Yet Another Filament Joiner
Description
The Heart Of This Filament Joiner Is An Aluminum Heater Block With A Traditional Extruder Heater Element And Thermistor Mounted. It Works Similar To An Extruder And As Such It Is Connected To The 3D Printer. In That Way You Can Use The Printer Interface To Regulate Temperature. On My Printer I Mounted A Quadruple Switch Between The Two Thermistor Cables And The Two Heater Cables To Select Between The Joiner And The Extruder. An Additional Led, Parallel To The Heater, Indicates Whether Or Not It Is On. The Heater Block Consists Of Two Halves Which Are Screwed Together. A Hole Of 3 Mm Is Used To Position My 3 Mm Filament. 1.75 Mm Is Also An Option Of Course. Two 40 Mm Fans Continuously Cool The Filament That Sticks Out Of The Heater Block. The Two Pieces Are Held By Two Clothes Pins. Make Sure The Filament Is Held Tension Free. And If You Don'T Cool It, It Might Melt And Deform Outside The Heater. How To Use: Cut Two Pieces Of Filament Under A 70 Degree Angle Using The Filament Cutter, A Razor Blade And A Hammer. Remove The Top Half Of The Heater Block. Position The Two Pieces Of Filament Under The Right Angle Against Each Other. Mount The Top Half Of The Heater Block By Fastening The Screw And Switch The Heater On. Wait Until The Desired Temperature Is Reached And Switch The Heater Off. Now Wait For The Whole Thing To Cool Down To Under The Glass Tranistion Point Of Your Filament And Open The Heater Block. It Creates Welds That Do Not Have A Larger Diameter Than The Hole In The Heater Block. Therefore Filament Jams Due To A Too Large Diameter Are Avoided.
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