the chuff should be printed at 100% for the sigelei tai ji, and 103% for the stillaire. i printed the box and lid at 105% to be sure parts fit, but u may still need to shave the lid edges a hair. i got the 510 connector from varitube.com and then battery holder and button from amazon.com . the battery case is setup for parallel. use chuff at your own risk, it has been brought to my attention that its probably not the best idea to use it for vaping. also be sure to use a high amp switch, i did not, but plan to change that soon. EDIT: i added the .sldprt files so that these parts can be edited. i honestly have nothing else to really improve on these. i have been using this box since i have printed it with no issues. i have printed a few different lids with custom lettering and sometimes a finger hole to get it open. have fun! this is no longer a work in progress!orient the case parts on their back, repetier host said that they were not manifold but i had printed them anyway and they came out fine. the chuff should be printed mouthpiece up