Extended-Length HD Blank Fixture Plate for Rottler CNC Machines

Build custom workholding for longer heads or several small heads on a compatible Rottler CNC machine. The HD extended-length blank is about half an inch thicker than our standard blank to provide rigidity across the longer span. The machine-side mounting holes and end slot are already machined. Cut your own workpiece-side bolt pattern, locating features, and clearances.

Machine compatibility

The 34-inch length requires a dedicated Rottler head-porting setup. Compatible models are P69A, P69AHD, EM69P, and EM69HP.

For the F69ATC with a Rock and Roll (R&R) trunnion, choose the 28.25-inch Blank Fixture Plate.

Applications

• Set up multiple smaller cylinder heads, including single-cylinder heads, on one plate.
• Make room for longer four-cylinder heads with large cam gear or timing-chain housings.
• Fixture most inline-six heads, including Cummins 5.9L 12-valve and 24-valve heads, 6.7L 24-valve heads, and imports.
• Machine the blank for vise mounting or custom workholding.

Plate details

• Overall footprint — approximately 34 × 8 in
• Approximate usable area — 29 × 8 in. This is a conservative planning estimate based on allowing about 5 in for the headstock and tailstock mounts. Some setups leave more usable length.
• Thickness — approximately 1.45 in
• What’s included — One HD blank fixture plate. Use your existing mounting hardware.

Browse Rottler CNC cylinder head porting fixtures by engine family.