TonyInVa February 7, 2020 Share February 7, 2020 I have a kalk stirrer that is leaking where the acrylic tube meets the acrylic base plate. I tried just applying more silicone, but that didn't work. I would like to separate the base plate from acrylic tubeso that I can reseal it. I used a heat gun to remove what silicone I could but could not separate the two. The heat softens the silicon. I am afraid to heat it any more, as I don't want to warp the acrylic. Any suggestions would be appreciated. Link to comment Share on other sites More sharing options...
epleeds February 7, 2020 Share February 7, 2020 U got a pic of where it’s leaking from Link to comment Share on other sites More sharing options...
Origami February 7, 2020 Share February 7, 2020 Silicone does not bond to acrylic. You need to repair the solvent weld between the two pieces. Instead of silicone caulk, get a tube of Weld-on 16 (medium bodied acrylic solvent cement) and run a bead all along the bottom joint. The solvent in the cement will soften the base and the tube, and the solids in the cement will effectively braze the joint to seal it up.Make sure the surfaces are completely clean and dry before applying the Weld-on. Link to comment Share on other sites More sharing options...
TonyInVa February 8, 2020 Author Share February 8, 2020 I got it to stop leaking. if it continues down the road, I will try this method. Link to comment Share on other sites More sharing options...
davelin315 February 9, 2020 Share February 9, 2020 As Tom mentioned it will not bond and will come loose. Silicone is designed to bond to glass and not plastics. My advice is same as Tom’s, remove all of the silicone and apply weldon. You will be happier in the end. Link to comment Share on other sites More sharing options...
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