What is the minimum radius that 6 mm Medite Tricoya Extreme MDF (an MDF for outdoor use) can be bent to? If possible I want to bend it to a radius of 2500 mm, without kerfing.

It will be fixed with screws over the whole surface, so it doesn't matter if it wants to spring back. What I'm interested in is if it is likely to crack when I bend it.

I will use painted Medite Tricoya Extreme as the surface layer of a skateboard ramp. The manufacturer doesn't publish bendability data, and I haven't got hold of them to ask. The material is very expensive, so it would be great to hear if anyone has experience with this.

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    I think this is a case where you are going to have to create your own set of empirical evidence based on your material and methods. Set up some test pieces and give it a try. Not all "MDF" is created equal. In fact, different MDF is made differently precisely to offer various strength and stiffness. – jdv May 29 '20 at 12:34
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    Yes absolutely what @jdv said. We think of MDF as being a consistent material, and it is to a great extent within the one product, but across the class it varies hugely, with the better examples being notably less friable, heavier and generally stiffer (in addition to having greater resistance to water). So do a test — cut a narrow strip and see if it'll make the bend. If you have the spare material, cut one strip from the length, a second along the width. – Graphus May 30 '20 at 6:03
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    What's the application? Perhaps HDF (hardboard) would be a better choice here anyway. – Graphus May 30 '20 at 6:04
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    @PetaspeedBeaver BTW, always feel free to edit your question if you want. Comments are ephemeral, and intended for a way for us to ask for clarification. We abuse comments a bit more in WW that other SE sites, but that's the way it goes sometimes. – jdv Jun 1 '20 at 1:12
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    @FreeMan, yea, you're right. Sent several messages, but no answer for several weeks. I'll call them and post the info here if I get it. – PetaspeedBeaver Jun 11 '20 at 21:15

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