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extruding problems with ultimaker v2 using olsson block

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OK, here are a few questions for narrowing down the issue:

- Is it a new problem of a configuration which previously worked? Did you successfully print with the Olsson block?

- How stable is the temperature?

- Have you performed some cold pulls?

- Have you tried to print hotter? 210°C is certainly too cold for printing at 50mm/s with a 0.8mm nozzle and 0.2mm layer height.

- Is the Bowden tube undamaged and clean?

- Are the teflon and the stainless steel isolator sitting at their correct places? Any gaps?

- Did you change the nozzle while it was hot?

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I'm currently using the 0.4 nozzle and getting extruding problems add 210c 50mms

The printer is four days old should be undamaged as well as clean and teflon should still be as good as new I currently have a 2 mm gap in between the stainless steel isolator and the teflon like recommended in the Ultimaker ios app.

I always change the nozzle at around 150c since it is a lot easier at that temperature

I have did some cold pulls like you recommended but it make no difference :(

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