Hello, I read about those cantennas that were made from pringles and cofee cans and I was wondering if I can improve the reception of my network, i have Dr. Bott's ExtendAIR Omni Antenna http://www.drbott.com/prod/db.lasso?code=9141-QUSO
that is connected to my router so maybe if I will do a hole in a pringles box and stick the extendair omni antenna inside it will improve the reception?
Thank you.
sorry for my english
You most likely won't get that good a result (that antenna appears to be physically quite large). If you did such a modification will make the antenna more directional, which will not help if your wireless clients move about.
Having said that, Pringles cans are cheap so there is no harm in trying.
Extend network range 
Linear Mode
