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Old 07-11-2019, 04:54 PM
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Gary Campbell Gary Campbell is offline
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Default WinCNC Tangential Knife Feature

Guys...
Many of us use a drag knife on occasion, but few know about one of the built in features of the WinCNC Controller, Tangential Knife Control.

Here is a 5 minute video showing my first cuts on a tangential knife that I built. It uses standard sized utility knife blades, but I am using the higher priced Lenox Carbide Blades. It looks like speeds can be increased and still retain quality, at least in the double ply corrugated and Coroplast that I had on hand for the test cuts.


https://youtu.be/X7SzwVDPtks
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Old 07-11-2019, 08:10 PM
rcrawford rcrawford is offline
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Cool.

Would that also work as the 'C' axis for an aggregate head?
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Old 07-11-2019, 08:34 PM
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Gary Campbell Gary Campbell is offline
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Russell...
In principle, yes, but I would want a more robust drive system as the loads are greater than they are on a center mounted knife blade.
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Old 07-13-2019, 11:17 AM
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Gary Campbell Gary Campbell is offline
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Another test to see how far the cut feeds could be pushed. With a level spoilboard and good material 450-500 ipm are attainable.

Enjoy: https://youtu.be/hSTUl5yy2AE
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"There are 10 kinds of people in the world. Those that understand binary logic, and those who don't"
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Old 07-14-2019, 09:09 AM
John B John B is offline
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Red face Blade Strop

All that needs is slot milled into the head with a couple of screws to hold the blade at the correct angle and a long strip of smooth belting leather glued to a board and you could write a little routine to drag it back and forth from one end to the other to re-sharpen your blades...you might even adapt it to your straight razor
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Old 07-14-2019, 08:31 PM
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Gary Campbell Gary Campbell is offline
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At a penny a piece, don't know if sharpening is required. And I am too old and shaky to use a straight razor!
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"There are 10 kinds of people in the world. Those that understand binary logic, and those who don't"
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Old 07-15-2019, 11:01 AM
John B John B is offline
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How many thousand carbide utility knife blades do you have to buy at once to get them for a penny a piece? ...and where?
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Old 07-15-2019, 12:40 PM
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My bad... a dime a piece.

https://www.amazon.com/WORKPRO-Utili...gateway&sr=8-4
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"There are 10 kinds of people in the world. Those that understand binary logic, and those who don't"
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Old 07-16-2019, 07:50 AM
neal_meyers_jr neal_meyers_jr is offline
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Cool

Watched the video yesterday and I am always impressed with what you come up with. Must be the cold winters give one time to think things up while trapped inside your home in the frozen tundra.....LOL

Great work.
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Old 07-16-2019, 10:42 AM
The real JP The real JP is offline
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That B at the end... Holds it up shows it to the camera, throws it down and walks away. Like the cnc mic drop:)
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Industrial electrician by day, Cabinet and furniture maker by evening and weekend. Cnc newb.

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