DoubleT Posted February 3, 2017 Report Share Posted February 3, 2017 I have a silicone mold (AeroMarine 128) that I do open pours with. I want to modify the mold. In doing so I will need to put the slightly redesigned master back in the mold and add more silicone to it in order to make the changes. If I use a different brand silicone (Mold Max 30) do you think that I will have any problems with the two different types of silicone bonding to each other? Thanks Quote Link to comment Share on other sites More sharing options...
uttexas Posted February 3, 2017 Report Share Posted February 3, 2017 (edited) I've used Mold Max, but not the AeroMarine. I'd do a little experiment. 1. Cut off a 5 cc corner or edge (far away from the pour hole/vents/cavities) from the AeroMarine mold 2. Place it a very small 15-20cc tupperware container/cup (those tupperware containers for condiments might be a good example) 3. Mix 5 cc total of the Mold Max (silicone+catalyst per mold max instructions) 4. Pour the 5cc of Mold Max on top of the 5cc AeroMarine piece 5. wait unti the Mold Max is fully cured 6. examine how well they bonded Edited February 3, 2017 by uttexas 2 Quote Link to comment Share on other sites More sharing options...
DoubleT Posted February 7, 2017 Author Report Share Posted February 7, 2017 Sounds like a plan. Thanks Quote Link to comment Share on other sites More sharing options...
DoubleT Posted February 9, 2017 Author Report Share Posted February 9, 2017 The different brands of silicone bonded nicely together. Thanks 2 Quote Link to comment Share on other sites More sharing options...
uttexas Posted February 12, 2017 Report Share Posted February 12, 2017 Great! Glad it worked out Quote Link to comment Share on other sites More sharing options...
jcool3 Posted February 17, 2017 Report Share Posted February 17, 2017 i did that with 2 different hardness of mold making silicone. the molds warped badly. Don't think it's a good idea. 1 Quote Link to comment Share on other sites More sharing options...
DoubleT Posted February 17, 2017 Author Report Share Posted February 17, 2017 What was the difference in the hardness of the two silicones that you used? The two that I used were very close (28A to 32A). So far so good. I will keep an eye on it though. Thanks Quote Link to comment Share on other sites More sharing options...
jcool3 Posted March 30, 2017 Report Share Posted March 30, 2017 On 2/17/2017 at 9:35 AM, DoubleT said: What was the difference in the hardness of the two silicones that you used? The two that I used were very close (28A to 32A). So far so good. I will keep an eye on it though. Thanks Sorry, don't quite remember. the mold making silicones I use are pretty hard 50 - 60. Also I had one complete layer of one silicone on top of another. A small amount may not matter. Quote Link to comment Share on other sites More sharing options...
