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JRDM

New custom heat sink & hot end

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I've been working on a heat sink and hot end upgrade for the Ultimaker 2 series to allow me the use of higher temperature plastics than the stock machine using a few drop-in upgrades to the machine. The heat sink uses the existing fan. The hot end I've designed uses the existing cartridge heater and sensor. This upgrade doesn't affect the build volume. The only required firmware change is to increase the max temp. The machine already had a Bondtech mini because the previous owner converted the whole machine to use 1.75mm filament. I do believe the same parts will work for 3mm filament.

 

The heater block is currently a heavily modified E3D v6 to accept the original heater and sensor and use it the way the original hot end was configured, I hope to machine a nicer block from bare aluminum in the coming week or so.

 

So far I've used PETG, mABS, PC-ABS and PC in this setup without issues. I've not gone higher than 290˚C just yet but I do know it's very comfortable and reliable at that temperature.

new heat sink.JPG

Edited by JRDM

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