Kolb-List Digest Archive

Sat 01/17/15


Total Messages Posted: 2



Today's Message Index:
----------------------
 
     1. 07:42 AM - Re: Form blocks (Richard Girard)
     2. 04:36 PM - Re: Form blocks (Richard Pike)
 
 
 


Message 1


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    Time: 07:42:07 AM PST US
    Subject: Re: 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


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    Time: 04:36:03 PM PST US
    Subject: 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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