New Bondtech Nozzles

[Ryan Carlyle]

https://www.bondtech.se/product-category/nozzles/bondtech-nozzles/bondtech-cht/

Multi-bore nozzles. Data on flow rate looks impressive.  I swear we kicked around this idea years ago, but is Bondtech the first to actually build a commercially viable one?

[Whosawhatsis]

First one I’ve seen available. E3D is taking a different route, making nozzles out of copper for higher thermal conductivity. They have a new one that is made of copper, with a piece of hardened steel set in the tip, similar to the jewel-tipped nozzles, for wear resistance. It will be interesting to see how the two compare. The higher surface area of the bondtech one should be better for matching filament temperature to nozzle temperature, though there doesn’t appear to be much metal connecting that center section to the rest, and I wonder how much it’s temperature is going to drop…

Of course, bondtech nozzle also makes it impossible to do a cold pull. Seems like there should be ways to do this that don’t break that ability…

On Oct 9, 2021, 15:02 -0700, Ryan Carlyle <temp...@gmail.com>, wrote:

https://www.bondtech.se/product-category/nozzles/bondtech-nozzles/bondtech-cht/

Multi-bore nozzles. Data on flow rate looks impressive.  I swear we kicked around this idea years ago, but is Bondtech the first to actually build a commercially viable one?

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[Ryan Carlyle]

They’re actually posting cold pull photos on Facebook, it seems to work. 

The conductivity of any metal is SO much higher than plastic that a little sliver of brass in the center will dump a ton of heat compared to what conducts through ~1mm of plastic. brass is around 500x higher thermal conductivity than PLA… changing the nozzle material is marginal compared to getting heat directly into the center.