A Dragon (& Dragon HF) hotend model that can be printed with minimal supports for toolhead mockups.  Changes from the original model include:

• Simplified geometry and removed overhangs where possible without impacting overall dimensions
• Enlarged central heat break for strength and printability

V6 nozzle can be threaded in.  I wanted to test-print and try out a handful of different toolheads while keeping my existing Dragon HF hotend.  This let me try a few different options without having to disassemble my printer first.

I secured it to the test toolheads using 4 X M2 self tapping screws.

Supports are only needed below the round heat break section.  I used painted-on supports for that.