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Hot End Questions
FunInAlaska
Posts: 18Member
First of all I would like to introduce myself. I am brand new to 3d printing as of 2 weeks ago when I received my first 3d printer a JG Aurora Maker Magic. I have been researching 3d printers for about 5 years was just waiting for the opportunity to get one. I got this one because of a "too good to refuse sale" so now I have been using this for 2 weeks.
It has been printing amazingly well till last evening when I was printing a second iteration of a prototype part I am developing and I went to check on it and could see a gap between the nozzle and the previous layer printed. I cancelled the print and started examining the issue. Realizing it was a clogged nozzle I attempted a Hot pull and without success I proceeded to a Cold Pull. This appeared to work so I pulled up a file that I had previously printed with success that was a very short print only about 20 minutes. When this was done it was very spongy and crumbly so I guess the nozzle was still partially clogged.
This morning I went at it on replacing the nozzle with a stainless steel one I had ordered with intention of replacing it anyway, and in doing so discovered that there was a large glob of plastic stuck in the hot end. It appeared the Bowden Tube had pulled up from the nozzle. This was a great find as after I fixed this it completely solved my issue with low or no extrusion. Now I am having a problem with stringing I was not having before but I am sure with some trial and error I can fix that in slicer settings.Â
My questions revolve around options for future upgrades of the hot end. I have so far only printed with PLA and TPU with pretty good success wit both so far. However I do intend to print a decent amount of PETG in the future. As I understand the PTFE is not suited as well for the higher temperatures of PETG and an upgrade to an all metal hot end is recommended for ongoing printing of PETG. So without spending 1/4 of what I paid for the printer can anyone recommend an all metal hot end to replace the stock assembly? Since I have already purchased some replacement nozzles I would like to make sure that it does still use the same nozzle as the stock.
It has been printing amazingly well till last evening when I was printing a second iteration of a prototype part I am developing and I went to check on it and could see a gap between the nozzle and the previous layer printed. I cancelled the print and started examining the issue. Realizing it was a clogged nozzle I attempted a Hot pull and without success I proceeded to a Cold Pull. This appeared to work so I pulled up a file that I had previously printed with success that was a very short print only about 20 minutes. When this was done it was very spongy and crumbly so I guess the nozzle was still partially clogged.
This morning I went at it on replacing the nozzle with a stainless steel one I had ordered with intention of replacing it anyway, and in doing so discovered that there was a large glob of plastic stuck in the hot end. It appeared the Bowden Tube had pulled up from the nozzle. This was a great find as after I fixed this it completely solved my issue with low or no extrusion. Now I am having a problem with stringing I was not having before but I am sure with some trial and error I can fix that in slicer settings.Â
My questions revolve around options for future upgrades of the hot end. I have so far only printed with PLA and TPU with pretty good success wit both so far. However I do intend to print a decent amount of PETG in the future. As I understand the PTFE is not suited as well for the higher temperatures of PETG and an upgrade to an all metal hot end is recommended for ongoing printing of PETG. So without spending 1/4 of what I paid for the printer can anyone recommend an all metal hot end to replace the stock assembly? Since I have already purchased some replacement nozzles I would like to make sure that it does still use the same nozzle as the stock.
Comments
I figure I should be able to use the already existing heating element and thermistor and just replace the heat sink, heater block and heat brake, then hold on to the Heater and Thermistor that comes with the kit and adapt them for the shorter leads and have them as spare parts.
Maybe it will work, maybe not we will see.
What I got is advertised as:
AZSOLO 3D Printer Parts 3D J-head CR10 Hotend Extruder Kit For CR10 CR8 CR-10
It is supposed to be delivered sometime by August 7, 2020
Good thing I have patience.
Ender 3/pro3 matches the screw holes for jgmaker gantry
Whenever mine comes in later this summer/fall I will definitely post my results. My intention will be also to find appropriate connectors as I do like the daughter board that JG uses on the housing of the hot end rather than having to sort out wires through the harnesses.
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