Nibbler tool for sheet metal cutting has been one of the essential tools for modding and hacking, it has been the tool of choice for cutting out brackets and heat sinks from materials sourced from metal enclosures collected from old computer DVD drives.
The hand nibbler tool has provided an opportunity to recycle old household electrical enclosures in to something new when added to 3d printer printed designs. The sheet metal nibbler has worked very well for me, operation is easy, quiet and clean and importantly, convenient and accurate.
The new 3D printer 1.75mm filament extruder upgrade is now complete, all the tweaks mentioned in part two are now built in to the unit, plus extra improvements was made to the overall design, including a newly designed idler to accept the cheaper 608 ZZ Skate Bearing to simplify assembly and to keep the overall cost down. All the project files are now on Thingiverse, STL files and OpenSCAD 3D script file. Look down the post for bill of materials and assembly tips.
After nearly 15 hours of printing, I’m calling this new 3D printer extruder a success. The success I believe is down to building the complete extruder assembly in OpenSCAD which allowed me to see how all the parts fitted together. The 3D printer extruder is boasting a unique feature not seen in other popular printer extruders, a rubber pinch roller bearing in the idler, more details down the post.