Most of the Vaseline had melted off, and I wanted a release agent on there, so I got out my can of expensive silicone lubricant and gave it a heavy spray.
I opened the silicone rubber package. The instructions said I should mix the part A first since some ingredients might settle to the bottom in shipping. It was thicker and harder to mix than I expected. And very messy. It wants to jump out at you and get onto your elbow and then into your ear. So I wore gloves and covered my scale with plastic wrap.
I put a mixing cup on the scale and zeroed it. A precise scale is crucial, because you are supposed to mix 100 parts of A with 3 parts of B (by weight.)
I poured in 300 grams of part A. It just seemed like the right amount.
