[ultimaker 2+ extended filament problem]

Hi Lysaer,

Since you've upgraded both printers to the + version yourself, I'm sure you find the problem.

When you said it's weak, do you think the stepper is weak or is it the feeder tension you think about? Also you said that this issue occurred “kind of overnight”, there might be an electrical issue.

You need to find out if the feeder motor is weak or not. Load a filament and try to hold it after it is entered the Bowden tube. You may see feel if the stepper is weak and step back or if it just start to eat into the filament.

You may also have a look at the current setting for the feeder in the menu at the Ultimaker controller, just compare the UM2 and the UM2-Ext.

Btw, if the feeder spring is too loose, it will eat into the feeder.

Good luck in your findings.

Torgeir

 

Cheers for the info dude

Finally fixed it after much fiddling.

Decided to take the feeder off and found out instantly what the problem was.

The cog on the end of the motor had slipped back, so only the face of the teeth on the motor cog was touching against the face of the teeth on the feeder, so when pressure was being exerted the cogs would just slip.

pulled the cog back out so the teeth met up and now it is perfect

[ultimaker 2+ extended filament problem]

Hi there

I have an ultimaker 2+ and an Ultimaker 2+ extended

Both of these were originally non + models that I brought the kits for and upgraded.

My issue is that the ultimaker 2+ prints with no issues at all and the 2+ extended was printing fine and without changing anything it is now having huge issues with the filament slipping and not being drawn through.

If I use the same settings on both printers, printing the same file, using the same roll of filament, the 2+ prints fine and the 2+ extended just struggles to pull the filament though.

I have tried adjusting the screw to no avail, it just seems like it is not gripping on the knurled bolt inside.

Help would be greatly appreciated please

[Knurled bolt removal]

It was probably loc-tite from the threads. I've had a few of those that were impossible to remove without significant force. Heat would probably work as well but I was in a hurry.

 

Yeah it was a pain, had the same on my other Ultimaker 2 as well.

Also am using your low friction spool and uprated filament guide, great work

[Knurled bolt removal]

Finally managed to remove it

Took the motor down to the garage, clamped up the bolt in a vice and used a punch and mallet.

I have no idea why it was stuck on there so tight.

Swapped it for a mk8 driver gear and so far am impressed with the results over the knurled bolt

[Knurled bolt removal]

Which printer?  I don't know how to do it for the um2+ but for the UM2 it's pretty easy and obvious - just loosen the set screw on the side.  I think it's a 1.5mm hex.

 

Hi there

It is a Um2 extended

I loosened the grub screw and completely removed it, but for the life of me even with pliers I cannot remove the knurled bolt, I have tried shocking it and using penetrating spray.

Should it literally just pull off?

Thank you in advance

[Knurled bolt removal]

Hi all

How exactly do you remove the knurled bolt from the motor please ? I am trying to swap it for a mk8 drive gear

Thank you in advance