after seeing a few people building there own box mods i decided to give it a go so went to mod makers site and ordered all the stuff i needed which came today thanks again to @
Seedy for posting so quick. so after an hour or so i had a single 18650 box mod fitted with a mosfet with a 15k resistor springloaded fdv 510 and a 16 mm switch still need to heatshrink the mosfet but other than that it works which is good. here just a few pics of what i done. i never got a modmaker sticker so just used what was there lol