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Topic: This is how I found my hot end

Checked on the printer and it had stopped. The filament thread was hanging loose and everything else looked really messy, look at the picture. Even the drive gear has some sign of been really hot.

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2 (edited by jagowilson 2015-02-28 19:22:11)

Re: This is how I found my hot end

Thus why unattended printing is a bad idea. Glad you're ok. Thermal runaway causes fires.

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Re: This is how I found my hot end

Yes I understand that but I can't sit for maybe four hours and watch the printer.

4 (edited by jagowilson 2015-02-28 19:41:40)

Re: This is how I found my hot end

I don't sit and watch mime either but I'm always close enough to know if something like this happens. I've had halts occur as well but I was close enough to notice.  Your printer is comprised of a lot of open source components with low testing and quality control standards so you should always expect the worst.

A halt with heaters on full blast can cause a fire in less than five minutes. Filament is insanely flammable. Hopefully you value your home more than your convenience.

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Re: This is how I found my hot end

jagowilson wrote:

I don't sit and watch mime either but I'm always close enough to know if something like this happens. I've had halts occur as well but I was close enough to notice.  Your printer is comprised of a lot of open source components with low testing and quality control standards so you should always expect the worst.

A halt with heaters on full blast can cause a fire in less than five minutes. Filament is insanely flammable. Hopefully you value your home more than your convenience.

+1
Imagine leaving something on the stove then leaving it. This technology, as it is today, is arguably more dangerous than that. Using a electronic machine that produces insane amounts of heat to melt a flammable substance while moving. If you value your time AND belongings, we completely understand. But for your safety, don't print until you have time to guard your home/office. Have you considered moving it next to a tv? Just print while watching a movie.

Food for thought http://www.soliforum.com/topic/6608/bew … use-fires/
I am sure I speak for the whole community when I say "We never want to hear of that happening again."

Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
Filawinder and Filastruder #1870.....worth every penny!

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Re: This is how I found my hot end

Yes I understand and I will not leave it anymore.

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Re: This is how I found my hot end

Maybe one of these should be installed: http://www.amazon.com/10Pcs-Celsius-Cir … ermal+fuse

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Re: This is how I found my hot end

Sure, but that doesn't prevent fires from the bed, the power supply, etc.

You don't have to sit there watching it, just as you don't have to sit there watching a turkey roast in the oven... but you shouldn't leave the premises, and you should have a smoke detector very close to the printer.

Its the same story with laser cutters - they can take hours to process a bed full of parts, but that doesn't mean its okay to leave them unattended. I won't even leave the room the laser cutter is in if its running.

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Re: This is how I found my hot end

So how did this happen, did what you were printing come unstuck and collect around the hotend?  or something else?

Glad it wasn't more serious

Thanks

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Re: This is how I found my hot end

Parts of it unstuck it seems.

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Re: This is how I found my hot end

Maybe it can be that the x-axis hung and it just stood in the same spot and "printed".