Hello, everyone! I've seen a lot of discussions about DIY MFLBs and I already figured out most difficulties with making it, the main two are choosing the screen and attaching it to the rails (it requires spot welding). What would you say about Volta? It has simplier design to make, but it uses 18650 3.7V battery, so the main problem is stainless stripe, that is used as a heating element. How could I find what type of steel should I use and what resistance is needed for optimal temperature. Maybe somebody has any suggestions?