Problems while printing 50 microns  

Re: Problems while printing 50 microns

So this is the result with printing 50 microns, fan speed at its maximum and springs tightened a little.

Re: Problems while printing 50 microns

Hello Thomas,

The issue might be in the termistor.

However, could you please send me the Witcher medailon G-code?
I will try to print it to see if the issue happens or not.

Jindrich

Re: Problems while printing 50 microns

Hello and sorry for the waiting.

The link for the medallion : http://www.thingiverse.com/thing:845187/#files

Regards.

Re: Problems while printing 50 microns

Thank you for the link to .STL, but could you send me the actual g-code please?

Re: Problems while printing 50 microns

Sorry I don't how to do it...

Re: Problems while printing 50 microns

Thomas

Slice the file using your chosen slicer and settings. Save the GCode file to the disk on your HDD.

Locate the GCode file and (if using Windows) right-click and select "Send To/Compressed file". You will have a file with the same name as the GCode in the folder with a .ZIP extension.

Switch to the browser, create a "Reply" post here and drag/drop the ZIP file onto your reply post text box.

Peter

Re: Problems while printing 50 microns

Thanks !

The gcode :

Re: Problems while printing 50 microns

Thomas

I can't print the gcode right now; hopefully Jindrich will be able to.

I did not that you are using an extrusion width of only 0.3mm. If you have the original nozzle (0.4mm) you need to extrude at nozzle width or slightly greater. That may be causing your issues.

Peter

Re: Problems while printing 50 microns

Thomas,

I was able to replicate the issue with the G-code you sent me.

As Peter pointed out, the 0.3 set extrusion width might be the issue. If you have the 0.4 nozzle, try changing the extrusion width to 0.4.

Jindrich

Re: Problems while printing 50 microns

Thanks for your help.

How can I do that ?

Re: Problems while printing 50 microns

So, I tried with new settings (0.4 extrusion width) and the result is still awfull (I changed it in "default extrusion width" and "support material"). Pictures following :

Re: Problems while printing 50 microns

That does show that there is a problem with the first layer now.

What firmware are you running and what first layer height are you using?

Peter

Re: Problems while printing 50 microns

I use the firmware 3.0.3 with a first layer height of 0.2 mm. I use settings of slic3r provided by Prusa.

Pictures with new test of z calibration :

Re: Problems while printing 50 microns

After modifying the extrusion width (to 0.4) and the z calibration, these are the results (still some problems, but it goes better) :

Re: Problems while printing 50 microns

Yeah. Just looks like you now need to find the correct temps and speeds to obtain a good print.

Peter

Re: Problems while printing 50 microns

New try, 60% speed, 200°C, result still not as good as it could (should) be. I'm going slightly mad.

Re: Problems while printing 50 microns

Please send me the new g-code and ill try to print it.

Re: Problems while printing 50 microns

This is the new g code.

Re: Problems while printing 50 microns

Hello Thomas,

I am currently printing medallions on two different printers and they seem to be coming out fine.

We have solved similar issues in the past. The problem was wet/moist filament. When did you open the filament and where did you store it? Do you have the possibility to open new filament? Try drying a couple meters of filament in an oven for 3 hours at 94°C / 200°F.

Re: Problems while printing 50 microns

94 degrees C is well above glass transition temperature of PLA (early 60's).

Some users have tried (I think Christophe?) at higher temperatures and the PLA softens and loses its filament form.

Best to keep the drying temperature at 60 degrees or lower.

Peter