Smitty's K.O. Punch Video

Introducing Smitty’s Knock Out Punch!

An Engineered Wood Ceiling and Floor Truss Hole Punch

Smitty’s K.O. Punch is the only tool that will efficiently fix the problems that contractors are having with making holes in engineered wood I-beams. The K.O. Punch is also the only unit with a self cleaning head and does not require a ladder to reach most ceilings. The tool is not just for engineered wood trusses or joists! Smitty’s Tool Company also has a smaller punch assembly with a self cleaning metal punch die for horizontal holes in metal framing studs.

 Electrician operating Knock Out Punch
Inventor pushing Smitty Tool Company's Knock Out Punch
Electrician punching i-joist holes for wire with Knock Out Punch

What is the K.O. Punch?

An Easy-to-Use, Ergonomic Ramped Cam Tool that Packs a Punch

Smitty’s K.O. Punch is a different, more powerful way of creating the holes necessary for running electrical, plumbing or other trade materials through engineered wood ceiling, floor trusses and joists. Instead of drilling or sawing holes, it punches holes through a unique and masterfully designed ramped cam, self-cleaning punch head that creates ½”, ¾”, 1″, 1¼” or 1⅜” holes. The die can changed quickly by slipping the desired size into the head. The tool’s unique use of fulcrums creates an astounding and unstoppable 1 to 132 pound force ratio with 1,500 pounds of pulling force. 

K.O. Punch Features

A Quick, Dependable and Portable Solution

Smitty’s K.O. Punch is the only tool that will efficiently fix the problems that contractors are having with making holes in engineered wood I-beams. The K.O. Punch is also the only unit with a self cleaning head and does not require a ladder to reach most ceilings. The tool is not just for engineered wood trusses or joists! Smitty’s Tool Company also has a smaller punch assembly with a self cleaning metal punch die for horizontal holes in metal framing studs.

SHOP TOOLS
Smitty Tool Company Knock Out Punch Head

How it Works

As soon as the hydraulic tool’s trigger is pulled, hydraulic fluid enters through its standard single acting valve into a rubber line to fill the top of its cylinder through drilled ports. The fluid forces the cylinder rod in the tool’s handle to the cylinder’s base, or butt end. This actuates the piston to pull down on the roller cam to close the tool and knock the hole out OSB webbing, or other materials, with a powerful punch. This creates 1,500 ft/lbs of force! The tool is self cleaning because of the unique, patentable hollow punch die which allows plugs to simply fall out of the die after the punches. As soon as one hole is punched, the tool is open and ready for the next punch. 

The punch head’s die pulls through the engineered wood truss or joist beam with power created from the double set of roller bearings in the ramped cam bearing slots on either side of the punch head plates. The roller bearings are machined into the double top T-1 3/16” plates of the punch head at an angle engineered to maximize the force.

A positive force advantage occurs when the distance from the center line of the die to the center pivot becomes equal to or less than the distance from the roller bearings to the pivot pin as the punch head operates. This is the first lever advantage (the distance from the die to the pivot bearing is less than the distance from the pivot to the actuator bearing in the end-of-cut position). The angle of the slot in the ramped cam for the roller bearings creates an additional negative force advantage. The distance, or lever advantage, between the pivot pin (the pivot point) to the bearings in the open position of the tool compared to the distance between the pivot and the die holder and the angle of the slot creates this negative force advantage. The incline advantage occurs as the bearings are forced down into the decreasing angle of the slot as the tool’s punch head closes. In other words, the ramped cam angle of the roller bearings decreases as the distance from the pivot pin to the roller bearing increases when the punch head operates.

SHOP TOOLS

Tool Operation

Smitty’s K.O. Punch is simple to operate. The cart easily rolls to make moving around the job site a breeze and there’s enough hose length to move around an entire room without restriction.

Are you convinced you need a Smitty’s K.O. Punch?

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Smitty's Wire Nut Crank wiring electrical box

Smitty’s Wire Nut Crank

Another Smitty’s Creation

Smitty’s Wire Nut Crank is a useful tool that should be in every electrician’s, or do-it-yourselfer’s, tool box. You’re guaranteed to create a secure connection with a wire nut every time because your wires twist together farther down unstripped wire. With a Smitty’s Wire Nut Crank, you can be confident there’s a safe and strong circuit when wiring any electrical box.  The tool’s simple design allows you to rotate the handle around the wire nut quickly and works with all sizes of wire nuts. It’s small, lightweight design allows you to keep it in your tool pouch for quick access. Whether you call them wire connectors, cone connectors, thimble connectors or wire nuts, Smitty’s Wire Nut Crank will make every wiring job easier.

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Contact Smitty’s

Smitty’s Tool Company can reached by phone or message. Our standard hours of operation are Monday – Friday, 8 AM – 5 PM PST. When we’re not taking care of our Smitty’s customers, we are running our electrical contracting company, Vision Electric, Inc. We’re happy to answer any questions or inquiries you may have about our products. If we are not available, please leave us a detailed message and we will return your call promptly.

Smitty’s Tool Company