DELTACORE - "new" kinematics on Marlin Hi, I want to share "new" kinematics combination I implemented - deltacore. Z axis is regular, while X and Y work like delta but in one plane. It is named similar to corexy, because when two motors work in same direction it is only X-axis movement, and when motors work in oposite directions it is arc movement mostly in Y-axis. Check it out here: https://www.youtube.com/watch?v=YO74M19ytRc mod_embed_images_loadimage('9c71868c8ee31a40f5d5758e912f840c', '/forum/thumbcache/3ea/f62/eda/048/5a9/5d1/ef0/5b2/e63/28a/92_800x400.png', 'https://reprap.org/forum/file.php?2,file=121380,filename=deltacore_prototype_2024.jpg', 'https://reprap.org/forum/addon.php?2,module=embed_images,check_scaling=1,url=https%3A%2F%2Freprap.org%2Fforum%2Ffile.php%3F2%2Cfile%3D121380%2Cfilename%3Ddeltacore_prototype_2024.jpg', '', 896815, 800, 400, 'Loading image ...', false); In advance of any questions - I did it because I could, there are very few benefits and much compromises. Main supposed benefit is ability to use heavy linear rails and ball-screws, but keep toolhead assembly ultra light. Second, questionable, is ability to make entire bed assembly easy swappable, or collapsable to save space when not in use. But all good is overshadowed by small shield-shaped printable area, which is equivalent to bed slinger but without corners. If you for some reason interested in bulding another deltacore "unicorn", I made it relatively easy on software side. Without clue how to do it using existing kinematics, I copied how delta is implemented in Marlin. Everything tested except sensorless homing and bed leveling (only bilinear augmented, other theoretically should work as is). Here is cleaned Marlin-2.1.2.2 with only deltacore-related changes: "Marlin-2.1.2.2-deltacore-clean.zip" at Medifire - 9.26MB And here is my bulid with other junk but gurantee to compile: "Marlin-2.1.2.2-deltacore-prototype.zip" at Mediafire - 9.34MB https://reprap.org/forum/read.php?2,896815,896815#msg-896815 Fri, 05 Jun 2026 19:19:04 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?2,896815,896819#msg-896819 Re: DELTACORE - "new" kinematics on Marlin https://reprap.org/forum/read.php?2,896815,896819#msg-896819
For example, look into the first attached image here: [reprap.org]]]> VDX Developers Fri, 09 May 2025 04:28:59 -0400 https://reprap.org/forum/read.php?2,896815,896818#msg-896818 Re: DELTACORE - "new" kinematics on Marlin https://reprap.org/forum/read.php?2,896815,896818#msg-896818 Any clue what patent it is or who owns it?
I quite ignorant about state of modern patent law, but can it possibly cover "providing software which facilitates functioning...", this is just math equasion.
And are there places where bulding patented design in privacy of your home is actually punishable ?]]> GIRATOR Developers Thu, 08 May 2025 15:42:17 -0400 https://reprap.org/forum/read.php?2,896815,896817#msg-896817 Re: DELTACORE - "new" kinematics on Marlin https://reprap.org/forum/read.php?2,896815,896817#msg-896817 dc42 Developers Thu, 08 May 2025 14:26:59 -0400 https://reprap.org/forum/read.php?2,896815,896816#msg-896816 Re: DELTACORE - "new" kinematics on Marlin https://reprap.org/forum/read.php?2,896815,896816#msg-896816 VDX Developers Wed, 07 May 2025 11:32:39 -0400 https://reprap.org/forum/read.php?2,896815,896815#msg-896815 DELTACORE - "new" kinematics on Marlin https://reprap.org/forum/read.php?2,896815,896815#msg-896815 Z axis is regular, while X and Y work like delta but in one plane.
It is named similar to corexy, because when two motors work in same direction it is only X-axis movement,
and when motors work in oposite directions it is arc movement mostly in Y-axis.
Check it out here: https://www.youtube.com/watch?v=YO74M19ytRc


In advance of any questions - I did it because I could, there are very few benefits and much compromises.
Main supposed benefit is ability to use heavy linear rails and ball-screws, but keep toolhead assembly ultra light.
Second, questionable, is ability to make entire bed assembly easy swappable, or collapsable to save space when not in use.
But all good is overshadowed by small shield-shaped printable area, which is equivalent to bed slinger but without corners.

If you for some reason interested in bulding another deltacore "unicorn", I made it relatively easy on software side.
Without clue how to do it using existing kinematics, I copied how delta is implemented in Marlin.
Everything tested except sensorless homing and bed leveling (only bilinear augmented, other theoretically should work as is).
Here is cleaned Marlin-2.1.2.2 with only deltacore-related changes:
"Marlin-2.1.2.2-deltacore-clean.zip" at Medifire - 9.26MB
And here is my bulid with other junk but gurantee to compile:
"Marlin-2.1.2.2-deltacore-prototype.zip" at Mediafire - 9.34MB
]]> GIRATOR Developers Wed, 07 May 2025 10:44:49 -0400