Review: Dragon Hotend  

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Yveske
(@yveske)
Trusted Member

@manelto

Yes I do use both

Having problems with bed adhesion every morning......
Posted : 18/08/2020 9:40 am
charles.h13
(@charles-h13)
Famed Member

@manelto

You can use the same thermistor and heat cartridges.   

Posted : 18/08/2020 9:47 am
nemphys
(@nemphys)
New Member

Any idea about how to unclog this hotend? 

I just installed the high-flow version to my printer and it got clogged on the first PLA print (195c).

Posted : 22/08/2020 9:31 am
charles.h13
(@charles-h13)
Famed Member

@nemphys

I did not have this experience.  How long was your PTFE tubing?  

How far inside is it clogged? I typically use a heat gun and tungsten rods.  I buy 1.6 mm Tungsten welding rods(AliExpress and Amazon).  They will fit down the hotend.  You have to be gentle.  

Steps:

  1. Remove the hotend.  The wires can remain on it. 
  2. Hot the hotend with a good set of pliers.  
  3. Heat with the heat gun to 230-300 Celcius for 20-30 seconds.  
  4. I remove the nozzle, but you can leave it on.  
  5. Use the rod to gently push the filament out.  
  6. Repeat until the rod freely passes.  

I would contact support (seller of Dragon) if it jams again.  You may have gotten a faulty dragon.  

Posted : 22/08/2020 2:13 pm
greg_abram
(@greg_abram)
Active Member

I'm considering one of these.   I'm in the market for a new hotend and like the design (and hopefully easier nozzle swapping).  One question:

What are the downsides of getting the high flow version?  Or put another way, is there a reason (other than price) to prefer the standard flow version?

Posted : 27/08/2020 4:50 pm
swedax94
(@swedax94)
Active Member

am I right?
Does the original PTFE have to be shortened by 9mm (? How you did the cutting? And how did you build it into the hotend?

Posted : 28/08/2020 8:36 pm
charles.h13
(@charles-h13)
Famed Member

@swedax94

It is shorter.  The length depends on the extuder setup.  ?What so you mean bu built it into the hotend?

Posted : 28/08/2020 9:25 pm
Yveske
(@yveske)
Trusted Member

@swedax94

Just measure the length of the original ptfe tube that sticks out and cut it down to the same amount when you put the ptfe in the new hotend.

You can use an exacto knife, razor blade or a tool like this to do the cutting

Having problems with bed adhesion every morning......
Posted : 29/08/2020 6:16 am
juanfra
(@juanfra)
Active Member

@swedax94

Hi, the length of the ptfe in the case of the trianglelab's dragon (standard flow version) is around 28.7 mm. But the best that you can do is to cut using this tool

Best regards

Posted : 29/08/2020 6:54 am
swedax94 liked
juanfra
(@juanfra)
Active Member

@greg_abram

The high flow version is more like the "volcano" version, so you will need to deal with all the profiles in order to get the retractions in order to works fine. The standard flow version is more like the stock v6, in my case I didn't change the retractions on my filament's profiles.

Posted : 29/08/2020 7:10 am
michael.f63
(@michael-f63)
New Member

@juanfra could you share a Little Bit more of your printer settings or was that realy the only thing you changed from the standart prusa settings ? special your extruder settings and single extruder mm setup settings.

Posted : 21/09/2020 12:38 am
charles.h13
(@charles-h13)
Famed Member

@juanfra

That explains a lot.  I have nose used the high flow yet.  

Posted : 21/09/2020 1:48 am
charles.h13
(@charles-h13)
Famed Member

@swedax94

I would do a temperature tower print and see if you need to adjust the temperature.  I had to lower mine.  

Posted : 30/09/2020 7:21 pm
swedax94
(@swedax94)
Active Member

Another question:I have much more stringing with the standard flow than with the v6. I use the same settings and the same material as before. What could it be?

Posted : 30/09/2020 7:25 pm
charles.h13
(@charles-h13)
Famed Member

@swedax94

I would do a temperature tower print and see if you need to adjust the temperature.  I had to lower mine.

Posted : 30/09/2020 7:27 pm
swedax94 liked
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