I'm using Mold Max 60, a two compound hightemp silicon 294C
So far the nozzle molds went ok, but I did wrong the mix ratio and it took 48h to cure.
Also indeed the mold design needs adjustments to make it easier.
I'm in between 3 proyects so I'm going slow, finishing other stuff that I need more.
Also this two compounds (specially B blue) it's really abrasive and left the tip of a finger with a numb sensation for a full day, and the A stuff I don't know how breaks my gloves. So I need to get new, much better, gloves to handly this sticky red stuff.
Also I was wrong this stuff will last much more than a week when open, but since I never used this stuff I didn't knew.
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rowiac 53
I've been playing around with a similar idea to insulate a custom fan duct (PLA) from the heater block. High-temp silicone (the red stuff) is needed to withstand the heat. Normal silicone is good for about 205°C continuous, whereas the high-temp silicone will withstand 300°C+.
In the US, I can find the high-temp one-part silicone in a tube for 5USD. I did not do a lot of searching but I haven't seen high-temp 2-part silicone that is readily available (and that cheap). That seems like it would be easier to use.
neotko, did you look in an auto parts store for high-temp (red) silicone? Permatex is a common brand in the US, although I'm using J-B Weld brand.
Permatex 81160 High-Temp Silicone Gasket Sealant
J-B Weld Hi-Temp Red Silicone
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