just curious what is the max bed size a k40 can be upgraded to?
Practically speaking, 300x200mm. After that you’ll need to replace too much to make it worthwhile.
Yeah that’s about right - I’m at 350x215 rail to rail by taking out the base plate (replaced it with a set of aluminum sheets that I can build up to allow for different thicknesses of material) and cutting out the exhaust scoop.