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                           Kolb-List Digest Archive
                                      ---
                     Total Messages Posted Sat 01/17/15: 2
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Today's Message Index:
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     1. 07:42 AM - Re: Form blocks  (Richard Girard)
     2. 04:36 PM - Re: Form blocks  (Richard Pike)
 
 
 
________________________________  Message 1  _____________________________________


Time: 07:42:07 AM PST US
Subject: Re: Kolb-List: Form blocks
From: Richard Girard <aslsa.rng@gmail.com>

Frank, For the life of me I cannot find the little book on calculating
spring back that I was given when I worked in the Cessna tooling machine
shop years ago. My gut says that you need 4 degrees of compensation, but
without my spring back and bend allowance book. I did find this:

http://www.custompartnet.com/calculator/bending-springback

Using their calculator it comes out to 2.3 degrees

Rick Girard
do not archive

On Wed, Jan 14, 2015 at 8:52 AM, Frank <frank.goodnight@att.net> wrote:

>
> Making some form blocks and
> have forgotten what angle to cut
> the edges so the flanges will spring
> back and end up at 90 degrees. Using
> .025-- 6061T6. Would someone with
> A better (younger) memory please
> enlighten me. Thanks
> Frank
>
>
> Sent from my iPhone
>
>


-- 


Believe those who are seeking the truth, doubt those who find it.
-Andre Gide

________________________________  Message 2  _____________________________________


Time: 04:36:03 PM PST US
Subject: Kolb-List: Re: Form blocks
From: "Richard Pike" <thegreybaron@charter.net>


>From Tony Bingelis' book "Sportplane Construction Techniques."

--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
My soul shall be joyful in the LORD; It shall rejoice in His salvation. Psalm 35:9


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=437163#437163


Attachments: 

http://forums.matronics.com//files/sct_987.jpg


 

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