mixing

Hello, my name is Wil. I have a question about volume versus weight when mixing various resins. I understand the volume method and recognize that volume is routinely used with many resins, especially the epoxies, but am wondering about mixing by weight. It seems to me that "back in the day - yes...

I just started laying up a project using Orca 200 polyester resin and realized I won't have enough resin to get as many layers as I need. Its Friday and my local Fiberlay shop is closed on the weekends so I can't get more of the Orca 200. There are a few boating shops open on the weekend (like...