Hi guys
this is my first time writing on a 3d printing forum,Hope I will be clear enough.
I want to share my problem.
My printer is a CTC with sailfish firmware 7.7 installed, I recently had this strange problem and I’m not able to figure out why and I don’t even now how to name something like this.
Basically the top surface of my prints looks rough and irregular.
All the prints are done in Abs plastic, printed at 238C,heated bed at 115C,print speed of 70 mm/s,nozzle 0.4.
2 different filaments, same result,I already leveled the bed something like 5 times
I will attach some pictures so you guys can see and maybe help me.
OK, looks like under extrusion but first. The bed is to hot. First layer is ok at 110-105 but I would drop after that to 105-95 depending on the environment.
238 is ok. I think you are going to fast. I would start out at 2000mm/min or around there to get things dialed in. SLOW DOWN! Once you are getting a good test print then speed up until the print or printer suffers.
What slicer? What is the layer height and extrusion multiplier?
I’m using makerware
layer height of the long prints is 0,2
the 2 small cubes are made in 0.1 resolution.
to be honest it never gived me problems
and another thing is that on this long prints it warps on the left side
so I increased the bed temperature for that reason.
I print with abs in an enclosure
I tried to tweak with the extrusion multiplier
originally it was at 0.98
I changed it to 1 and then I tried to low it
because I was thinking it could be over extrusion, because I also get rough sides.
I would run at .2 until you get things dialed in. 1 on the extrusion multiplier is a default for ABS so probably don’t stray to much. Have you measured the filament diameter and entered it. This is important. It may say it is 1.75 but may actually be an average of 1.71 over a distance.
I think speed is a factor here though.
Also, if you have the material cooling fan on the left side make sure it isn’t running.
The only thing I know for sure is that it started happening since I changed nozzle
before I was using the standard ctc one
then I changed it to improve quality and I noticed a change in quality but also noticed this effect that was going on.
before it was not so evident but now it’s too much
Well, that is a whole new set of circumstances. I assume the correct size of the nozzle is entered into the slicer. From that point it really means starting over with calibration cubes and going through the whole process.
Yes but I don’t know why when I changed nozzle It printed fine for 2 weeks then everything changed
Could have a partial clog. Also if this printer uses PTFE tubes it may be getting worn.
