Various Improvements Mk3
After the gantry, the groove plate were installed and the Z-axis was back on, the first improvements were made. Here is the dust protection for the KUS.
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Birdshouse for tool-less assembly
For Christmas, we like to give handcrafted gifts made by our children to their godparents. In spring 2021, both were fascinated by the birds on our terrace, and they always enjoy painting. That's when the idea emerged to mill birdhouse kits with the CNC, which the children could then paint.
My Second CNC Mk2
This second CNC was a kit, a Shapeoko from [myhobby-cnc](https://shop.myhobby-cnc.de/bausaetze/fraesen/6/shapeoko2-kit?c=12).
Seneca, a PC in a suitcase
An Intel I5 6600k, GTX1070, a bit of RAM... nothing special. Except that the PC is built into a suitcase. And water-cooled. And most of the water channels are milled. And the PC can be clamped to the tabletop in an elevated position.
My first CNC
About 15 years ago, I built my first CNC. It consisted almost exclusively of materials from the hardware store. I found the stepper set with driver board for the LTP parallel port on eBay. AliExpress wasn't known back then.
Slotted Plate Mounted
The work surface, the slotted plate segments, I screwed onto the frame using slot nuts and M6 hex screws, as these screws fit exactly into the slots.
Autoset Softlimits after Homing in Mach 4
If softlimits are defined in Mach4, they have to be reactivated every time. But this could be done automatically after homing... Here’s how.
Provisional Loose Bearings
Due to my relocation, I gave away my Shapeoko earlier than planned. So I didn't get to mill the loose bearings. I actually thought I would make up for this first with the CNC MK3. However, the loose ends of the KUS swing up too quickly, which is why I quickly made provisional loose bearings from scrap.
Prototyping successful, now stabilizing
After driving the first meters yesterday, I consider the side walls (portal cheeks) a success. But the POM-C is too soft after all. I originally thought that 22mm would be stable enough, but the servos bend the cheeks effortlessly. I discovered this when I had swapped the plugs of the servo controls, causing the X-axis to try homing at the Y-axis end stop.
Testing the Groove Plate
Shortly before finishing work, I wanted to examine the delivery from Motedis.ch. Since the length of the CNC is adapted to the standard lengths of the AliExpress-KUS, a continuous work surface cannot be created with the standard profiles. There remains a 20mm gap that I somehow still need to close.