Anycubic i3 Mega extruder for flex or TPU filament
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3D model description
Yet another extruder for printing flexible filament on the Anycubic i3 Mega. Designed to be used with 4mm PTFE tube, only need about 20-25mm. Reuses the original silver collet. Install the collet with an M6 nut or my replacement printable insert nut, insert the PTFE until it stops, and then trim it to fit using a sharp razor.
I also used a tapered diamond file to open up the end of the PTFE tube to a cone shape to help guide the filament during loading, although that step isn't strictly necessary.
You'll see there is also PTFE tubing below the feed gear as well - this is only for convenience during filament loading - same with the nut that screws into the lower portion of the extruder. The nut has a funnel shape which helps guide the filament into the proper location for loading - I was constantly having trouble finding the lower hole and then getting the filament loaded to the right spot. Having the lower nut and a section of PTFE tube helps guide the filament to the right spot on the gear. With this in place, I push in the filament until it stops, and then turn the extruder with my extruder knob (pictured in the last photo) to load it the rest of the way. If you don't want to bother with the PTFE tubing in the bottom, I've got a variant of the lower plug which has a guide tube that replaces the PTFE.
- 3D file format: F3D and STL
- Publication date: 2020/01/30 at 03:37
Note: I wanted to try Cults3D as a possible alternative to Thingiverse, but after giving it a bit of a look, I'm not super impressed. Feel free to visit my Thingiverse page if they can manage to keep that site running:
I went to school as a mechanical engineer, and got interested in 3D modeling, specifically the SDRC I-DEAS CAD/CAM software system. This interest got me my first job working for a CAD/CAM reseller doing pre and post-sales support. I was lucky to be involved in 3D printing in the early 90s - for a demo of rapid prototyping, I modeled the mouse from my HP-UX CAD workstation and it was rendered via stereolithography. I still have that model, but across the years I stopped using CAD and moved to systems administration. Now that 3D printing is affordable and mostly reliable, I've gotten into it and am having a blast. I printed all the usual cute little trinkets and tchotchkes, but quickly got bored of that. What I find most interesting is needing something, then spending a little bit of time in a CAD program and soon after that having a real, functional version of the part in my hand.
I'm a cyclist and bike mechanic as a hobby and a side job, and have found endless applications of 3D printing to both bikes and bike maintenance. Coworkers have also come to me with many varied requests, each of which has been an interesting challenge and an opportunity to learn.
I am constantly learning, constantly trying to challenge myself to learn new things and technologies, so hopefully as I progress my designs will continue to improve.
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