exoray
Master Member
Interesting...I've honestly never used any that didn't. I guess I'll amend that to "if you're using a typical hobbyist brand, it should be OK." :lol
The stuff I regularly use has about zero bonding to itself normally... I have made numerous small 2 part molds without release between the layers, and it's like pealing up a sticker to separate the two halves...
The only way I can get it to bond to itself is to add a cure accelerator, don't know what that changes but it increases the bond... But it's hairy stuff to work with in small amounts, one drop or two in a small mixture can take your 12 hour silicone down to a few minutes...
To the best of my knowledge Smooth On does bond to itself...