Replacement hotend (and some questions)
My replacement hotend arrived today and I am printing with it right now. So far everything looks good, but I am just a few minutes into a 22 hour print, so hopefully everything will finish OK.
A friend of mine who has been doing 3D printing for more than 2 years told me he had nozzle clogging problems similar to the ones I experienced, and his group of printer friends told him that the PTFE tube inside hot ends needs to be replaced about every 6 months or so. Now my friend has a cartesian-type printer, but I don't know if this would make a difference with hotend internals.
So my question is - does it make sense to replace the PTFE tube in the hotend on a regular basis? And if so, how often to do it? In my case I replaced the PTFE tube several times and still had nozzle jams - and I have never determined that actual cause for these jams. (Would someone like to examine my jammed hotend to see what they can determine??)
So I wonder if regularly changing the hotend PTFE tube is a good idea - or not.
翻譯年糕
Clarence Lee
2016-01-20 08:56:55
PTFE might need to replace after temperature or working environment hurt it.
From my experience , it's usually temperature too high issue.
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Joschka Friedl
2016-01-20 09:27:36
As I got a full clogged hotend, i strangled it with some toothsticks.Heating to 200 degree and pulling toothpick out removed muuuch PLA inside it. Sticking it back in with Little force resulted in The fact that a little piece of wood came out in The no
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Birk Binnard
2016-01-20 13:34:23
Joschka - that is a fascinating story for sure. I have a propane torch that has a flame temperature of something like 1500 degrees F, but it would never have occurred to me to try to heat up the hotend to that temperature.
Getting titanium to glow r
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Joschka Friedl
2016-01-20 18:00:11
Hey Birk,
Thanks for that compliment. Wrote it at 2AM, totally tired.
Propane Torch was the word I was missing.
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Birk Binnard
2016-01-20 20:41:24
My print did complete and it is excellent. I will post results in a couple of hours. Thanks again for discovering the "Joschka propane torch solution" for fixing clogged hotends.
I understand the idea of using acetone for unclogging ABS jams, and there is a comparable chemi
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Joschka Friedl
2016-01-20 21:05:46
Yep, got that one too.
I dunno about acetone how high the risk for cancer is. But THF definitely has one. And its vapors are bad for lungs, eyes, contact for skin is bad. THAT is nasty stuff. Acetone is like a children playground in comparison to THF.
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Birk Binnard
2016-01-20 22:07:35
Joschka - I hear you. My wife started out as a chemist so I am well aware of the risks and dangers of industrial chemicals. I'm not sure I will ever actually try THF - it is scary stuff indeed. Frankly I like your heating approach much better.
Later
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Jose Antonio Fernandez Camero
2016-01-21 02:46:58
In my experience ATOM printers are very picky with the quality of the PLA, I use to get the nozzle clogged about 1 and a half reel (1.5kg.aprox.) of PLA, I have to open and change the PTFE for a new one. Finally I change to a premium quality PLA (I use
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Birk Binnard
2016-01-21 03:40:57
That is an interesting comment Jose. What I've read is that most all printers are sensitive to the amount of moisture in the filament, adn that all forms of PLA will pick up moisture from the atmosphere over time. One article said not to store PLA fo
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Jose Antonio Fernandez Camero
2016-01-21 03:55:19
Its difficult to know as all the PLA manufacturers will tell theirs is the best xD.
I use Fillamentum with good results, they are made in Poland or Czech Republic Im not sure now but you can find a "premium" brand in USA, for sure... just try anof course tell us!!! XD
