I also have another question regarding calibration that I couldn't fit in the title. Are the firmware and Slic3r settings calibrated "out-of-the-box" when kits are purchased from Makerfarm? Or should I go through a calibration guide such as http://reprap.org/wiki/Triffid_Hunte...ibration_Guide ?

On to the thread topic, I notice that when I print parts that have multiple pieces on the bed in a single layer (e.g. the bridge test shown below, 4 equally spaced and equally sized small pieces, etc.), the filament drips/leaks out of the nozzle when it moves to the next piece and causes blobs to grow on the sides of the print. I've been printing with ABS, 250C hot end temperature.

Notice the inside corners of the 2 columns:


The worse of the 2 columns:


The other side of the worse of the 2 columns:


Is the filament too hot? That's really my only idea. I tried searching on this forum and elsewhere online, but I'm honestly not sure what exactly to search for so I couldn't really find anything.

I'm still trying to learn the ins and outs of the hardware and software, so any help is appreciated!