Dual Extruder Nozzle Diameter

[patent 0]

Hallo,

first of all congratulstions for your good work with providing a dual extruder for Ultimaker 2. I am unfamiliar with 3D printing but would try a project with Ultimaker 2 dual extrusion. For this I have the following questions:

 

Can both extruder nozzles have different diameters?

I would need one nozzle with original diameter 0.4 mm and the other with 0.2 mm. Can this work with the larger nozzle at normal printing speed and the smaller at reduced speed?

How can these parameters be selected in Cura?

Do you supply different nozzles sizes and what are the costs?

Are there any problems known with dual extruder ABS printing?

Which retraction parameter should be used for extruder change?

 

Thank you for your help.

 

[IRobertI 521]

Hi Patent,

The experimental dual extrusion kit is meant for the UMO (Ultimaker Original). It was announced this week that dual extrusion will not become available for the UM2. At least not from Ultimaker themselves.

 

[alexwimjan 0]

Hallo all

How about this,

Cyclops - from E3D.

http://e3d-online.com/Multi-Extrusion/Cyclops

The Cyclops

2 In, 1 Out - Switching HotEnd

Cyclops introduces a new way of printing multiple materials not yet seen before in commercially available hotends. By taking 2 input materials and printing them alternately from a single nozzle Cyclops is able to eliminate ooze problems that are inherent in most conventional dual extrusion systems. This new approach has been working excellently for us in testing at E3D, but we are releasing it now as an experimental product as we are still figuring out the best techniques for using this new HotEnd type.

- See more at: http://e3d-online.com/Multi-Extrusion/Cyclops#sthash.xUj1XmP2.dpuf

 

[pm_dude 27]

I wonder how much waste of material the switch will cause. You need to purge the nozzle at every switch.

 

[macua85 52]

Yea that's what I was just wondering....has to be pretty wasteful. Doubt you will get good colour definition.

 

[alexwimjan 0]

I think its not moor wasteful than change the color by another spool.

 

[pm_dude 27]

You are right. It should be the same amount and then it is pretty wasteful since you may have to do this at every layer.

 

[IRobertI 521]

I think its not moor wasteful than change the color by another spool.

 

If you do an Atomic when changing there's basically no waste as the nozzle will be completely empty and you wont have to "flush" it.

 

[pm_dude 27]

and it will be cleaner than doing a purge