Thanks so much for the swift reply.
The printer is brand new and I have only printed with Fiberflex so far. The tension screw, I have tried in different possitions, same results and I can feel the filament going in ok but will have a double check just in case.
Please let me know about those 30 things to check as the printer is brand new so not even 10h print time.
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gr5 2,224
You have pretty bad underextrusion. I'd say you are underextruding by about 20 to 30%. So if you are going to increase extrusion try 20% but I think if it's underextruding that badly then going to 120% will just cause the extruder to fail even worse. In my experience 10% is about the max you can compensate for.
I'm wondering if someone took apart the feeder and put the tension screw back in wrong. There is a tension sensor on the side of the feeder. Make sure it's half way in the window. Or maybe someone printed some carbon fiber and ground down the feeder.
But the most common cause of underextrusion BY FAR is worn teflon part. There is a teflon part in the print head. It is considered a "consumable" by ultimaker. So they are nice and sell it quite cheap (around $18?).
You can get them from any reseller in your country. If they are all out, 3dsolex sells a 3rd party version.
I'd look in the maintenance menu and see how many hours of printing the printer has done. You have to replace this part every 500 hours or so.
The teflon gets soft at the hot end over many weeks and the pressure makes the hole in the center squeeze the filament hard enough that it can add several pounds of resistance.
If this isn't the issue I have a list of about 30 things to check. Most of them only take a few seconds to eliminate.
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