I would have edited my previous post to include this link but I see that you are online. The original thread on purging a cart was started by the participant who developed the purging technique, Grandad35. The link for it is http://www.nifty-stuff.com/forum/viewtopic.php?id=311&p=1 . My post on that thread, #21, has a picture of my ink cart "enema tube" and drying technique. The posts above it show the use of a spray attachement to a sink faucet that someone was using that is very simple. If it would work for you I'd try it. The tubing really has to fit the outlet port of the cart tightly so that a small amount of water pressure goes directly into the cart. Works very fast.