Here is a link where two first time cells were done. I had refrained from posting it earlier in hopes you would look at the more proper posts on making and using a cell, and you may have ran across it already. The credit goes to bmgold2 for starting it as well as those who chimed in and helped us progress with them. I wouldn't use the link as a cure all for building a cell, but as a means of understanding there can be some very slight modifications to save a buck or two when getting started. Please keep in mind they can hurt you, and proper gloves are a necessity when using one. Be very aware of proper ventilation as well. I still have mine in the original configuration, but I now have two bowls a bit larger than the first one with better sealing lids.
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=86&t=19971
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=86&t=19971