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I finally got around to doing this. The borosilicate 4 oz pouring cups work well for 3 & 4 color open pour molds. Wanting to keep the cups warm to extend open time, I molded this hi-heat sandy clay in a griddle with lid. Keeping the molds warm on the flat griddle really helps the colors blend slightly “fuzzy” instead of sharp defined lines. Just getting started; will update after more use.

I have a 1200 sqft shop with 4 separate rooms 1 room for pouring 1 room for powder coating and ovens for baking 1 room for tying my baits and 1 room for my office. I keep them at 70 degrees in the summer and 78/80 in winter it's all on solar. I have two older 1985/86 RCBS lead pouring pots 850 temp control I never have had any problem pouring. I had one rebuilt in 2018 and the other in 2021 both up grade temp controls but still are 850 temp.

There are lots on the market. My preference is Shimano. If you have a retail store nearby you should check them out and see what you like.

You nose is the best defense you have. If you can smell the plastisol, you need better ventilation and breathing protection. Fumes from this stuff is not safe to breath, no matter which formulation you use.

No concerns at all. I've been working in plastics for 35 years and pouring plastics for the past 14 and my lungs are still clear.( just had a physical this morning.) Just saying, take all the precautions possible so you can enjoy this hobby.

Joe, depending on how fast you use up the DN, most guys now go with the "tap the can" method of dispensing it and storing it. That's the only way to avoid having it harden in the container over several months. If you use this method, you dispense only what you need for a task. For most guys, that means brushing the DN on instead of dipping. You can't put it back in the can after dipping lures in it, so dipping wastes lots of expensive topcoat - but it's player's choice. After application of the DN, you want to hang the object up to drip off any excess finish. That avoids having the DN wrinkle paint. Do not use a lure turner as it will prevent excess from dripping off the lure and will often cause the DN to pool somewhere on the lure and cause the paint to wrinkle! Brush it on fast and heavy, then just hang it up. Ready to fish in about 36-48 hours. The solvent evaporates pretty fast off the DN but then the moisture cure process starts, which takes several days to complete itself. Before then, it is dry and slick but it still pretty fragile.