All metal hotend My printer is a Prusa i3. I have been using the reprap 3d MKIV head hot end. I have now switched to the, all metal J head hot end V6 for reprap 3d printer. Went to use the printer with Pronterface. What happen is at first the hot end would not heat up. Then I tried it again and it got so hot it melted the pla part that was holding it in and stopped working. I disconnected the hot end. Now some of the functions of the printer don't work. My board is Arduino Meg 2560, using Marlin firmware. My printer is about 3 years old, worked fine till now. Is there some thing that should have been changed with the firmware. Thank you Ed https://reprap.org/forum/read.php?4,739631,739631#msg-739631 Sun, 09 Aug 2026 10:15:15 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,739631,739999#msg-739999 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739999#msg-739999 PID Tuning from the RepRap Wiki.]]> PDBeal Reprappers Wed, 18 Jan 2017 11:32:51 -0500 https://reprap.org/forum/read.php?4,739631,739988#msg-739988 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739988#msg-739988 tobig11 Reprappers Wed, 18 Jan 2017 11:12:25 -0500 https://reprap.org/forum/read.php?4,739631,739930#msg-739930 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739930#msg-739930
The problems you've seen might have to do with a different type of thermistor or a more powerful heater element. AutoPID tuning will help, (after you've flashed a new firmware with the right thermistor definition).]]> o_lampe Reprappers Wed, 18 Jan 2017 07:27:31 -0500 https://reprap.org/forum/read.php?4,739631,739929#msg-739929 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739929#msg-739929 tobig11 Reprappers Wed, 18 Jan 2017 07:19:20 -0500 https://reprap.org/forum/read.php?4,739631,739781#msg-739781 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739781#msg-739781
Have you tried again with the old MKIV? If it shows the same behavior then the problem could be in the ramps board. If not, and the MKIV is heating to a set-point and holding, then the issue is most likely with the thermistor in the new all metal hotend]]> scottybfg Reprappers Tue, 17 Jan 2017 16:30:26 -0500 https://reprap.org/forum/read.php?4,739631,739683#msg-739683 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739683#msg-739683
Quote
Srek
Using PLA parts to mount a hotend is asking for trouble, PLA gets soft at very low temperatures, use PETG or ABS instead.

I use PLA parts to hold my hotends and can't say I've had any issue with them melting. However, they have all been genuine E3D V6 or genuine E3D lite6 hotends that run the hotend fan all the time across the cooling fins. The top of genuine E3D hotends has always been room temp cold where it is usually mounted.

Quote
tobig11
What hot end do you suggest.

I would highly recommend a genuine E3D V6 hotend from e3d-online.com. Once you have it assembled properly, you'll have very little problem from it if any. They are well worth the price in terms of reliability and craftsmanship and lack of troubleshooting time involved in making it work.]]> PDBeal Reprappers Tue, 17 Jan 2017 11:53:09 -0500 https://reprap.org/forum/read.php?4,739631,739674#msg-739674 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739674#msg-739674 tobig11 Reprappers Tue, 17 Jan 2017 11:14:37 -0500 https://reprap.org/forum/read.php?4,739631,739639#msg-739639 Re: All metal hotend https://reprap.org/forum/read.php?4,739631,739639#msg-739639 Investing in a proven hotend is highly recommended, especially if you don't have a lot of experience.]]> Srek Reprappers Tue, 17 Jan 2017 09:45:08 -0500 https://reprap.org/forum/read.php?4,739631,739631#msg-739631 All metal hotend https://reprap.org/forum/read.php?4,739631,739631#msg-739631 Thank you Ed]]> tobig11 Reprappers Tue, 17 Jan 2017 09:05:02 -0500