Bear X Axis and Hemera news
Added 2020-02-10 19:02:38 +0000 UTCI have published some part of the new Bear X axis in the dev branch. This includes the new X ends and new X carriage, you can find them here:
https://github.com/gregsaun/bear_extruder_and_x_axis/tree/dev/printed_parts
New Features of X ends and X carriage:
- The Z bearing clamps have been rotated to allow more space for the Hemera
- The X axis stepper is self centered thanks to a kinematic constraint. It also helps a little to reduce torsion on X motor arm
- More stylish look of X motor mount
- Reduce chances of warping the X motor arm during print
- Cleanup of Fusion 360 sketches for easier editing
- Some light changes to increase stiffness
- X carriage and X carriage back have more room for the cables (which is necessary for the Hemera as well)
- Bottom of X carriage has been reinforced and better prone to wrong length of screws
Keep in mind those files are still a work in progress and they might change slightly before the official release.
I prepared a little guide for the E3D Hemera on Bear X axis. You can access it here if you are curious to see how assembly goes :
https://guides.bear-lab.com/c/r63d85yfkvrohzf1
Note: the X axis guide is not reflecting the new X ends yet.
Enjoy :)
PS: don't judge the print quality of my parts in the guide, they are very bad :D
Comments
Yes there are lots of differences. If we stick to geometry differences we have: extruder higher up on the X axis, Pinda position, extruder height, hotend fan is taking more place. I personally prefer the geometry of MK2S extruder.
Grégoire Saunier
2020-02-11 07:13:55 +0000 UTCHi Greg. Compare the mk2s to the mk3s extruder and X axis, beside of the end-switch and stopper, is there any other difference between them?
Chip
2020-02-11 00:00:53 +0000 UTCi did check the first link on github and and has only stl files, thats why im asking :-))
Christos Goulas
2020-02-10 21:36:20 +0000 UTCI think if you check the stl folder on github, there are notes to each stl file- from a quick glance, the axis ends have some protrusions to, and I quote ,'' increase space for hemera'' , improvements for the cable guide on the carriage, and a kinematic tensioner for the belt idler- whaterver that means- fancy stuff.
Alex Vasile
2020-02-10 21:22:02 +0000 UTC
