Hottest Hotend Available With the recent increase in interest when it comes to recycling plastic to make our own filament, I hope someone can answer my question about which hotend supports the highest heat in a stable manner. My household uses at least 20-30 water bottles per week, in addition to Gatorade bottles. Both are made of PET(E) plastic (recycle code #1) which has the following properties: Melting Temperature: 250°C-260°C Boiling Temperature: 350°C I was not able to find the "extrusion temperature" of PETE. Source: Wikipedia The hotend I currently use has a PTFE disk about 1/3" thick which using two 50mm M4 bolts to connect to the extruder. Apparently (I haven't tested this for fear of having to replace the hotend) PTFE has some strange reactions to temperatures >250°C which includes toxic fumes and lack of being a sturdy support material. So this brings me to my question: What is the highest temperature rated hotend available? I would love to be able to use self made 3mm PETE filament to eliminate the need for buying filament. https://reprap.org/forum/read.php?1,147918,147918#msg-147918 Thu, 05 Mar 2026 18:14:34 -0500 Phorum 5.2.23 https://reprap.org/forum/read.php?1,147918,154635#msg-154635 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,154635#msg-154635
NewPerfection responded: "As long as the plastic is never taken above the decomposition temperature, the degredation and outgassing will be minimal."

And anyway, even though I'm pretty sure I'll get a reputation for being a boor for saying it yet again

We should all be ventilating our printing areas!]]> xiando General Sat, 15 Sep 2012 18:29:42 -0400 https://reprap.org/forum/read.php?1,147918,148568#msg-148568 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148568#msg-148568 -------------------------------------------------------
> That would be a tough one and doesn't the melting
> and remelting of the plastic break down its
> integrity? Remember that bottle, or bag, you are
> melting has already been melted, potentially,
> numerous times as most are recycled these days.

As long as the plastic is never taken above the decomposition temperature, the degredation and outgassing will be minimal.]]> NewPerfection General Thu, 16 Aug 2012 14:24:48 -0400 https://reprap.org/forum/read.php?1,147918,148541#msg-148541 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148541#msg-148541 Dark Alchemist General Thu, 16 Aug 2012 10:53:44 -0400 https://reprap.org/forum/read.php?1,147918,148540#msg-148540 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148540#msg-148540

> [yfrog.com]
> Picture by Josef Prusa
]]> akhlut General Thu, 16 Aug 2012 10:47:35 -0400 https://reprap.org/forum/read.php?1,147918,148538#msg-148538 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148538#msg-148538 DeuxVis General Thu, 16 Aug 2012 10:42:15 -0400 https://reprap.org/forum/read.php?1,147918,148534#msg-148534 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148534#msg-148534 Dark Alchemist General Thu, 16 Aug 2012 10:36:53 -0400 https://reprap.org/forum/read.php?1,147918,148533#msg-148533 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148533#msg-148533
We had some talk about such ideas and concepts over the last years - look here: [reprap.org]
... and in the discussion tab: [reprap.org]]]> VDX General Thu, 16 Aug 2012 10:33:55 -0400 https://reprap.org/forum/read.php?1,147918,148528#msg-148528 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148528#msg-148528 -------------------------------------------------------
> I have been meaning to try an Arcol for some time,
> very good feedback from people using them.
>
> Also -
>
> Josef Prusa's new all metal hot end is almost
> ready for release -
>
> 300 degreees C operating temp with a Thermistor
>
> 500 degrees if using a thermocouple!
>
>
> Picture by Josef Prusa

500'C? That will certainly open some doors to new materials, beyond just plastic even. I see a wonderful future in the RepRap project, and I'm glad to have jumped in at the right time, as I feel many changes coming.

Google is not helping me, could you give a link to his post about the all metal hot end?
]]> Lodorenos General Thu, 16 Aug 2012 10:07:44 -0400 https://reprap.org/forum/read.php?1,147918,148522#msg-148522 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148522#msg-148522
Also -

Josef Prusa's new all metal hot end is almost ready for release -

300 degreees C operating temp with a Thermistor

500 degrees if using a thermocouple!


Picture by Josef Prusa
]]> richrap General Thu, 16 Aug 2012 09:56:02 -0400 https://reprap.org/forum/read.php?1,147918,148499#msg-148499 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,148499#msg-148499 -------------------------------------------------------
> What is the highest temperature rated hotend
> available? I would love to be able to use self
> made 3mm PETE filament to eliminate the need for
> buying filament.

The Arcol V4 hot-end from arcol.hu also has full metal construction and handles 300+C temperatures just fine. I think I ran it at 320C when I was experimenting with polycarbonate and there were no problems.]]> ttsalo General Thu, 16 Aug 2012 07:34:49 -0400 https://reprap.org/forum/read.php?1,147918,147955#msg-147955 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,147955#msg-147955 store.qu-bd.com]

Its a preorder for the seconb run of them so you would have to wait a bit, but its cheap and should be able to reach those temperatures with the cartridge heater option with no problems.]]> vulcanrd General Mon, 13 Aug 2012 12:08:11 -0400 https://reprap.org/forum/read.php?1,147918,147928#msg-147928 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,147928#msg-147928
The 55 is just a provisional placeholder price for now on the site, we hope to get much lower than that, if you want to be a beta-tester of the design we can probably go even lower if you write a review on the forums with your feedback and thoughts, PM me if you are interested.]]> SanjayM General Mon, 13 Aug 2012 09:12:31 -0400 https://reprap.org/forum/read.php?1,147918,147927#msg-147927 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,147927#msg-147927 Lodorenos General Mon, 13 Aug 2012 09:07:24 -0400 https://reprap.org/forum/read.php?1,147918,147925#msg-147925 Re: Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,147925#msg-147925
We have taken it to 350C and the cooling is still happy, there is no PTFE/PEEK in the design so the theoretical temperatures it can reach are above what we are able to produce with a simple resistor heater, and should certainly be enough for any thermoplastic.

The design is detailed here [forums.reprap.org] (Be sure to read on in the thread as the design has morphed considerably since the first post.)

Edit:

Once available you will be able to buy from our webstore here: [e3d-online.com]]]> SanjayM General Mon, 13 Aug 2012 08:42:02 -0400 https://reprap.org/forum/read.php?1,147918,147918#msg-147918 Hottest Hotend Available https://reprap.org/forum/read.php?1,147918,147918#msg-147918
My household uses at least 20-30 water bottles per week, in addition to Gatorade bottles. Both are made of PET(E) plastic (recycle code #1) which has the following properties:

Melting Temperature: 250°C-260°C
Boiling Temperature: 350°C
I was not able to find the "extrusion temperature" of PETE.

Source: Wikipedia

The hotend I currently use has a PTFE disk about 1/3" thick which using two 50mm M4 bolts to connect to the extruder. Apparently (I haven't tested this for fear of having to replace the hotend) PTFE has some strange reactions to temperatures >250°C which includes toxic fumes and lack of being a sturdy support material.

So this brings me to my question:
What is the highest temperature rated hotend available? I would love to be able to use self made 3mm PETE filament to eliminate the need for buying filament.]]> Lodorenos General Mon, 13 Aug 2012 07:53:15 -0400