Reliable ABP for PLA

Make your good old Thing-O-Matic truly automatic! Here is mine at the Seattle Mini Makerfaire last weekend churning out bracelets: http://www.youtube.com/watch?v=nmmUECyz-ek
Both of my machines printed continuously both days without any major breakdowns, my TOM giving away ~70 bracelets and my Rep1 ~60 bearings.

Since switching to PLA, I hadn't been using my Automated Build Platform, since it doesn't stick so well to the old kapton belt. However, I finally went through and fixed up the design, and it now works better than ever.