The old bonding still holds well. However, it has become particularly brittle at one corner. I removed the mutilated mass and would like to seal with disc sealant. I have some experience with silicone and acrylic. However, this is hardly helpful with the sealing compound of Würth with the short application advice. What tips do you have for me, which leads to success. So far it is only a “battale”. No networking agent is used. How do you get a smooth surface? that the whole mass comes along at the time of tapping off the supernatant? Does it make sense to stick off? Thank you for your interest in my problem.