Turning custom extruder parts

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jays_parts_in_front

This is my new extruder hot end. After enclosing my printer with an insulated box, I decided that I needed to drop more heat before the plastic entry side of the end of the barrel. I accomplished this by turning an extra long barrel out of brass, and a small heatsink out of aluminum to go between the heater and the Groove Mount.

You can see the barrel compared to the original part here:
original_and_replacement_part

The barrel was straightforward to turn out of a piece of 1/4″ hex stock. I put the threads on with a metric M6x1 die.
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The HeatSink took more time, mostly because I had to cut the fins out of a 1″ diameter rod quite deeply with a cut-off tool.
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I compressed the several hours of work on the heatsink down into a six minute video below:

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