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zumfab

Wacky failure modes

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If you have been printing for a while, you probably have seen a lot of things go wrong. Most issues are pretty common, but chances are you also saw some weird things happen. An unlucky combination of circumstances, a one in a million event or just your own doing. I thought it might be fun to share those experiences.

I'll go first. I use an incandescent light bulb to see the project better while printing. One day, the print suddenly failed mid print. It turns out the light got a little too close to the bowden cable, causing the wrapping to partially melt, but also the PLA to soften in de tube. The softer filament being pushed up into itself resulted in a slight thickening which caused major resistance. In turn that caused the extruder bolt to grind, hampering any further extrusion.

Moving the lamp and cutting out the slightly thicker part of the filament quickly solved this, but I must admit I had not seen this one coming.

What is your story?

 

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3/4 way through a 9 hour print, there was some pretty bad lifting in one corner of the otherwise perfect print. In my wisdom, whilst the print was printing on the "good side" of the print, I decided to get a flat spatula and push down on the "lifting side" to try and flatten it a little. I timed it badly and the printer crashed straight into my spatula and wrecked the whole print bhaahaha... lesson learnt. :p

 

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