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Optimize design for Dual Extruders including IR sensor - In Progress

by ronenst Feb 4, 2017
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There are a number of problems is the tips of the nozzles are not parallel to the bed so the top of the print will have pronounced tapered ridges along the axis where the heater holes are shown, and at 90 degrees to the heater holes will have scalloped ridges. Only solution to this is to dress the tips of the nozzles once they are installed to make them parallel to to bed.
If you use 2 different materials that require different temperatures you may find you get heat transfer from one 2 the other, and because the temp sensor is in the heater block the temp at the tip will be different.
All problems can be overcome with a bit of thought, so just think about it a bit more and all will work ok.

Thanks Tony, the tips of the nozzles will be parallel to the bed because it will be cut after the assembly. The problem with the heat dissipation is more complicated and I thought to assemble between the tips isolated material. I hope to complete the design in about 2 weeks and start the testing.
Thanks for your comments.

In the illustrated position, when the tips are cut to be parallel to the bed the nozzle holes will then be elliptical rather than round. Elliptical nozzle holes might introduce an issue with extrusion width calibration. Another thought, if removing the nozzles and reinstalling, they could be tricky to get re-tightened into the same parallel position again.

I wish you success!

Thanxd anks Stdew, I am aware. To that and intend to of the nozzle
Perpendicular to the bed. For the other problem I intend to get the solution by the mechanical design.
Thanks again, I will share after the design