Void 1
Designing a coreXY 3d printer with 250^3 dimensions
Created by
Adnan Osman
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Adnan Osman
added to the journal ago
2/28/2026 Log 3: Mounting Rails
the rails and boredom
After completing the skeleton frame, I thought it would be great to make the mounting rails.
As my frame was 2020 extrusions so I used an MGN12H carriage block with rail.
I did not have any 300mm rail models, so I had to combine 3 100mm rails together to create one.
To attach the rail to the extrusion bar, I used M3x8F bolts. And under these screws I used T Nut - M3 to hold the rail with the extrusion bar.
HONEST REVIEW, Connecting that many screws and T nuts is damn boring
The extrusion rail is 455mm long so I made the rail 300mm long. Leaving 155mm clearance for clean moving.
And if it works well then I guess it's time to jump to the gantry part
Here is the MGN12H with rail
After attaching to the extrusion bar,
Size details
Rail Length = 300mm
carriage block = MGN12H
screws = M3
Connector = T - nuts M3
Bar = 2020 and 455mm long
Adnan Osman
added to the journal ago
2/28/2026 Log 2: Locking in the Frame Geometry
Math is Hard
After an extensive calculation on paper, I confidently assembled a 500x400x400mm frame. Then, while designing the gantry and rails, I realized I built a skyscraper in height or too small in length.
Ahhhh! Life is brutal sometimes
BTW, I know I am not a good engineer
However, after redesigning and resizing, I finally dragged it into a 460×455×390mm skeleton that actually makes sense.
And this useless redesigning took all day😫 I didn't even realise when the sun set, and it's already 12 o'clock.
Adnan Osman
added to the journal ago
Phase 1: Jumping In
I have always dreamt off to design my own 3d printer. So, I’ve decided to stop dreaming and start building my own original CoreXY 3D printer. Juggling this with my HSC board exams is a challenge, but I’m ready to dive into the deep end. I spent hours exploring different printer architectures like XY and ZX systems. I tried to know explore open source models such as Voron 2.4, Rat rig 3.
I’m not a pro yet and I'm sure I'll make mistakes, but I'm excited to see where this journey leads. Hope you guys support me along the way
I generated this AI concept art. It isn't a 100% accurate representation of my current CAD, but it captures the overall vision of the CoreXY machine I'm building.
Ai literally attached the gantry with the left extrusion rail......LOL!
Adnan Osman
started Void 1 ago
2/27/2026 - Phase 1: Jumping In
I have always dreamt off to design my own 3d printer. So, I’ve decided to stop dreaming and start building my own original CoreXY 3D printer. Juggling this with my HSC board exams is a challenge, but I’m ready to dive into the deep end. I spent hours exploring different printer architectures like XY and ZX systems. I tried to know explore open source models such as Voron 2.4, Rat rig 3.
I’m not a pro yet and I'm sure I'll make mistakes, but I'm excited to see where this journey leads. Hope you guys support me along the way
I generated this AI concept art. It isn't a 100% accurate representation of my current CAD, but it captures the overall vision of the CoreXY machine I'm building.
Ai literally attached the gantry with the left extrusion rail......LOL!
2/28/2026 1 AM - 2/28/2026 Log 2: Locking in the Frame Geometry
Math is Hard
After an extensive calculation on paper, I confidently assembled a 500x400x400mm frame. Then, while designing the gantry and rails, I realized I built a skyscraper in height or too small in length.
Ahhhh! Life is brutal sometimes
BTW, I know I am not a good engineer
However, after redesigning and resizing, I finally dragged it into a 460×455×390mm skeleton that actually makes sense.
And this useless redesigning took all day😫 I didn't even realise when the sun set, and it's already 12 o'clock.
2/28/2026 2 PM - 2/28/2026 Log 3: Mounting Rails
the rails and boredom
After completing the skeleton frame, I thought it would be great to make the mounting rails.
As my frame was 2020 extrusions so I used an MGN12H carriage block with rail.
I did not have any 300mm rail models, so I had to combine 3 100mm rails together to create one.
To attach the rail to the extrusion bar, I used M3x8F bolts. And under these screws I used T Nut - M3 to hold the rail with the extrusion bar.
HONEST REVIEW, Connecting that many screws and T nuts is damn boring
The extrusion rail is 455mm long so I made the rail 300mm long. Leaving 155mm clearance for clean moving.
And if it works well then I guess it's time to jump to the gantry part
Here is the MGN12H with rail
After attaching to the extrusion bar,
Size details
Rail Length = 300mm
carriage block = MGN12H
screws = M3
Connector = T - nuts M3
Bar = 2020 and 455mm long