# surface speed calculator
# copyright Chris Radek, chris@timeguy.com, 2007
# released under the terms of the GNU General Public License v.2

set terminal postscript landscape enhanced blacktext solid linewidth 3 "times bold" 10
set title "Surface speed calculator"

set logscale
set xrange [0.06:5.0]
set x2range [0.06:5.0]
set yrange [50:6000]

set xtics (.0625,.125,.1875,.25,.375,.5,.625,.75,1,1.25,1.5,2,3,4,5)
set x2tics ("1/16" .0625,"1/8" .125,"3/16" .1875,"1/4" .25,"3/8" .375,"1/2" .5,"5/8" .625,"3/4" .75,1,"1-1/4" 1.25,"1-1/2" 1.5,2,3,4,5)
set xlabel "Diameter"
set ytics (50,60,70,80,90,100,120,140,160,180,200,250,300,400,500,600,700,800,900,1000,1200,1500,2000,2500,3000,4000,5000,6000) 
set ylabel "RPM"
set grid xtics ytics

set label "50 SFM" at 0.0625*1.05,3150 rotate by -32
set label "100 SFM" at 0.125*1.05,3150 rotate by -32
set label "200 SFM" at 0.25*1.05,3150 rotate by -32
set label "300 SFM" at 0.375*1.05,3150 rotate by -32
set label "400 SFM" at 0.5*1.05,3150 rotate by -32
set label "500 SFM" at 0.625*1.05,3150 rotate by -32

set label "http://timeguy.com" at .065,55
unset key

plot 50 * 3.82/x, 100 * 3.82/x, 200 * 3.82/x, 300 * 3.82/x, 400 * 3.82/x, 500 * 3.82/x