RE: Pyrex Cups , Plastisol, Pouring Lead
Well some more advice before you get started. Saftey First!
1. Never use a cracked, chipped or altered pyrex cup to heat up your plastisol with. This is not safe if there is any doubt throw it out! Buy a brand new one.
2. Pyrex cups do break From my experience I was using one which was fairly new and one day it just cracked in half, out of the blue after I had heated my plastic, right after reaching into the microwave. I dont know what happened maybe it was defective.
3. Research, the basic, find out, read alot of information on how to safely pour plastic baits, or lead I see alot of videos of inexperienced people on YouTube disregarding just simple saftey precautions. Not using eye protection, no gloves , no long sleves, no pants including pouring lead inside there home while wearing shorts or flip flops or no shoes WTF! pouring while using No respirator or proper ventilation. Yes making your own soft baits and lead weights or lures can be fun and rewarding but it can also be dangerous and toxic if saftey precautions are not followed. Gather all your items before you get started & Be safe dont disregard this important point.