So I made my first molds last night, using an r4 mx blank,
The top of the cap came out fine, but when I did my stem side of the mold, the stem didn't completely form to its full length.
It didn't reach the height it should have. I think I put way too much petroleum inside the stem, and that limited the silicone from fully filling it.
Do you have any advice for making perfect stem molds?