THIS IS NOW A LEGACY POST:
For more in-depth, up-to-date content, please see this post: Thing-O-Matic MK7 PLA Set-Up and Troubleshooting (Likely MK8).
Printing PLA on a makerbot is a question that OFTEN comes up among Cupcake and Thing-O-Matic owners. I mean, it sounds like a great material, nice smell, natural glossy finish and the potential for VERY fast printing. When I started printing with Makerbots new MK7 I gave PLA a try to see if makerbot had managed to work some kinks out of their extruders. I'm happy to say that yes, you too can be printing with PLA in no time.