While I was thinking about a temp controller circuit I had the idea to build a little mechanism where you can put two filament ends in and melt them together.
It could basically be a little metal tube cut in half and drilled out to either 1.75 or 3mm hold in block of heat resistant stone or plaster with a hotend 40watt cartridge and a thermistor attached.
Once heated up you put the end in so some seconds, open it up and have continuous filament.
The same heater circuit could also used in a acetone chamber where the cartridge get replace by a heated bed.
Parts:
Solid metal tube like the 8mm straight rods in our printers.
Temp controller like this come already with a thermocouple
http://www.ebay.de/itm/AC-220-V-Digital-PID-Temperatur-Kontrolle-Thermoelement-Controller-0-bis-400-/281291174288?pt=DE_Möbel_Wohnen_Sonstige&var=&hash=item417e42b190
A 12V 40watt hot end cartridge
http://www.ebay.de/itm/Cartridge-Heater-12V-40W-1-5m-Heater-Cartridge-Heating-Element-for-3D-Printer-/361098962779?pt=DE_Computer_Sonstige&hash=item54132ce75b
It could basically be a little metal tube cut in half and drilled out to either 1.75 or 3mm hold in block of heat resistant stone or plaster with a hotend 40watt cartridge and a thermistor attached.
Once heated up you put the end in so some seconds, open it up and have continuous filament.
The same heater circuit could also used in a acetone chamber where the cartridge get replace by a heated bed.
Parts:
Solid metal tube like the 8mm straight rods in our printers.
Temp controller like this come already with a thermocouple
http://www.ebay.de/itm/AC-220-V-Digital-PID-Temperatur-Kontrolle-Thermoelement-Controller-0-bis-400-/281291174288?pt=DE_Möbel_Wohnen_Sonstige&var=&hash=item417e42b190
A 12V 40watt hot end cartridge
http://www.ebay.de/itm/Cartridge-Heater-12V-40W-1-5m-Heater-Cartridge-Heating-Element-for-3D-Printer-/361098962779?pt=DE_Computer_Sonstige&hash=item54132ce75b
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