Thanks guys, very helpful! Hopefully I'll have a replacement built this evening...

Ok, I've been doing a lot of ABS printing recently (see pic IMG_1852.JPG ) and have been very happy with the results. However, just today, I can't seem to be able to print a part (motor mount for a flying towel plane) that I have printed successfully 3-4 times previous. The print starts ok (there ar...

ok, M106 S250 and M106 S255 will enable the bed fan, but in the G-code it starts with:

M127
M140 S70 T0
M134 T0
M104 S215 T0
M133 T0
M108 S255 ; turn on M2 fans

and later:

; layer 2, Z = 0.38
M126 S255

which should probably be 'M106 S255'. Does that sound right?

hmm, that is what my cooling is set to (layer 1 -> 0, layer 2-> 100) and that fan never comes on. Is there an easy way to debug that fan?

Oh I remember the "this is your brain commercials..." As for the SW, I used Brainvox for skull stripping,the tal_mcubes command line tool that come with it for isosurface extraction and a little touchup with MeshLab. Printed as two pieces to avoid the serious overhang and the need for supports.

Thanks for the information. I am attaching the model I was trying to print. I did not try rotating it. The bed fan was mentioned. I assume that is the fan angled downward (45 deg from the bed)? That fan has never come on for me (the one blowing directly on the extruder is always on). Should it? If s...

Ok, I've printed 4-5 objects now and a couple of them have shown effects like this (see the distortion along the short vertical edge). Sorry kind of crappy images... bad_1.jpg bad_2.jpg I am using Simplify 3D with the default settings for the M2 process. PLA with 215 deg extruder, 70 deg table. Prep...

Ok, I'm pretty new to this but here is my second print. I reconstructed by brain from a fairly hires MRI scan. Some volume image processing and marching cubes to generate the input obj file.
FWIW