Hello in the video I will tell you how with 5 kg of silicone for forms I had a loss of 500g.
Silicone remained on the walls in the cans, since I did not fill everything at once, but in parts.
In the video, I talk about polyurethane for forms, or rather, about a polyurethane stamp for concrete.
Video review of what kind of polyurethane for stamps I use.