SoliForum - 3D Printing Community — This is how I found my hot end

Re: This is how I found my hot end

null@example.com (ottoangel) — Tue, 03 Mar 2015 13:04:26 +0000

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

Re: This is how I found my hot end

null@example.com (ottoangel) — Sun, 01 Mar 2015 12:21:13 +0000

Parts of it unstuck it seems.

Re: This is how I found my hot end

null@example.com (Robny) — Sat, 28 Feb 2015 23:34:24 +0000

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

Re: This is how I found my hot end

null@example.com (elmoret) — Sat, 28 Feb 2015 20:08:54 +0000

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.

Re: This is how I found my hot end

null@example.com (ottoangel) — Sat, 28 Feb 2015 20:07:34 +0000

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

Re: This is how I found my hot end

null@example.com (ottoangel) — Sat, 28 Feb 2015 20:06:07 +0000

Yes I understand and I will not leave it anymore.

Re: This is how I found my hot end

null@example.com (AZERATE) — Sat, 28 Feb 2015 19:52:21 +0000

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."

Re: This is how I found my hot end

null@example.com (jagowilson) — Sat, 28 Feb 2015 19:38:19 +0000

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.

Re: This is how I found my hot end

null@example.com (ottoangel) — Sat, 28 Feb 2015 19:35:35 +0000

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

Re: This is how I found my hot end

null@example.com (jagowilson) — Sat, 28 Feb 2015 19:20:44 +0000

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

This is how I found my hot end

null@example.com (ottoangel) — Sat, 28 Feb 2015 18:26:07 +0000

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.