The Doot Changer (Formerly known as Hypercube Evolution-S) (Alpha)

thingiverse

It seems like you're sharing your thoughts and experiences with designing and printing 3D printers, specifically CoreXY printers. You've got some valuable insights and warnings to share with others who might be following in your footsteps. Here are some key points from what you've written: 1. **Leveling:** You advise against using four-corner leveling as it can cause warping issues. Instead, you recommend three-point leveling for a more stable and even bed surface. 2. **Heated Bed:** You strongly suggest using at least a 3mm thick aluminum heated bed. This is because thin, cheap PCBs might not provide the necessary heat distribution and could lead to warped or ruined beds. 3. **Power Supply:** You highly recommend using a 24V power supply for your printer. If a suitable PSU isn't available, you suggest using a MOSFET and a separate PSU for the heated bed or even an AC heated bed (with proper precautions). 4. **Grounding:** Grounding the frame can help with interference issues. 5. **Extruder:** You recommend a 3:1 gear ratio extruder and specifically mention the TriangleLab BMG as a good option. 6. **Dampeners:** You advise against using dampeners for the XYE steppers in CoreXY printers due to their sensitivity to belt tension and angle. If you do use them, make sure they're decoupled from the belts. 7. **Couplers:** Self-centering couplers are highly recommended, especially if you can afford them. Normal ones work but might be more prone to errors. 8. **Z-Axis Design:** You mention an interesting idea of treating the Z-axis like two separate 2-rod axes, which could improve alignment and stability.