This is a collection of parts and information for building the Extender 400, a 400x400x250 Ender 3 Extension kit

To accomplish this project you will have to have a wide variety of skills and tools.

For more information join the Facebook group Ender XL Builders Club

List of things in this collection

Y Axis Alignment Tool - used to position the Y Axis bar for the Ender 3 PRO Y End Stop Pro Only - used for the kit with 495 mm long Y axis. Phasing this out, but you might need a replacement someday if your kit included one. Y Motor Mount Non-Pro - Revised motor mount for the Non Pro version of the kit (400mm bed upgrade) (may be phased out later, but if your kit included one, you may need a spare some day) Y Belt Tensioner2 (Non Pro) - Belt tensioner bracket (400mm bed upgrade) (may be phased out later, but if your kit included one, you may need a spare some day)