J. Phil Thien's Projects

Hi, I'm a new member from Sydney, Australia.I'm new to woodworking, I started a class 2 years ago and discovered my new obsession. I was using a workshop vac for dust extraction. To protect the vac I used a 15 litre bucket with a lid with 2 pipe entries, the outlet had a simple filter cover. A simple but effective separator. I've now upgraded my machines and the dust extraction needs to keep up. I've purchased a Carbitec 1hp dust extractor  air flow is 500cfm. This machine is supplied with a needle felt filter bag, I replaced with a pleated filter cartridge( this should increase performance markedly). My new task is to build a separator to catch the first line of dust and chips. My first question is when constructing a Thien separator, what dimensions are required to accommodate the dust extractor with a 100mm inlet. To complicate matters further My space is limited, I am happy to have a small separator( which would require more frequent emptying, as long as it could handle the air volume)