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My notes on the Trinity Magma Jhead, assembly. =
Magma Jhead - recommendations, most of these probably would extend to the trinity magma hotend. This document is released into the public domain.
- Wrap a layer of polyamide (kapton) tape around the block.
- With a small sharp knife, poke a small hole in the tape to put the thermistor in.
- Cut a larger hole for the heater cartridge.
- Use a small layer of aluminum foil to shim the heater cartridge.
- Trim extra foil, especially around any exposed wires.
- Wrap a couple of layers of polyamide tape over the connection point of the cartridge for insulation.
- Install thermistor wiring, route it alongside the heater cartridge.
- Use tape over the thermistor opening and wrap around the wires as well to better-secure it.
- Add a small ziptie.
- Trim off any excess tape.
- Mount a 40mm fan to cool the heatsink. This is not strictly necessary with ABS, but you will want a retention method that isn't plastic if you don't do this. I ended up screwing the fan into the groovemount bracket at http://www.thingiverse.com/thing:1574012.
- Wrap a thin layer of foil over the heatbreak, screw the flat end into the block.
- When done it'll look like http://i.imgur.com/QCrMH0z.jpg
Tighten hot to get a good seal.
All Magma Jheads are 0.4mm / 3mm
For a Trinity Magma hotend, seal the nozzle into the heatblock, and then install the break into that. You still want a fan cooling the sink. If you have some way of retention you could insert 3mm OD/2mm ID PTFE down the barrel to the nozzle, but don't exceed 240C in the nozzle if you do this and be careful that the edge is cut square. You also will largely be wrecking the melt chamber (fwiw the e3d lite6 runs the ptfe down to the nozzle itself but the melt chamber is still there).