This happened last night

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jeeplvr
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Joined: Sat Jun 08, 2013 5:26 am

This happened last night

Post by jeeplvr » Sun Apr 20, 2014 4:04 am

Ran out of filament on the spool and the extruder got yanked off its mount and melted into the model. Lucky I didn't burn the house down.
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pleppik
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Re: This happened last night

Post by pleppik » Sun Apr 20, 2014 2:13 pm

Whoa, how'd that happen?

Was the end of the filament somehow permanently attached to the spool? It takes a lot of force to rip the extruder off like that.

jeeplvr
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Joined: Sat Jun 08, 2013 5:26 am

Re: This happened last night

Post by jeeplvr » Sun Apr 20, 2014 10:40 pm

Yes the filament was looped thru the side of the spool. From now on I am removing this piece so the spool of filament will just run out. Its a UP Mini so the extruder is held on with magnets.

roller
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Location: Brisbane, Australia

Re: This happened last night

Post by roller » Mon Apr 21, 2014 7:39 am

Yeah, the magnet mount is a bit stupidly designed. I had an early Mini and had heaps of issues with even minor warp in the print knocking the printhead crooked on it's mount.

jeeplvr
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Re: This happened last night

Post by jeeplvr » Mon Apr 21, 2014 12:36 pm

Look at the model in the last picture. Can anyone tell me why the plastic around the holes is rippled?

roller
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Re: This happened last night

Post by roller » Mon Apr 21, 2014 1:33 pm

I'm finding it hard to see what you mean. Can you do a closeup with the issue highlighted?

jeeplvr
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Re: This happened last night

Post by jeeplvr » Tue Apr 22, 2014 3:54 am

It look as if the printer is carrying over the design of the hole across the mode
l
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caesar
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Re: This happened last night

Post by caesar » Tue Apr 22, 2014 9:52 am

The printer vibrates on high speed moves around sharp angles and produces ripples that resemble the movement around that corner. It is perfectly normal on high speed. They go away if you select high quality and the printer moves slower.
If you also see them on slow prints then there is something loose on the axes.

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DrewPetitclerc
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Re: This happened last night

Post by DrewPetitclerc » Tue Apr 22, 2014 4:07 pm

Wonderful effects, don't suppose it could be the "springs" allowing the build plate to pitch and yaw in relation to the nozzle. :ugeek:
I will state again, you must improve the rigidity of the overall system, springs under the build plate DO NOT improve this. :D
http://pp3dp.com/forum/viewtopic.php?f= ... d007#p5471
Regards
Drew

roller
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Re: This happened last night

Post by roller » Wed Apr 23, 2014 5:05 am

caesar wrote:The printer vibrates on high speed moves around sharp angles and produces ripples that resemble the movement around that corner. It is perfectly normal on high speed. They go away if you select high quality and the printer moves slower.
If you also see them on slow prints then there is something loose on the axes.
High speed on an Up is not very high so you shouldn't get these ringing artifacts. If you are I would expect there is some play that shouldn't be there. The only time I've seen ringing like this on my Up is when the Z fixer was dying with a crack in it - the Mini doesn't have this weakness in the design. It seems unusually consistent and yet spaced for ringing too ... It may be mechanical or software.

jeeplvr
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Joined: Sat Jun 08, 2013 5:26 am

Re: This happened last night

Post by jeeplvr » Thu Apr 24, 2014 4:41 am

I'm going to look at it closer tomorrow. It looks as if the print head or table is wagging when they move backward and forward. It isn't something I can see when its printing. maybe I will get a mag base dial indicator and see what the tolerances are. I noticed it doesn't do it in "fine" mode since everything is moving slower and there isn't as much inertia.

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