Filament Fuser Block

Fuse filament to make multi-color prints!


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The Fuser Block enables you to securely fuse two ends of 3D printing filament together in about 10 seconds. With this tool you can recycle leftover filament, extend the length of your filament spools for long prints, and add color changes to your prints!

The printed parts enable you to safely hold the heated block under a hinged guard, and clamp everything to the side of a table. It works on 2.85mm and 1.75mm filament in any printing material. The Fuser Block is controlled by plugging the (3) two-pinned connectors into your existing 3D printer controller, so you can precisely control the temperature!

Complete assembly and use instructions are now available on 3D here: See image attached for recommended print settings.

7-4-16 Update: Now included is a printable jaw cover that fits on standard 6" slip joint pliers. Using grooved pliers to squeeze a freshly made warm joint with as it cools helps compact it and further strengthens the bond!

Materials and methods

These 3D printing files are shared with you here for FREE, but to complete the assembly you'll need the associated hardware kit available from the EngineerDog Parts eBay store here:



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2fa3d94ec51b26f7a42d48a595cfb80c?default=blank&size=40First Amendment added this to the Printer Mods collection ago
Mini kremenkoNestasko0310 added this to the ispis collection ago
7667ed3f9e90ed7e584269da8cfa62b5?default=blank&size=40Kim Watson added this to the Printer Mods collection ago
Mini bad clown  custom Jari commented ago

on the link for the instructions is nothing - no how-to ??

Mini bad clown  custom Jari added this to the 3D DRUCKER + ZUBEHΓ–R collection ago
02c0e4a45277fae90fd149455014b3d2?default=blank&size=40Saqhara added this to the Filament Mods collection ago
4bc95d517cb5e38bf66fbd8cadb99119?default=blank&size=40william pashia added this to the joiners collection ago
Mini imageIzzy added this to the Of interest collection ago
Edf1ec9389ed3b6d07ad632eb3b8e937?default=blank&size=40Christian Bosna Eder added this to the Usefull collection ago
8f391d7db8e16fb7e99f5964b4a57563?default=blank&size=40Raymond added this to the 3d printer tools collection ago
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Mini engineerdog headMichael published this design ago