
Battery Pick Help, Lead to Lithium
Got a Portable scene light, and wanted to upgrade the battery for longer power time by getting lithium batteries running them parallel. just need to know what specs i need to match and what the dos and donts are

Got a Portable scene light, and wanted to upgrade the battery for longer power time by getting lithium batteries running them parallel. just need to know what specs i need to match and what the dos and donts are
why are the threads so deep, i only need 2/3mm depth. using Thread creator script. anyone know how to change thread depth or if there's a way???
Selling Trading Cards, I want to be able to have Mail Letter shipping on lower end cards but on bigger end $30+ cards i want priority mail with tracking so its less likely to get lost/tracking is faster. Or if anyone has ideas what to do for higher end cards, just worried if i send it in letters it can ger damage/lost and im out of that money/card
Want to make a Thread/Helix around this revolve but cant, am i doing something wrong or do i have to do this a different way??