Precision Countersinking & Knockouts for Aluminum Extrusions
Punch Tools' custom curtain wall punch presses are engineered to slash installation time while ensuring identical, high-precision punches. Our standalone hydraulic stations allow for the perfect placement of countersunk holes and deadbolt knockouts on complex aluminum extrusions, ensuring a seamless fit for any architectural design.
Mounting curtain wall mullions often requires placing countersunk holes in difficult locations—specifically between screw chaser channels. To prevent deforming the structural integrity of aircraft-grade aluminum, we utilize a proprietary two-part operation:
Step 1: A precision pilot hole is punched in the exact center-line placement.
Step 2: The secondary operation performs the countersink without deforming the screw chasers.
Perspective view of countersunk top punched holes.
Highlighting difficult placement between screw chasers.
Side view highlighting punched side mounting holes.
Larger architectural models face similar challenges. Our standalone hydraulic stations handle these larger profiles with the same two-step accuracy, ensuring no "oil-canning" or structural bowing occurs near the screw chasers.


The Punch Tools Standalone Hydraulic Press: The workhorse behind the two-step punching and countersinking process.
For extrusions requiring integrated hardware, our tooling supports perpendicular punches through screw chasers and deadbolt knockouts across multiple surfaces in a single station setup.



Detailed views of high-precision lockset and deadbolt knockouts.
Don't let difficult countersinks slow down your installation. Get the precision of a Punch Tools hydraulic press.
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