It had to happen eventually I had my first-ever extruder clog with the BullDog XL and E3D V6 combo after a year of almost daily operation. It looks like a piece of metal found its way into the hot end. Your guess is as good as mine regarding the source of this bit of crud. clog.jpg mod_embed_images_loadimage('8793254daf5d07fdf9607c2ecb4119df', 'https://reprap.org/forum/addon.php?1,module=embed_images,url=http%3A%2F%2Fmark.rehorst.com%2Fmisc%2Fuscope%2Fclog.jpg', 'http://mark.rehorst.com/misc/uscope/clog.jpg', 'https://reprap.org/forum/addon.php?1,module=embed_images,check_scaling=1,url=http%3A%2F%2Fmark.rehorst.com%2Fmisc%2Fuscope%2Fclog.jpg', '', 613115, 800, 400, 'Loading image ...', false); Photo made with Droid Turbo phone, 3D printed camera adapter, and surgical microscope. https://reprap.org/forum/read.php?1,613115,613115#msg-613115 Fri, 16 Oct 2026 04:39:07 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,613115,615235#msg-615235 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,615235#msg-615235 [attachment 70727 georgi_markov_pellet.jpg]]]> leadinglights General Mon, 25 Jan 2016 04:44:53 -0500 https://reprap.org/forum/read.php?1,613115,615158#msg-615158 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,615158#msg-615158 [attachment 70712 clog2.jpg]]]> elwood127 General Mon, 25 Jan 2016 00:22:03 -0500 https://reprap.org/forum/read.php?1,613115,614892#msg-614892 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614892#msg-614892
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the_digital_dentist
That filament is 1.75mm diameter which would make that "screw" about 0.3 mm across.

... so what? - I have some watchmaker screws with 0.5mm head and have seen even smaller, used for clocks, microtech and such.

Have you extracted the metallic part to look what it's like?]]> VDX General Sun, 24 Jan 2016 11:12:33 -0500 https://reprap.org/forum/read.php?1,613115,614807#msg-614807 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614807#msg-614807
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the_digital_dentist
I'm just starting to play with TPU.

I've been trying TPU and TPE. The TPU is great, it prints easily and has useful flex. I printed some vibration absorbing feet for my printer which really cut down the noise transferred to the desk it's standing on. The TPE is much softer and I haven't had any success feeding it yet. Both my TPE and TPU are 3mm and I made a fairly crude conversion of my extruder to switch from 1.75mm, so I'm hopeful that when the parts and tools I've ordered arrive I can make a more capable 3mm system that will handle the TPE. Mostly I need a 3.2mm reamer so that I can make a decent bore for the heat-break.]]> JamesK General Sun, 24 Jan 2016 08:24:31 -0500 https://reprap.org/forum/read.php?1,613115,614716#msg-614716 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614716#msg-614716 dc42 General Sun, 24 Jan 2016 03:25:45 -0500 https://reprap.org/forum/read.php?1,613115,614714#msg-614714 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614714#msg-614714 ahh its green filament, with a little amalgam in there :)]]> MechaBits General Sun, 24 Jan 2016 03:20:53 -0500 https://reprap.org/forum/read.php?1,613115,614673#msg-614673 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614673#msg-614673 the_digital_dentist General Sat, 23 Jan 2016 23:15:36 -0500 https://reprap.org/forum/read.php?1,613115,614672#msg-614672 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614672#msg-614672
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VDX
... looks like the head of a small cross-head screw :S

My eyes were seeing something but i couldnt make sense of it and you know, i think you hit the nail on the head there :) it sure does look like the head of a real small phillips screw]]> Mutley3D General Sat, 23 Jan 2016 23:09:39 -0500 https://reprap.org/forum/read.php?1,613115,614660#msg-614660 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614660#msg-614660 the_digital_dentist General Sat, 23 Jan 2016 22:18:16 -0500 https://reprap.org/forum/read.php?1,613115,614651#msg-614651 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614651#msg-614651
the_digital_denitst: How fast do you print? What materials and settings?]]> epicepee General Sat, 23 Jan 2016 21:42:18 -0500 https://reprap.org/forum/read.php?1,613115,614134#msg-614134 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614134#msg-614134 VDX General Fri, 22 Jan 2016 18:38:40 -0500 https://reprap.org/forum/read.php?1,613115,614127#msg-614127 Re: It had to happen eventually https://reprap.org/forum/read.php?1,613115,614127#msg-614127 bryanandaimee General Fri, 22 Jan 2016 17:51:15 -0500 https://reprap.org/forum/read.php?1,613115,613115#msg-613115 It had to happen eventually https://reprap.org/forum/read.php?1,613115,613115#msg-613115
It looks like a piece of metal found its way into the hot end. Your guess is as good as mine regarding the source of this bit of crud.



Photo made with Droid Turbo phone, 3D printed camera adapter, and surgical microscope.
]]> the_digital_dentist General Wed, 20 Jan 2016 21:02:14 -0500