Taz 6 with dual mosquitos

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I have been printing a lot more with expensive filaments like NylonX and CarbonX ABS. Some of the parts I print need a lot of supports and I would really like to use dissolving supports. I wanted to avoid spending $3-5K on a new machine that can print two filaments at once. Lulzbot has a dual print head but I have only heard bad things about it.

I came across this dual mosquito head from Bondtech and since then I’ve wanted to make this work on my Taz. Being frugal, I didn’t want to drop the money on all the parts just to find out it didn’t work, and then there was the firmware which is I’m still new to.

The other day I happened to stumble upon this project from someone and it motivated me to give this a shot!

Here are a few comments and questions to see if anyone can help. I’m new to github as well so this might be a good way to learn how to use it and share the files as well (but I’m hoping @marciot will help with the foundation for a firmware)

  1. I see there is a firmware for the Dual Extruder V3 for the Taz 6 with Archim. How difficult is it to add a BLTouch?
  2. If the above firmware combination can be had, I wanted to try that as a base to see how it works. Some things will need to be changed like the nozzle center to center distance, which I think the V3 is 18mm CtC and the mosquito is 15mm CtC. I also need to figure out how far the V3 tool head nozzles are from the the back and bottom of the mount so I can place the new tool head in the right place. The mount seems pretty easy to design, but the cooling fan will be an interesting challenge.
  3. The project linked above has Marlin 2 bug fix firmware edits that may help with this, but I’m hoping the config can be close to the V3 for ease of development. I was also going to use E3D thermistors and heaters so that’s all the same in the firmware as well. I also don’t know if anything from the Lukefish tool head can transfer over since it’s the same tool head extruder combo.

What you think? I cam order the parts and start building the tool head if 1 and 2 are possible.

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I couldn’t leave this thought alone over the weekend so I created a mock up of how the tool head and to see if it would fit. It looks like it does and there’s lots of room behind it to add fan ducting as well.

After looking at the model of v3 head, it looks like the nozzles are 13mm apart center to center, vs the 15mm center to center on the mosquitos. In the pic the nozzles are offset the same distance as the v3 as well.

Mosquito Mockup
Mosquito Mockup1222×1308 133 KB

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I just make a quick test and it is possible to build Yellowfin firmware on a TAZ6 with and Archim and BLTouch. I probably would work well enough in the default configuration, as I believe the Yellowfin firmware has Cura controlling the offsets. If not, you could possibly use M218 to adjust the offset. Then, you would need to calibrate the PID. But other than that, I don’t see any reason why firmware would be an obstacle to this. I can add a Oliveoil_TAZ6ArchimBLTouch Yellowfin_DualExtruderV3 build to the next release so you can have something to start playing with.

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@marciot Thank you and perfect timing! Slice is running a Black Friday sale so I’ll order the major components.