Odd End
Odd End
Release status: Experimental
Description | Small, High-Performance Hot-End
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Introduction
This is a small, high-performance designed for 1.75mm filament. It was designed with two goals in mind: speed and size.
It features:
- Small size
- Hybrid PEEK/PTFE liner for strength and low friction
- Aluminum nozzle and heater block for optimal heat transfer
- Power resistor heater
Inspiration
The odd end takes inspiration from two existing designs, the MakerBot mk7, and the MakerGear v3. I liked the size of the mk7 (it's ~15mm shorter than anything else common), but didn't like the stainless steel thermal barrier. And I love everything about the v3 except it's length. So I combined the general form of the mk7 with a hybrid PEEK/PTFE thermal barrier, and a set screw for retaining the PTFE (as in the J_Head_Nozzle design). I also used a mk7-style butt joint between the thermal barrier and the nozzle. Initial testing hasn't showed any signs of leakage.
Bill Of Materials
Item | Type | Quantity | Notes/sources |
Thermal Barrier | Machined | 1 | |
Heater Block | Machined | 1 | |
Nozzle | Machined | 1 | |
PTFE Liner | Hardware | 26mm | McMaster-Carr PN: 52335K32 |
Hollow-Lock Set Screw | Hardware | 1 | McMaster-Carr PN: 91318A350 |
Power Resistor | Electrical | 1 | Digi-Key PN: UB5C-5.0-ND |
Thermistor | Electrical | 1 | Digi-Key PN: 495-2125-ND |