CNC FREAK Posted March 29, 2014 Report Share Posted March 29, 2014 i have made a new mold of a twister with a standard curly tail the body of the twister is about 1/2" in diameter and 2 1/2" long the tail is 2" in diameter , thickness 1/10" when injecting 2 colors with a blending block, the color of the body is ok but the color of the tail is completely mixed up. i have tried to inject fast, inject slow, doesnt work. also tried hot and thicker plastic my injectors are very hot this i not a multi cavity mold, only one bait (its a prototype mold) my blending block works perfect... for some reason i can not make a perfect 2 color laminate help.... Quote Link to comment Share on other sites More sharing options...
Baitjunkys Posted March 29, 2014 Report Share Posted March 29, 2014 is the bait essentric? Like a stick bait per say, same size top and bottom, The plastic has to be very very close to the same exact temp for both colors. Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted March 29, 2014 Author Report Share Posted March 29, 2014 the bait is completely round like a stick bait, nothing special to me. both sides of the mold are the same... will upload a picture tomorrow i guess the plastic temperature must be the problem i tried 5 times, heating some plastic in the microwave... none of the baits are ok shooting in one color and painting afterwords might be easier Quote Link to comment Share on other sites More sharing options...
Bassinfool Posted March 29, 2014 Report Share Posted March 29, 2014 There's no reason why that mold shouldn't shoot lams just fine based on what you have told us. If you don't have a thermometer you may want to invest a little money in one or buy some cheap candy thermometers so you can get those plastics really close to the same temp and see if that doesn't solve the problem. With everything being warmed up I think the plastic temps is where your problem lies like BaitJunky suggested. Quote Link to comment Share on other sites More sharing options...
Kajan Posted March 29, 2014 Report Share Posted March 29, 2014 Well, each colour will not necessarily be the same temp. Some colours are denser than others so you have to know what temp for what colour to get a good half / half colour. Quote Link to comment Share on other sites More sharing options...
Frank Posted March 30, 2014 Report Share Posted March 30, 2014 What are you using to laminate? Are your injectors singles or are they like the Twinjector? Although temp is a big thing if you re not getting even pressure all the way through the bait one color will lead the other and not give you a good laminate. Color temp are different but does not make so big a difference with temps in the 310 range. At this temp you should get a great laminate. Know the temps and 90% of laminate problems are gone the other 10% will be in execution. Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted March 30, 2014 Author Report Share Posted March 30, 2014 everybody thanks for the response/advice ! today i have done some shots, this time i used a digital thermometer and heated the plastic to 310 no succes so i heated another time to 320, same result tried 5 more times without a proper laminate enclosed a picture to see the result could it be possible that the "rounded ribs" in the mold are causing this problem? a few baits have a body that are quite ok but most of the baits have also a mixed body ! i'm using 2 single injectors with a blending block. its a single bait mold, i shoot in from the head of the bait, so i'm not using a multicavity mold and shooting from the side. As soon as i get this one to work i will make a multicavity model. last week i have injected another bait/mold with perfect result so my injectors/block are ok to me.The only way i get a perfect laminate is when i shoot in 2 steps, first color 1 with a plate, remove the plate and shoot color 2. Perfect bait but to much work... ow boy what is going wrong Quote Link to comment Share on other sites More sharing options...
Frank Posted March 30, 2014 Report Share Posted March 30, 2014 So the injectors are not together and can be pushed individually ? The principal is a simple hydraulic one, same viscosity pressure and it won't mix. Looking at the pics seems to be a pressure thing. Plus if you fill the injectors one at a time the first one is cooling while the second is hotter then there is a viscosity difference. I know it sounds easy but to get a good laminate there is lot of things going on that make it work. Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted March 30, 2014 Author Report Share Posted March 30, 2014 Hi Frank sorry i forgot to mention that my 2 injectors are combined. They can not be pushed individually. They have a thick wall so i pre-heat them. i suck up 2 colors at once, put these in the block and inject the mold. Works perfect but like you where saying, to get it perfect several things must be perfect. i'm using 2 microwaves for the moment, my thermometer is working to slow to measure each color fastso it's not that easy to get the 2 colors perfect the same temp i will start to set up 2 presto pots with a digital temperature regulator so i have perfect temp control i'm not sure but i think my plastic is to liquid. am i right that if the plastic is very liquid a laminate is difficult or not possible ? Quote Link to comment Share on other sites More sharing options...
Baitjunkys Posted March 30, 2014 Report Share Posted March 30, 2014 Ive shot them at 340+ plastic was like water. I would go hotter if it was me to try anyways. Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted March 30, 2014 Author Report Share Posted March 30, 2014 (edited) just shot some baits at 340+ same problem BUT i discovered that every time, after sucking up the plastic and moving them out of the plastic to the blending block, the injectors are dripping. Not a few drips, its a fine stream maybe this dripping is getting into the blending block and cause the mixed problem have done a test and as soon as i remove the injectors out of the plastic i hold the tip up and than quickly put them into the blending block. The result is much better but still not perfect. i think i need to solve this dripping problem and test again with several temps of plastic have checked you tube and this dripping seems to be normal Edited March 30, 2014 by CNC FREAK Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted March 30, 2014 Author Report Share Posted March 30, 2014 i'm going to start with making a new blending block not sure if this might be the cause but if will give it a try my block has an aluminum insert tube, the colors come together before the plastic gets into the mold i have made some nice laminates before but i will change it anyway Quote Link to comment Share on other sites More sharing options...
Frank Posted March 31, 2014 Report Share Posted March 31, 2014 Is it a smooth intersection? Any corners or ledges and it will start to roll and swirl. By the way you have some nice swirls going on. Again it is a hydraulic thing the less it has to move around the better it will be. Quote Link to comment Share on other sites More sharing options...
archery1 Posted March 31, 2014 Report Share Posted March 31, 2014 try to put injectors in block flow plastic then put the block on mold? like some one said a multi cavity mold is harder to get laminated baits with.. first ones looks good and they start to get worse Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted March 31, 2014 Author Report Share Posted March 31, 2014 Have just made my brand new blending block and it looks perfect ! the 2 colors channels are coming together in the mold and not in the blending block like my previous one keep my fingers crossed, tomorrow i'm going to test it !!! and i'm going to design some blending blocks for swirl effects...! Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted April 1, 2014 Report Share Posted April 1, 2014 Great idea bob! Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted April 1, 2014 Author Report Share Posted April 1, 2014 Bob, that sounds good and would be happy to give it a try i can make the block this week and post the results i have read your message several times but i dont get it can u draw me a sketch on a piece of paper and post it please? Quote Link to comment Share on other sites More sharing options...
fishon-son Posted April 1, 2014 Report Share Posted April 1, 2014 sorry but I like ur color swirls...hope u work it out Quote Link to comment Share on other sites More sharing options...
CNC FREAK Posted April 1, 2014 Author Report Share Posted April 1, 2014 have tested my new blending block today !!! problem solved ! have made some very nice baits...i'm happy Quote Link to comment Share on other sites More sharing options...
