6" x 12" Back Bolt Fixture Plate | CNC Workholding for 3-Sided Machining | McChine

Unlock full 3-Sided Machining on your 3-axis mill with the McChine 6" x 12" Back Bolt Fixture Plate System. Our innovative bottom-up workholding and "picture framing" technique eliminates the need for soft jaws and complex setups, saving you hours in programming and machine time.

Key Benefits:

• Achieve 3-Sided Machining: Gain complete, unobstructed access to the top of your part, then easily stand the fixture on its side to machine features on two additional faces—all without unclamping the part from the plate. This reduces setups, eliminates re-fixturing errors, and increases overall accuracy.

• Eliminate Top Clamping: Our innovative back-bolt system secures your workpiece from the bottom, providing total access for profiling and engraving without clamp interference. This is ideal for the "picture framing" machining method.

• Rapid & Repeatable Setups: The precision grid of locating holes allows for fast, accurate, and repeatable positioning of your stock for consistent results on every part.

• Seamless Vise Integration: Designed for a perfect fit in any standard 4" or 6" machine vise, integrating effortlessly into your existing setup.

What's Included:

• (1) McChine 6" x 12" Back Bolt Fixture Plate

• (1) McChine 8-32 Back Bolt Assembly (10-Pack)

Specifications:

• Dimensions (Actual): 0.950" x 5.950" x 11.750"

• Material: 6061-T6 Aluminum, Precision-Machined Flat

  • Through Holes: All 924 holes have a .177" diameter through-hole.

  • Locating Rows: Six of the rows include a .1875" diameter counterbore, .100" deep, for accurately locating stock.

    Grid System: Features a total of 924 holes arranged in 21 rows and 44 columns on a precise .250" x .250" grid.

     

• Vise Compatibility: Fits standard 6-inch machine vises (e.g., Kurt, Tormach, SMW Mod Vise).

Downloads

Download 3D CAD Model (STEP)

Download Technical Drawing (PDF)