here is my problem. My printer can print ABS fine, when I load my PLA in it extruders for about 30 seconds then jams in the hotend. I think the PLA is melting too early in the barrel. Any thoughts?

Edited 1 time(s). Last edit at 09/04/2016 07:51PM by JMAPsci.

What hotend you have? Does it have a cooling fan to cool the heatsink section? What temperature you are using?

If its a all metal hot end that jam could just be more resistance than your extruder can currently handle. PLA gets warm and sticky in the cold end but if you have a strong extruder and a tight tensioner you can power through this. Alternatively you can try to clean out your heatbreak/hotend and put a bit of olive oil in and bring it up to around 240 C for a few minutes, this should reduce the friction (i do this cooling fan off so the cold end heats as well)

Try without retraction