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Thanks for the reply. By speed, I mean the "The speed at which filament will retract and re-extrude". The default in MatterControl is 100mm/s. I'll try dropping that to 25mm/s.
I took a quick look at the article and it looks like it has some great info. More tests this evening.

So I went through the process of clearing the Hotend jam and seating the bowden tube. As I pulled out the tube I did get a "puck" of filament so I thought I was on the right track. Tried another test print with the default Matter Control Slicer settings (2.5 retraction, speed 100...). Sadly I still ...

Hello,

Looking at the Hotend it seems to extrude fine. Are you saying that the incorrect seating of the bowden tube could be impacting retraction?

Thanks

Hello, I have a Rostock Max V2 with upgraded with the HE280 hot end. I've calibrated the extuder, used the Delta calibration wizard, I get good first layer adhesion.. but no matter what I try with retraction, temperature... I can't seem to get prints without stringing.. see the attached picture of a ...

It was the fuse! Back in business - thanks all

I feel a bit like an idiot here. I have a Rostock Max V2 with an HE280 Hot End. I wanted to clean some of the gook off the hot nozzle. Using a small wire brush I think I managed to jump power from the heater cartridge to the Thermister. They was a quick spark than everything went dead. No lights in ...

Thanks. I'll give the existing parts a try.

Hello, I've been looking to get into 3D printing for awhile and my dear wife Surprised me with a Rostock Max V2 kit (which is the model I would have chosen myself). I'm comfortable with soldering... but am a little intimidated by the calibration process. I'm wondering if it might be worth doing the ...