Print head problems?

[min0me 0]

Hello,

I have a 17 day old ultimaker 2.

When i unpacked it there was no obvious defects other then marks on the fan (it didn't stop the fan preforming so ignored it).

The last item i printed was last sunday in ABS

Today i'm using some PLA and as the print started the print after the change i noticed the fan shroud scraping against the glass and the head not even close.

I stopped the print to have a closer look to find that the shroud had warped, damaged wires on the fan at the back and some plastic has been leaking around the heater block.

 

 

I have no idea what has caused this, any ideas as to what has happened and how to fix it would be amazing.

 

regards

 

 

[IRobertI 520]

I have a hard time imagining a printing scenario where the printer could do that to itself to be honest.

 

[kris 29]

I would unscrew the fans and the metallic bracket that holds them in place. Then you can bend the metallic bracket back to its original shape.

 

[chriswoolf 1]

I have an Ultimaker 3 which earns its keep well. I run quite a few different filaments, some of which need relatively high temperatures. I've now had two print heads fail because of the transparent plastic lever degrading, so that it crazes and splits at the screw head.

 

I understand this isn't currently a replaceable part - a shame - but I wonder if others have had similar experiences?

 

If so, does anyone have ideas as to how the thermal stress on this point could be reduced?

 

Chris Woolf

[Smithy 1,144]

41 minutes ago, chriswoolf said:

I understand this isn't currently a replaceable part - a shame - but I wonder if others have had similar experiences?

 

There is no official spare part, but search on Thingiverse or Youmagine, there is a lever you can print. Works fine, because someone else has tried it some weeks ago.

[Smithy 1,144]

Found it : https://www.thingiverse.com/thing:2742644

 

or here is another one: https://www.thingiverse.com/thing:3745208

 

[chriswoolf 1]

Brilliant! Thank you.

I'm clearly not alone;}

I did draw the part out and a partly successful replacement but it didn't last long. I suspect I didn't come up with as good printer settings.

 

chriswoolf