This is the CAD file for the Regnans CoreXY.

Regnans aims to achieve a very balanced machine combining simplicity, performance and a large build volume. It is designed with several principles in mind:

• Simple design and maintenance. All parts are easy to access. It doesn't require Klipper, networking, extra processing. Everything is done using a basic board like an SKR 1.4 or Octopus (now that Marlin has input shaping).
• 24V everything. In some countries, working on mains power requires a licensed electrician. Regnans is designed so that everything beyond the main power supply is 24V
• Big build volume. The original X5SA can achieve 330x330x400. Regnans expands that to 350x350x430 by making use of smaller motion system components, and a compact extruder.
• Performance - Won't get to VZBot speeds, but can still outrun most hotends. Machine limits are typically set at 350mm/s and 10-20k accel.
• Must be quiet. Had to be similar in quietness to my Prusa Mk3s.
• Relatively easy to enclose. Most main components are now inside the old X5SA frame.

Regnans is designed to use:

• SKR 1.4 or Octopus Pro (SKR 1.4 requires an older electronic case design)
• 2209 drivers
• Mini 12864 and/or BTT TFT35v3.0
• BTT 30A mosfet for the bed
• Keenovo Silicone Heater Pad 330mm X 330mm for Tronxy X5S
• A 350x350 bed (I used a 6.25 Alca 5 tool plate)
• Dragon HF hotend
• LGX Light Extruder (The extruder sits on a small carrier, so can easily be redesigned for other small extruders)
• A Meanwell UHP-750-24 power supply (Or cheaper alternative. I wanted a fanless PS, but the UHP is not cheap).
• Carbon fibre gantry and MGN9 rails for X and Y

The build can (probably) be done in stages. The order that would probably work is this (but be aware I built this over a long time and can't guarantee that this won't conflict with original parts).

• Electronics (swap X5SA with updated electronics)
• Power Supply (upgrade the 500W power supply to the 750W needed for the bed)
• Bed (but not the inboard rods and motors)
• Gantry/extruder/hotend/etc
• Inboard bed rods and motors (to bring the bed entirely inside the frame)
  

This is not a simple build. It requires drilling and tapping the rails of the X5SA and drilling and cutting the carbon tube. I've included templates for drilling.