I created a part out of bendy plywood and flattened it to cut the part out on a router. It was off when bent. I am assuming it is related to the K value.

I created a part out of bendy plywood and flattened it to cut the part out on a router. It was off when bent. I am assuming it is related to the K value.

Does anyone know a K value for 3/8" thick bendy plywood?

You.

Measure your bend and calculate correct K-factor.

Calculate K factor, bend allowance and Y factor for sheet metal bending | Gasparini Industries

[A]nyone know a K value for 3/8" thick bendy plywood?

Do the calculation for you process.

Matt Peneguy wrote:

There's also an explanation and calculation by Dennis Dohogne at Setting up K factor.

Plus what's shown at the "Correct" link is already available in SW help:

Kevin Chandler wrote:

Matt Peneguy wrote:

There's also an explanation and calculation by Dennis Dohogne at Setting up K factor.

Plus what's shown at the "Correct" link is already available in SW help:

I'm shaking my head right now...Do you really expect me to take that equation and the equation at

and solve for the K-factor? That's way too much effort, when I can just download Dennis' spreadsheet and blindly use it...That way if I run into trouble I have someone to blame...

Kidding aside, Dennis' post is a good real world example of how you'd use this information to get accurate bends on a consistent basis.

And thanks for pointing out the information is available in the help. Sometimes I overlook the help, and we should all be using it first.

Calculate K factor, bend allowance and Y factor for sheet metal bending | Gasparini Industries

Do the calculation for you process.