07-02-2013, 05:05 PM
Yes I have heard of pumps that you can program to a certain extent for intermittent pumping. Some were homemade by engineer types. There are even a few made commercially, but they are fairly expensive if memory serves. Like $400+ expensive. Intermittent pumping (at least for genitalia, I assume it is similar for breasts) produced the largest gains in size and were the safest in terms of not producing petechia or bruising both of which are damage to the capillary beds in the skin and would necessitate stopping pumping. There should be posts about these more advanced systems on newart.com, possibly in their archives. Honestly it's been quite a while since I frequented the site, so you will just have to try some creative searching.