said: epoxy resin...! taken from : https://vk.com/luresoftfishing Oh wow that looks amazing if you don't mind sharing what brand of epoxy resin did you use. Also how did you make the mold. Was it poured over a silicone bait or CNC thank you Quote Link to comment Share on other sites More sharing options...
Joelh831 Posted June 9, 2018 Author Report Share Posted June 9, 2018 On 6/6/2018 at 5:16 PM, OIR said: made a terst run of a stone mole..but too many ribs make it vulnerable but made a copi of the top and took 5 shots of plastisol..works ok This another awesome mold what brand of materials did you use to make the stone mold also the what type of materials or brands was used to make the blue and clear/white mold and process. Sorry for all the questions but this is exactly what I've been looking for and ines again they are amazing how great they look. Thank you you very much for sharing Quote Link to comment Share on other sites More sharing options...
OIR Posted June 9, 2018 Report Share Posted June 9, 2018 (edited) well the white mold is from ebay ...the blue is leftover silicone the clear is epoxy https://www.ebay.com/itm/Soft-Plastic-Lure-Mold-Bait-DIY-Do-It-Moxi-Authent-X-Grub-Twister-Worm-Fishing/192315222466?ssPageName=STRK%3AMEBIDX%3AIT&var=492260024013&_trksid=p2060353.m2749.l2649 https://www.ebay.com/itm/The-Ultimate-Crystal-Clear-Cast-Resin-2-Kg-Epoxy-Resin-1-Harder-Transparent/222885311224?hash=item33e4fff2f8:g:SxgAAOSwxo9aqoRE but im on it.. Aluminium oxide powder + epoxy the first clear one is now stone hard..so in 4-5 days time I can test run the white one..its more simpel. but I think I can copy the ribber one if I use vaseline and not som liquid wax Edited June 9, 2018 by OIR Quote Link to comment Share on other sites More sharing options...
SlowFISH Posted June 11, 2018 Report Share Posted June 11, 2018 I think Smooth-On makes some aluminum filled resins... I've been interested in them but the cost sq/in vs. other materials isn't even close to being reasonable unless you only want to make 1 mold and/or back fill most of the mold with something more cost effective. I machine molds from Urethane Resin - Freeman 5169/5179 Foundry Tooling Board - used for making thermofom molds/stuff like that. It works reasonably well... but can/will distort from heat as it gets hot.... so you really need to clamp it well. Advantage is as Bob alluded to... you can machine it very easily - even a novice like myself can cut thin ribbed/detailed parts with really small mills and get nice results without breaking tools.... no flood or coolant to mess with and you can take some deep cuts with a small machine (TAIG) compared to aluminum. I wouldn't recommend for production as with any resin mold - much longer to cool down and the clamping issue... but it's somewhat reasonable cost wise compared to aluminum. Perfect for a hobbyist/novice machinist. (And I use machinist lightly!! LOL!) Real interested to see hear how the epoxy/aluminum combo works... if it can pull heat from the pour quick - that would be nice - as it's the one negative of the resin based (2 part) molds I hate. J. Quote Link to comment Share on other sites More sharing options...
OIR Posted June 17, 2018 Report Share Posted June 17, 2018 (edited) made 6 molds. 4 molds made out of 100G epoxy + 50g Aluminium oxide powder 2 mold made of just 130g epoxy the 2 molds of pure epoxy was just...bad but.. the 4 Aluminium oxide works great. I see if I get the time to test em more...and if it works I post how to in Homebrew Tools. (and yes it pull heat from the pour quick) Edited June 17, 2018 by OIR Quote Link to comment Share on other sites More sharing options...
labtrainer18 Posted June 21, 2018 Report Share Posted June 21, 2018 On 5/31/2018 at 5:14 PM, Joelh831 said: Hi all was wondering if anyone on here knows what exact materials are used to make hard composite molds for open pours. I've used silicons and they work great but wanted to try making some composite hard molds like the ones made by a Ukraine company on eBay. That's I use Hydrocal, a powdered plaster that is WAY less expensive than hard, mold-making silcone. It's 3-5 times harder than plaster of paris, and brushing on two coats of glaze gave me a very glossy surface that releases well. Hydrocal is a bit tricky to mix, but if you search for it on YouTube, there are two EXCELLENT how-to videos on the process. (Follow it to the letter!) Bags of 5 lbs. to 25 lbs. are widely available on amazon.com; my first 5-lb. bag cost me just $15. Hope this helps Quote Link to comment Share on other sites More sharing options...
Roger Linnell Posted June 22, 2018 Report Share Posted June 22, 2018 I've been using Hydrocal and Ultracal too, hardest plaster you can buy, here's a couple grubs from my molds Quote Link to comment Share on other sites More sharing options...
labtrainer18 Posted June 22, 2018 Report Share Posted June 22, 2018 16 minutes ago, Roger Linnell said: I've been using Hydrocal and Ultracal too, hardest plaster you can buy, here's a couple grubs from my molds GORGEOUS! What's the difference between Hydrocal and Ultracal? Should I be using Ultra? Quote Link to comment Share on other sites More sharing options...
Roger Linnell Posted June 22, 2018 Report Share Posted June 22, 2018 3 hours ago, labtrainer18 said: GORGEOUS! What's the difference between Hydrocal and Ultracal? Should I be using Ultra? I can't remember what the difference is, I've also used Tuffstone from the same company Quote Link to comment Share on other sites More sharing options...
Joelh831 Posted June 22, 2018 Author Report Share Posted June 22, 2018 Great baits and molds. But would you happen to have a link to the website where I can purchase this materials. Thanks Quote Link to comment Share on other sites More sharing options...
SlowFISH Posted June 22, 2018 Report Share Posted June 22, 2018 This place in in NYC.... but atleast you can read up on the products... I've used the ultracal.... it's great stuff.... you just have to mix it with a sifter slowly - isn't really a pain - but obviously no as easy as standard POP. J. http://shop.sculpt.com/usg-ultracal-30-25lb-box.html http://shop.sculpt.com/usg-hydrocal-white-25lb-box.html Quote Link to comment Share on other sites More sharing options...
