I just got an old Ender 3 for cheap and wanted to replace the crappy extruder with a nicer bowden extruder of my (now) direct drive Kobra Max. When I connect the new stepper, nothing moves. It's a longer stepper and a different manufacturer. Is the wiring different or VREF wrong or are there other reasons why it wouldn't move? The driver is good, since the old stepper is still working.

Thanks for any help!

Has anyone thought about printing narrower lines in order to get sharper corners? Once Linear advance or Pressure advance is activated, you don't get bulging corners anymore... but can we do better?

Has this been implemented anywhere yet? Does it have a name?

Hey, I've recently designed a Poster about the FHS since I often forget where I should place or find things. Do you have any feedback how to make it better?

Edit: updated with new version

Hey, I've recently designed a Poster about the FHS since I often forget where I should place or find things. Do you have any feedback how to make it better?

I updated the poster: https://whimsical.com/fhs-L6iL5t8kBtCFzAQywZyP4X use the link to see online.

Dark mode

Old version

Hey, I've recently designed a Poster about the FHS since I often forget where I should place or find things. Do you have any feedback how to make it better?

Edit: Put up new version

Dark mode

This Halloween I finally realized my dream from years ago, an articulate T-Rex tail. Unfortunately I didn't have the time to also create a mask/ helmet that goes with it. That's gonna be for next time. The thing is modeled in blender and printed in vase mode. The individual pieces have four holes drilled in and are held together by wooden rods. I initially imagined keeping them together with printed buttons but the rod design worked perfectly on a small scale model.

This video by dizekat shows a new kind of kinematic system based on string. It should be possible to make very fast but cheap printers like this due to low inertia of the system. Very interesting!

In my last post I described how I mounted the Orbiter v2.0 to a Kobra Max in a makeshift fashion. This time I show you how the finished mounting looks like.

Previous attempts. The ones in white worked but had the extruder dangle, the black ones failed to be mounted for various reasons.

Find the stl and Freecad file here.

I've been looking to switch the bowden extruder for a direct drive type on my Anycubic Kobra Max. I've always hated the blobbing and stringing due to the bowden mechanism. After having received an LDO Orbiter v2.0 today and a bit of tinkering, I now have what I was after :).

The easiest way to install the new extruder was to simply attach it on top of the existing hotend via a small bowden tube and a coupler. I had to design a little adapter flange that attaches to the extruder and accepts a tube coupler. The extruder now dangles in the air. For now this didn't seem to cause any trouble. In the future I might install it using a fixed bracket though.

While I was at it, I also added some additional insulation to the bed (300x300mm in size, so I had to cut a bit). I'm not sure if it really helps a lot but the bed now heats up from 20° to 60° in 3:40 instead of in 4:00. The printer also seems to consume 100mA less (very inaccurate mental averaging of power meter).

Bonus: First functional part printed with new setup, rectifying some of the original parts issues.

Up next: Get a second Orbiter and have it feed a mixing hotend. My goal is to make nice Lampshades.