Darryl Keil Last Activity 2025-09-09 11:09 AM
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Link Van Cleave

Posts: 8

Joined: 2007-10-16

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Subject : How close for ribs in form....
Posted : 2007-10-16 5:34 PM
Post #34102
I usually use two layers of 3/8" bending ply when making forms but it would be easier for me on this project to use one layer. My ribs are 3 3/8" apart on a curved form. The actual spaces are 3 3/8". I will be pressing 7 layers of 1/8" bending ply to make a curved panel on this form. Think I can do this or will I get some woopty dos if I don't double up the 3/8" ply.
L.


 
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Don Stephan

Posts: 825

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

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Subject : RE: How close for ribs in form....
Posted : 2007-10-16 7:45 PM
Post #34103 - In reply to #34102
Can't give you a specific answer, but the topic is covered in detail in Darryl Keil's 2nd video available at www.vacupress.com.


 
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Darryl Keil

Posts: 1455

Joined: 2003-05-22
Location: Maine

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Subject : RE: How close for ribs in form....
Posted : 2007-10-16 8:41 PM
Post #34104 - In reply to #34102
Link,

My general rule is 6" on center with two layers of 3/8" bending ply on the form and 3" on center with one layer of 3/8" bending ply. You are a little farther apart than the 3" rule but probably OK. Do a test by putting your form in the bag with a straight edge on top and see if there is any defection.

Darryl Keil
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