ive been making homemade ones for a while, but i used eveything ive learned and put it into this. its pretty ghetto in its construction, but it milks like crazy and the hits r sooooo smooth. ya i did use a sharpie for the down stem in the main chamber, i drilled about eight small tiny holes in it and it bubbles great. the bowl is obviously a socket and i used the metal part of my old ipod headphones for the screen