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- เผยแพร่เมื่อ 25 มี.ค. 2020
- Hemera Mount for HevORT MGN Rail CoreXY 3D Printer
STLs at: www.thingiverse.com/thing:423...
CAD: grabcad.com/library/hevort-x-...
You want to know more about the HevORT advanced DIY 3D printer?
WEBSITE....: www.hevort.com
You want to learn and contribute to the project?
FORUMS.....: forums.hevort.com/index.php - วิทยาศาสตร์และเทคโนโลยี
Magnificent, thanks for releasing this.
I love your printer build.. Will there be a plan to upgrade this Mount for the 12mm belts? I am building the HD unit but so far there is no X carriage for Hemera and 12mm belts
Is an coustum Version for BIQU Hemera clones out there?
CAn you still go at 500mm/s speed ?
Should have used that linear rail on the top, they are designed to be used facing up (because of rolling elements used in this kind of bearing (balls))
Not as per the Manufacturer Specs. They can be mounted in all directions due to them using (balls). See page 14 of this 214 page document: www.hiwin.com/pdf/linear_guideways.pdf
MirageC yes, as I can read there is clearly stated “3 ways of mounting” and they are all mounted by carriages up. I am working at DMG company where we build Gildemeister CNC centers and all the rails are used flat, never upside down.. we use 2 more rigid rail when mounted perpendicular to the base of machine. I mean with 3D printers it’s not a huge deal, but it definitely reduces the lifespan and increase wear on that bearings when used wrong.. Same as if you put axial ball bearing between parts that have to withstand radial and axial forces. The bearings wear 3times quicker.
This balls are running in a V-slot on this mini rails, there is no difference if the load is on top or bottom of that V. The benefit of it mounted on downside is less vibration on the nozzle since it is closer to the rail (afaik).
@@markus7660 I've been curious about this mounting of linear rails as I'm trying to build one I can use without it wearing down even if I run it 24/7, 7 days a week. Are there any good resources to learn more about mounting of rails? Also, you wrote that you use 2 more rails when mounting perpendicular. Do you mean you would use 3 rails in total? Also, how do you mount it on the bottom, but still facing upwards?
Can do something similar, but without Hemera? Let's say some BMG Aero - no?
A few more configurations are being created. You can see the available options here: miragec79.github.io/HevORT/componentselection.html
why aren't there any mounts that have that giant weight of a stepper motor underneath the actual rail. to reduce flex as much as possible.
You may reduce torsion at rest, but deporting the center of gravity from those big extruders under the x cross member will create a pendulum effect when moving in XY. By installing it in the front we can limit the vertical distance between the extruder CG and the rail, therefore reducing potential moment in y accelerations.
@@MirageC
any kind of wobble it's going to have from X movement will be EXACTLY the same infront of the "cross member" as you get when it's hanging underneath it.
and you only get Y movement on the crap ass box printers. (prusa style is better. i can build 2 or maybe 3 printers out of the frame material that goes into 1 single box printer)
i don't own whatever the HevORT is. this is just one out of verry few video's with the hemera on an mgn rail. and the only one with the mgn rail undernearth the extrusion. and it just frustrated me so goddamn much that you STILL had the whole thing infront of the extrusion instead of underneath it. that i just had to complain.
i did not pay any attention what so ever at what kind of printer you have. nor did i care.
i just wanted to vent my frustration having to design my own goddamn carriage because nobody does it right.
in your situation shortening the path does indeed reduce it. IN ONE AXIS ONLY (and it's still there.)