Cam Hold Down - GoldenRatio aka Fibonacci Spiral for Shapeoko and Other CNC's

thingiverse

Looking for Hold Down Options for Your Projects? This Version Uses a 1/4 Inch Hole That Can Be Used with Many CNC, Laser Cutter, and Other Projects Requiring a Flexible, Fast Hold Down System for Anchoring Your Material. We Have Been Using the CNC's at 757 Makerspace for Months and Testing a Wide Range of Materials for Various Projects. One Thing We Found is That When Using a Spoiler Board (Aka Sacrificial Layer), Screwing Down Work Puckers Up the Material and Sometimes Interferes with Your Project Material. Recently, We Have Been Drilling Our Spoiler Boards to Accept 1/4 Inch Holes Every Two Inches in the X and Y Position. This Allows Us to Anchor Our Material Using a Wide Range of Options. The Latest Design We Have Been Using Is the Rotating Cam Method to Get Tighter Contact with Materials That Vary Slightly. We Settled on the Golden Ratio or Fibonacci Spiral as the Basis for Our Design. If You Find This Useful, Please Take a Moment to Write a Comment and Click Like. Enjoy Making On! Instructions: There Are Two Designs Included - One with a Rotating Path and the Other with Two Holes. Field Note: The Rotating Path Is Okay, While the Two Hole Design Seems to Work Better (Single Point of Rotation). The Original Design File Is Included as a Closed Polyline in .DWG and .DXF Formats, and an Extruded Version (.STL) That's 1/2 Inch High. Anyone Interested in Printing or Cutting/Milling Can Use This File. Simply Attach a Suitable Bolt or T-Nut System, Rotate for More Pressure, and Secure Your Design for Optimal Results.