In the thread about homemade liquor bottle bongs someone posted an amazon link for diamond tip drill bits for only 7 bucks! I was going to make a bong, but the downstem I bought was too long! I'm pretty happy with how it came out, however. and it hits noice heres the link: http://www.amazon.com/gp/product/B000MOI9G6/ref=ox_sc_sfl_title_7?ie=UTF8&psc=1&smid=A3NUNNXXHUJDMF they are decent but the quality of the bit is obviously lower than the more expensive ones you'd find at Home Depot or somewhere like that
2 questions. You just put 1 hole near the bottom and 1 hole in the lid right? As the water drains it causes a vaccum and pulls the smoke down im assuming? Do you use a cork to plug the hole while you fill it?