I have been playing around with my new Prusa i3 MK2 for a few weeks now but I just can’t get really good prints. This printer is starting to get on my nerves…
I have done some prints right after the printer was setup using the included silver PLA, the prints came out pretty good…see pictures…
Now after trying some Fillamentum ABS, things start to look different.
I have the Prusa in an enclosure with 2 fans, one blowing in air onto the rambo board (not blowing directly at the heatbed) and the other one is blowing air out to the top.
I noticed that the life z adjust value for PLA is somewhere around -0.660 and for ABS it’s somewhere around -0.710. ABS has an extrusion multiplier of 1.05.
All prints where printed at 0.2mm layer height and sliced using slic3r.
Can someone tell me why the white Benchy looks the way it looks, and why the white Adalinda and corse ridges near the bottom?
First is you want no drafts or air movement in the chamber. I would get the electronics out of it if you are worried about heat.
Your Live Z is number is a little to the high side but as long as you get a good first layer I wouldn’t mess with it. Try to keep it under -1.0. Ideally under -0.5 is best for good PINDA operation but your good for now!
What are your temps and speeds for the ABS?
Normally ABS like less squish on the first layer than PLA and the extrusion multiplier is generally higher. Are you using the Prusa version of Slic3r? If so I would go with the .2 and the default profile for ABS. to start with.
Yes I am using the Prusa version of Slic3r. Also using the Fillamentum ABS Settings, 240 HE and 100 Bed. I noticed that the X belt is rubbing against the Idler, maybe this could be causing some problems?
Problem is…I can not get the belt to be in the middle of the idler…Impossible.
Settings seem ok. And, Benchy looked pretty good overall. AbS is hard to print and takes a while to get the hang of.
The belt could be an issue. Thy Y belt is usually an issue because the motor twists. There is a little brace you can print and put between the motor and the threaded rods to help this out.
On the X belt. I would look at the centering of the drive pulley. I have heard others have this issue. There is a large Facebook group for the original prusa printers that can be helpful.
Ok, I never did a steps calibration on mine since everything is a known quantity from Prusa, board, firmware etc. I don’t know if it is needed if everything is stock but you can ask to see what people say. I never really hear about it. Extrusion is usually fine tuned via the extrusion multiplier.
You might rotate him on the bed so he faces a different direction and see if things change. It is hard to see in the pic what is really going on. What are the temps?
