J-Head Lite
Release status: developement
| Description | J-Head Lite- A minimalistic spin On the J-Head nozzle
|
| License | Creative Commons Share Alike
|
| Author | |
| Contributors | |
| Based-on | |
| Categories | |
| CAD Models | |
| External Link |
Introduction
No sugar added!
The main difference in this design is the use of off the shelf products and technology to build a more economical hot end. For example, the heat sink is actually just a simple plumbing cap with a hole through it and mounted with a brass nut. The holder uses 1/2" reprocessed PTFE instead of the 5/8" in regular j-heads. The difference in price between 1/2" and 5/8" is substantial.
Please note the .stl file is for reference only. Do not attempt to print your own j-head lite holder.
Made out of:
| 1/2" reprocessed PTFE | (McMaster-Carr # 8803K14) |
| Laser cut oak mounting plate | (Lowes 1/4" Oak) |
| M6x1 stainless steal barrel | (McMaster-Carr # 90024A461) |
| Aluminum heater block | (Clinton Aluminum .3750X.5000 FLT 6061) |
| Vishay 6.8ohm resistor | (Digikey # RWMA-6.8CT-ND) |
| Honeywell 100k thermistor | (Digikey # 480-3135-ND) |
| Brass nozzle | (McMaster-Carr # 8952K33) |
| Ceramic insulation | (Mcmaster-Carr # 87575K85) |
| Heat Resistant Wiring | (skygeek.com # M22759/16-22-0) |
| Copper Heat Sink | (McMaster-Carr # 5520K44) |
To ensure that the PTFE is seated properly, it's best to heat up your extruder and then screw on the holder. This will acount for thermal expansion. It's also a good idea to add PTFE tape to the barrel to lock it in place.
An assembly video is in progress. I'll post it up next month, hopefully.
Buy one for $24.99: http://www.ebay.com/itm/J-Head-Lite-V1-0-Reprap-3D-Printer-Extruder-Hot-End-Nozzle-for-1-75mm-Filament-/261355242110?pt=LH_DefaultDomain_0&var=&hash=item3cd9fc827e
