Hello, I got tired of paying for pre-punched carto's and having to order diff. ohm's and # of holes to have available for the diff. thickness of juices I have. Now I order a variety of diff. ohm non-punched carto's in bulk for under a buck a piece and punch them myself. I use a "Bullet Piercing Valve". It is available at some vendors for $15, I got mine on Amazon for $6. This does not distort the roundness of the carto and makes small holes. I like the small holes for thin fluids plus I like 2 holes with the holes on opposite sides with one higher than the other. For thicker juices I use a plastic head tack and stick it in one hole and twist until it's the size I want (for real thick juices I enlarge both holes). With this much control of my holes I never have a flooding problem. I'm looking forward to hearing other opinions and tips.
http://www.amazon.com/Supco-Bullet-...-catcorr&keywords=bullet+piercing+valve+bpv31
http://www.amazon.com/Supco-Bullet-...-catcorr&keywords=bullet+piercing+valve+bpv31
Last edited: