Wildseyed Simple Hot End
Release status: Working
| Description | Wildseyed Simple Hot End
|
| License | GPL
|
| Author | |
| Contributors | |
| Based-on | [[]]
|
| Categories | |
| CAD Models | |
| External Link |
Design Goals
- Simple construction with readily available tools and materials
- Reliability
- Easy Removal
- Low Cost
Tools Required
- Drill Press
- Drill Bits
- Hack Saw
- Tap and Die Set
- Large Pliers or Vice Grips
- Flat File
- Caliper
- Scissors
- Soldering Iron
- Barrel Crimp Tool
- Small Brush or Cotton Swab
Materials Required
- Aluminum Block - 1" x 1/2" x 1/2" (LxWxH)
- Brass Coupling - Air Hose Type Female 1/4"
- Copper MIG Type Welder Tip - 0.025/0.6mm
- Set Screws - M4x5mm(1), M4x10mm(4)
- PTFE Rod - 1.5" x 1/2" (L x D)
- Thermistor - 100k, Glass Bead
- Power Resistor - Aluminum Encased, Dale 5 Ohm 1% 5 Watt
- Kapton Tape
- Emergency Tape
- Heat Sink Compound
- Crimp-on barrel connectors - Small
- Small Alligator clips
- Insulated Wire - Teflon preffered, but any will do
- Plastic Ties
Assembly in Seven Easy Steps
- The Aluminum Block
- The Brass Coupling
- The MIG Welder Tip
- The PTFE Rod
- The Thermistor
- The Power Resistor
- The Wraps
Step One - The Aluminum Block
Step Two - The Brass Coupling
Step Three - The MIG Welder Tip
Step Four - The PTFE Rod
Step Five - The Thermistor
The thermistor is the most likely cause of failure in any hot end. It is very fragile, and subject to shorts if not installed properly. Careful installation will ensure reliable operation, and accurate temperature measurements.
For this step, you will need a 100k Thermistor, and several lengths of Kapton tape. The goal is to encase the thermistor in several layers of capton tape, to insure that the leeds are insulated and supported, while still exposing as much of the glass bead as possible to direct contact with the heated surface.
