Three extruders, single nozzle

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jesse
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Three extruders, single nozzle

Postby jesse » Sun Sep 06, 2015 6:08 pm

I'm trying to get a diamond nozzle working with a Kossel 2020 (delta). The firmware it currently has is Marlin.

RAMPS 1.4 has room for two extruders. I added a third extruder using the GRBL / CNC Shield.

This is the wiring: http://reprap.org/wiki/Adding_more_extruders

I tried this firmware that is designed for multiple extruders and single nozzle, but it's not clear to me how to add the third extruder via the daughterboard to the RAMPs.

http://marlinkimbra.it/

Has anyone tried doing this? If so, can you post your firmware?

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Re: Three extruders, single nozzle

Postby jesse » Sun Sep 06, 2015 7:59 pm

I found a way to mount it using a single rubber band.

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Re: Three extruders, single nozzle

Postby jesse » Mon Sep 07, 2015 8:05 pm

I was able to get it working using this firmware.

http://www.jbcse.com/Folgertech_Kossel_Firmware(V2)_smaller_pulley_diamond_nozzle.zip

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Re: Three extruders, single nozzle

Postby jesse » Thu Sep 10, 2015 7:14 am

Some photos of a fan mount. I'm thinking of doing three 40 mm fans.

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mhackney
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Re: Three extruders, single nozzle

Postby mhackney » Thu Sep 10, 2015 8:56 am

The machining on the cold zones looks familiar :)

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Captain Starfish
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Re: Three extruders, single nozzle

Postby Captain Starfish » Thu Sep 10, 2015 9:38 am

Rather than three fans, what about running a fan to blow down between all three, together with some kind of deflection cone/shroud which directs the air across the heatsinks and away from the nozzle?

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Re: Three extruders, single nozzle

Postby jesse » Thu Sep 10, 2015 6:19 pm

Captain Starfish wrote:Rather than three fans, what about running a fan to blow down between all three, together with some kind of deflection cone/shroud which directs the air across the heatsinks and away from the nozzle?


That's a good idea and that's what the creators of the diamond nozzle recommend. Like this: https://myhub.autodesk360.com/ue29fb034 ... 5994847d18

The hot end platform has a small hole that I don't want to enlarge. If I print another effector with a larger center hole that could work. Also, if a single fan is used, it must be high CFM such as Delta AUC0512DB.

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Renha
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Re: Three extruders, single nozzle

Postby Renha » Thu Sep 10, 2015 6:42 pm

3D printing is magic!

Sorry my engrish :-/ you could PM me in Russian.

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Re: Three extruders, single nozzle

Postby jesse » Thu Sep 10, 2015 6:53 pm

Renha wrote:Like this one there viewtopic.php?f=59&t=8069&start=25


Thanks, but i'm using the cheap e3d clone heatsinks that aren't the same size.

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Re: Three extruders, single nozzle

Postby Renha » Fri Sep 11, 2015 4:45 am

If you have or could create stl of diamond assembled with your heatsinks, I could try to make needed modifications
3D printing is magic!

Sorry my engrish :-/ you could PM me in Russian.

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Re: Three extruders, single nozzle

Postby jesse » Sat Sep 12, 2015 9:09 pm

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The fans are mounted. I need to improve the mount for the servo. The bed is too out of level and the plastic is leaking from the heat breaks


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