Need an end cap for your new CNC Mill, 3D Printer, or Lasersaurus T-Slot aluminum extrusion? With or without holes? Single or double wide? Look no more - why buy when you can print! This OpenSCAD model lets you create an end cap by making a few measurements or looking into the extrusion data sheets. Warning: You may need to repair the generated STL files with netfabb. Trying to work out why OpenSCAD is generating a non-manifold object. If you can work out why please comment. You can easily set: If you've got the extrusion data sheets then your in luck as most of the dimensions will be already to hand. Otherwise measure: Base of T Slot: T Crossbar: Top of Crossbar: Most extrusion tapers at the top of each T slot void, this is modeled with a trapezoid joined to the top of the crossbar The OpenSCAD is configured for a Felix Printer to generate an end cap for a JANSJÖ IKEA LED lamp modification as shown. But don't let that limit you, download and modify as needed. All parameters are fully documented in the code. NEW! Use Customizer, modify and download your new end cap straight away!