Printed Template Hotend, MkIII

I made a hotend you can drill from a template.

Print out the template, wrap it around a metal rod, and drill where you see the holes. The design uses a Bowden cable as an isolator, so only the metal part requires drilling. Detailed instructions can be found here.

Adapters are available for a number of mounting styles and printer models. Where possible, adapters are designed with optional fan mounts, which are highly recommended. An all metal variant is also available - more information is provided in the instructions.

Updates

Version 3 of the hotend returns to the monolithic design of version 1. Version 2 offered a number of improvements to the ease manufacture, however I found the lifetime of the nozzle to be significantly reduced.
Version 3 sees an overall reduction to component size. This offers a number of benefits. Smaller rods are cheaper to purchase and easier to machine. Smaller screws conduct less heat, making them less likely to melt the plastic that supports them. A smaller hotend overall has a smaller melt zone and is quicker to heat.