Darryl Keil Last Activity 2025-09-09 11:09 AM
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Don Stephan

Posts: 825

Joined: 2003-07-18
Location: Cincinnati, Ohio

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Subject : Flexibility: 1/8 BB vs Ital Bend Poplar
Posted : 2010-02-22 8:06 PM
Post #35940
Anyone have any experience comparing the flexibility of 1/8" baltic birch and italian bending poplar plywoods? The application would be a chair seat which remains flat across its width but has a gentle front downward lip, and at the rear curves to vertical at perhaps a 4.5" radius.
Thanks.


 
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Darryl Keil

Posts: 1455

Joined: 2003-05-22
Location: Maine

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Subject : RE: Flexibility: 1/8 BB vs Ital Bend Poplar
Posted : 2010-02-22 8:32 PM
Post #35941 - In reply to #35940
Don,

1/8" baltic birch is pretty stiff, especially compared to italian bending poplar. With a 4.5" radius I think you will need to use the bending poplar.

Do you have both that you can do tests with?

Darryl Keil


 
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Brad

Posts: 87

Joined: 2008-04-22

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Subject : RE: Flexibility: 1/8 BB vs Ital Bend Poplar
Posted : 2010-02-23 5:01 PM
Post #35942 - In reply to #35940
Don, I used three layers of 1/8" BB for a curved table base and I was surprised how much effort it took to bend it over the form. The rad for mine was around 24" so the press did pull it in smoothly, but I think that last 4.5" rad in your project could be a problem.

Brad
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