Darryl Keil Last Activity 2025-09-09 11:09 AM
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David Thiessen

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Joined: 2014-03-16
Location: Bolivar, Mo USA

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Subject : honeycomb MDF sandwich strength.
Posted : 2014-07-02 10:22 AM
Post #37147
In constructing a honeycomb core which is strongest. 1/4 MDF, 1/2 honeycomb, 1/4 MDF, 1/2 honeycomb, 1/4 MDF or use 3/8 MDF skins in place of the 1/4 inch with a 1/4 center?


 
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Don Stephan

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

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Subject : RE: honeycomb MDF sandwich strength.
Posted : 2014-07-06 5:09 PM
Post #37148 - In reply to #37147
David:

If I follow your question correctly, the three middle layers would be the same, the only difference in the two options is that the first has 1/4" MDF skins and the second has 3/8" MDF skins? And you would have the same "frame" for the honeycomb layers in both options? And finally, when you say "strongest" are you interested in stiffness, resistance to point load breakage, or something else? Sorry for all the questions.

Don Stephan


 
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David Thiessen

Posts: 4

Joined: 2014-03-16
Location: Bolivar, Mo USA

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Subject : RE: honeycomb MDF sandwich strength.
Posted : 2014-07-06 5:24 PM
Post #37149 - In reply to #37148
Yes Don, you have it right. I am wondering about stiffness between the two options. I guess what I am really wondering is if the the thickness of the outer skins make much of a difference on the stiffness of the torsion box.
Thanks


 
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Don Stephan

Posts: 825

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

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Subject : RE: honeycomb MDF sandwich strength.
Posted : 2014-07-07 7:11 PM
Post #37150 - In reply to #37149
This type of question has arisen before without in depth answers. I suspect that most of us can't afford making large torsion boxes just to compare stiffness. the manufacturer almost certainly could answer the question but I expect it prefers to deal with end users purchasing units of honeycomb. Most likely you'll simply have to make one to see if it is satisfactory.
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