Leave on tool holder attachment for 2x v4

V4 increased the width of the arms to prevent cracking when inserting the gauge. Also uploaded Inventor Part file for community modifications. Added an STL with multiple mounting points. Improved the design to maximize stability and provide a better platform for the dial gauge. Added connections on the side for attaching tools giving maximum flexibility. The one piece clips onto the heat sinks of the 2x and provides a platform for other tools to be attached to. It's designed specifically to be left on the printer and it doesn't interfere with normal printing or leveling. Any attachments just need a notch so they can slide on and off the front end. I've included one attachment which is a holder for a dial gauge for leveling. I would encourage anyone to come up with additional useful attachments.