I have decided to upgrade my K40 by building a new frame supporting the XY rails and to increase the cutting area to 620mm X 450mm | K40 Laser Cutting Engraving Machine
Free STL file K40 linear rail upgrade・3D printable model to download・Cults
Time for my K40D baby to grow a little :) MGN sliders on all - Lasers - Maker Forums
Free STL file K40 linear rail upgrade・3D printable model to download・Cults
K40 Laser Adapter for MGN12 Linear Rail - 3D model by mds31781 on Thangs