resize a resin silicon mold? This topic has 1 reply, 1 voice, and was last updated 4 years, 4 months ago by Katherine Swift. Viewing 1 reply thread Author Posts December 14, 2020 at 5:44 pm #91265 CheriGuest I have a resin mold but need to “resize” it smaller. Can I use silicon caulk as a barrier? Other suggestions? December 14, 2020 at 10:52 pm #91271 Katherine SwiftKeymaster Hi Cheri, while I haven’t done this, I think silicone caulk is a good thing to try. Author Posts Viewing 1 reply thread The topic ‘resize a resin silicon mold?’ is closed to new replies.