ABS plastic print tests!

Good evening everyone!

I’ve recently received my Lulzbot TAZ 3 and after calibrating it, and printing the little octopus (not an incredible print, but i think it’s good enough for a newbie: http://prntscr.com/2p9y2i), I’ve tried to go and print a ring I made in Cinema 4D.

At first, Slic3r had a few troubles but i managed to solve them (even though Slic3r still tells me that there are several issues with the model but it has managed to solve properly). The point is that the upper part of the ring comes up pretty good but the lower part, that has little overhangs, come up pretty messed up.

First test: 235° for first layer - 225 for other layers // 110° heated bed // 0.1mm layer thickness: http://prntscr.com/2pa1p9

Second test: 235° first layer - 230 other layers // 110° heated bed // 0.2mm layer thickness: http://prntscr.com/2pa3u1

As you can see on the second screenshot, the upper/back part of the ring came pretty good, nice “low poly” look and a extremely smooth surface. Just what I expected.

BTW, everything setting is taken from the lulzbot profiles available for slic3r in lulzbot’s webpage.

Here you can download the file: https://www.mediafire.com/?431mr80r2rpfhcr
In slic3r the object is scaled down to 50%.

Thanks in advance everyone!

I’d look at your images and offer assistance, but I think my hosts file is blocking your image host links. If you want, upload the pictures to the forum using the “upload attachment” and “place inline” function and we can take a look that way and see what is going on.

Oh, sorry!
First image:

Second image:

Third image:

Hope this solves the issue :stuck_out_tongue: (never found the upload attachment/place inline functions, weird :S)

Thanks in advance!

EDIT: Finally found the upload attachment/place inline!

That’s a fairly small print, so one thing that might help out is A. upgrading to the 1.0 version of SLic3r if you are using the older version, and 2, there is a setting inside the slicer profiles (I think in the filliament section) that says “Let Slic3r automatically manage your cooling and fans for small parts” or something along those lines. Your starting layer hight also might be slightly off, but looking at the print, it’s probably a combination of the circle bug in older slicer, and the small layer melty issues. Maybe try grabbing the updated ABS profiles in the download folders too if you haven’t already grabbed them.

I’m already using the 1.0 version of Slic3r, since the version that comes was acting a little weird when exporting STL files.

The updated profiles are the ones found in here https://www.lulzbot.com/support/taz-slic3r-profiles ?

Yup, that’s them. And the exact setting to try first is the “enable auto cooling” checkbox on the filliament tab cooling section. Check your bed calibration as well, and make sure your first layer height is good. On smaller parts that makes a huge difference in quality of the first layers. If you are too close, basically plastic pressure builds up in the melt chamber and extrudes out the nozzle with excess force at the edges where it has room to relieve pressure. as that release happens pressure normalizes as you go up in layers.