QUOTE (chromecarz00 @ Jun 7 2009, 06:00 PM) QUOTE (delSol_si @ Jun 7 2009, 02:59 PM) QUOTE (alive @ Jun 7 2009, 02:38 PM) QUOTE (chromecarz00 @ Jun 7 2009, 05:03 PM) QUOTE (K1024 @ Jun 7 2009, 09:28 AM) QUOTE (Vladimir @ Jun 7 2009, 06:34 AM) QUOTE (Sonthert @ Jun 7 2009, 03:34 AM) A 1/2" hole draws more than twice as much air as a 1/4" hole. Its from the surface area/area ratio. The edges "drag" a static layer, the smoke actually "skates" across this static layer. The larger the volume is in relation to this static layer, the more flow you get. So then 2 1/4" holes would be the same as one 1/2" hole. But what if you fit three? you suck at math. Eric just said that one 1/2" hole draws more than twice as much air as a 1/4" hole. 3 would maybe allow more airflow, but 3 would take up more space... How does he suck at math? 2 * 1/4 = 1/2 I may end up making one of these bowls next week, a buddy of mine works in ceramics. Im also working on another mini phunnel, but no promises there. Wont be a group buy, ill just have a few made and sell them. 2 * 1/4 = 1/8. Just saying. ;] and the 1/2 would still get more airflow according to eric. Now if you put 3, 1/4 inch holes.... why not just put a 3/4 inch opening instead and get more airflow? Actually 2* 1/4 does = 1/2 .... (1/4)^2 or (1/4)x(1/4)= the (1/8) thank you for proving me right, but doesnt 1/4 ^ 2 = 1/16? not sure why i was thinking squared....silly me