Ender 4 carriage template
thingiverse
This is a template for the Y carriage when switching to linear rails. One version fits stock idlers with a 4mm bolt and a 5mm hole, while another is designed for larger idlers featuring a 5mm bolt. Place this template on a 1/4 inch plate of 6061 Aluminum alloy. Next, drill out the design and cut it to size. I successfully used three MGN12 300mm Linear Rail Guides with MGN12H Carriage Blocks to complete the build.
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