Dragon Hotend Mod keeps...clogging? I don't know exactly. Stops extruding anyway.
Hi everyone,
I have done a mod upgrade to my Prusa MK3S+ and I don't know what the issue is.
I got this one: https://www.amazon.de/gp/product/B086JQ929H/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Dragon Hotend High Flow. It printed for around 1h, and then simply couldn't push enough filament through.
If I start a new print, it won't work, I have to unload and then load the filament again.
This varies though. Sometimes it is after a few minutes, sometimes more.
- I've played with the tension screw
- I've added more thermal paste between the heating source and the heat block
- The PTFE tube fits correctly
- The Experimental feature for the motors is enabled to lower the temps a bit (the motor is a very hot)
- I've even increased the volumetric flow from 15mm3 to 20mm3
I am stumped, this is a 100euro 'drop in replacement' yet... I simply can't get it to work. Any advice is welcome!
.
Several. It comes out clean.
Photo
Do note that it was really hard to get the filament flowing. Heated the nozzle to 275, and I had to leave it there a bit to be able to push through, otherwise it wouldn't budge. After it started flowing, cooled it off just like in the manual/website and this came out, seems clean.
Nozzle
I was wondering if the issue could be the nozzle? I'm using the one that came with the Phaetus, and I think it is not a normal brass model, right?
Should I change the temps I'm using? Increase them a bit?
Can you post a photo of the cold pull?
Nozzle Changed
I changed the nozzle and printed another benchy. Same result though, roughly after the same amount of time.
Issue
Have your tried printing a temperature tower. I think this is either a filament issue or a temperature issue.
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Chuck H
3D Printer Review Blog
Issue
I have not, but I will. I doubt it is a filament issue, I'm using prusament that works perfectly usually.
Have your tried printing a temperature tower. I think this is either a filament issue or a temperature issue.
Nozzle diameter
Could it be that it is a high flow hot end and I'm using a 0.4mm nozzle?
Temperature Tower
I cannot print it, the 0.4 nozzle gets clogged before finishing the first 225C part.
Have your tried printing a temperature tower. I think this is either a filament issue or a temperature issue.
You sure you're printing PLA? I've seen stuff like this when I accidentally put a spool of PETG in instead of PLA.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
pla
I'm printing this: https://shop.prusa3d.com/en/prusament/800-prusament-pla-vanilla-white-1kg.html
You sure you're printing PLA? I've seen stuff like this when I accidentally put a spool of PETG in instead of PLA.
mmh
Reminds me that when I started to investigate the Dragon, I saw a boatload of reports of clogging with the high flow version, so I decided to go with the standard flow version instead, which has served me well.
Do you print inside an enclosure? I remember that as one of the scenarios that people reported make the high flow clog.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
enclosure
Nope, it is open... 🙁
Reminds me that when I started to investigate the Dragon, I saw a boatload of reports of clogging with the high flow version, so I decided to go with the standard flow version instead, which has served me well.
Do you print inside an enclosure? I remember that as one of the scenarios that people reported make the high flow clog.
Clog
Nope, it is open... 🙁
Reminds me that when I started to investigate the Dragon, I saw a boatload of reports of clogging with the high flow version, so I decided to go with the standard flow version instead, which has served me well.
Do you print inside an enclosure? I remember that as one of the scenarios that people reported make the high flow clog.
I am not having issues with clogging but I do not print that filament.
--------------------
Chuck H
3D Printer Review Blog
high flow?
so you're printing with a dragon high flow with a 0.4 nozzle? What temps are you using? What nozzle?
Nope, it is open... 🙁
Reminds me that when I started to investigate the Dragon, I saw a boatload of reports of clogging with the high flow version, so I decided to go with the standard flow version instead, which has served me well.
Do you print inside an enclosure? I remember that as one of the scenarios that people reported make the high flow clog.
I am not having issues with clogging but I do not print that filament.
bump
Anyone got any ideas on how to fix the clogging? 🙁 I've tried upping the printing speeds, but to no avail.
clogs
Anyone got any ideas on how to fix the clogging? 🙁 I've tried upping the printing speeds, but to no avail.
Upping your print speed in a clog is only going to increase clicking. Imagine increasing the flow in a hose when you have it compressed, it is not going to increase flow. Have you tired to clear the clog? I do cold pulls, use acupuncture needles, and will use 1.5mm welding rods. It all depends on where the clog is.
--------------------
Chuck H
3D Printer Review Blog
clogs
I remove the clog, extrude some material to make sure it is unclogged, then print with the increased speeds.
Anyone got any ideas on how to fix the clogging? 🙁 I've tried upping the printing speeds, but to no avail.
Upping your print speed in a clog is only going to increase clicking. Imagine increasing the flow in a hose when you have it compressed, it is not going to increase flow. Have you tired to clear the clog? I do cold pulls, use acupuncture needles, and will use 1.5mm welding rods. It all depends on where the clog is.