DVC PLANNERS PRECISION SHEET METAL LAYOUT MANUAL #1 (FREE ONLINE VERSION) INTRODUCTION If   you   have   been   working   in   a   sheet   metal   shop,   plan   to   work   in one,   or   just   want   to   sharpen   and   improve   your   skills   with   sheet   metal then this manual will help you to do that. The   goal   of   this   manual   is   to   help   you   gain   an   understanding   of precision    sheet    metal    layout    and    show    you    how    to    do    flat    pattern development   while   becoming   more   efficient   with   math   in   the   shop. Therefore   the   first   part   of   this   manual   deals   strictly   with   math   that   is related     to     sheet     metal     development.     Geometry,     Algebra     and Trigonometry   will   all   be   used.   Don’t   let   this   scare   you   because   once you have something to relate it to the math becomes easier. One   way   of   becoming   more   efficient   in   math   is   proper   use   of   the calculator.   The   calculator   is   not   always   used   to   its   fullest   capability   in the   shop   in   most   cases.   Normally   it   is   used   only   as   an   adding   machine.   I have   even   seen   people   with   calculators   that   are   capable   of   trig   functions go   and   look   up   trig   tables   in   a   book   to   complete   a   problem.   People   with calculators   also   go   to   fraction   charts   to   convert   to   decimals   when   it   is just   a   few   key   strokes   away   on   their   calculators.   The   calculator   should be used as a production tool speeding up shop calculations. This   manual   was   designed   to   be   used   with   a   scientific   calculator with   at   least   trigonometry   functions   on   it.   It   should   also   have   direct formula input (Follow mathematical hierarchy  rules. see page: 2 )
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I’ve     been     in     the     Metal     Fabrication     industry     since     1973, predominantly   in   Precision   Sheet   Metal   job   shops.   I’ve   done   my   share   of machining    also.    I    wrote    the    printed    version    of    this    manual    back    in 1991and   sold   many,   many   copies   of   it.   In   early   2012   I   decided   to   put   the free   version   online   and   I   have   been   slowly   adding   the   chapters.   Soon   I will be offering the printed version again once I reformat it.       If   you   want   an   email   sent   to   you   when   a   chapter   is   added   please visit   the   “contact”    page.   I   will   only   use   your   email   address   for   updates   to SheetMetalWorkbook.com   and   will   never   SPAM   nor   Sell   your   email, period! To    help    me    keep    this    project    going    please    Donate    or    Visit    my sponsored   ads.   I   am   selling   advertising   spaces    also.   This   website   gets   an average   of   6300   page   views   per   month   for   the   last   8   months   with   only   a 1%   bounce   rate.   We   have   a   very   narrow   targeted   audience   so   if   you   have a   product   related   to   precision   sheet   metal   fabrication   try   running   an   ad   on www.SheetMetalWorkbook.com.
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