racket_button

// this was mostly made from a racket.svg I found on the mailing list,
// by the  inkscape openscad exporter. i added a little bit of geometry
// at the bottom to make it round-ish.

// fudge value is used to ensure that subtracted solids are a tad taller
// in the z dimension than the polygon being subtracted from.  This helps
// keep the resulting .stl file manifold.
fudge = 0.1;

module poly_Lambda(h)
{
  scale([25.4/90, -25.4/90, 1]) union()
  {
    linear_extrude(height=h)
      polygon([[185.681500,191.992000],[182.122663,181.544974],[178.037506,170.429916],[173.458061,158.676670],[168.416359,146.315078],[162.944433,133.374985],[157.074314,119.886232],[144.267625,91.382125],[130.252545,61.041502],[115.285328,29.103109],[83.519500,-38.612000],[73.455723,-60.570142],[64.336643,-81.057635],[56.082198,-100.101580],[48.612328,-117.729078],[35.706068,-148.843139],[24.977375,-174.616625],[20.229463,-185.568406],[15.785760,-195.266346],[11.566204,-203.737547],[7.490734,-211.009109],[5.482013,-214.203496],[3.479290,-217.108135],[1.472559,-219.726415],[-0.548189,-222.061725],[-2.592962,-224.117450],[-4.671766,-225.896979],[-6.794609,-227.403700],[-8.971500,-228.641000],[-13.030770,-230.599209],[-17.341219,-232.504109],[-21.906434,-234.303986],[-26.730000,-235.947125],[-31.815504,-237.381811],[-37.166531,-238.556328],[-42.786668,-239.418963],[-48.679500,-239.918000],[-59.459898,-238.212084],[-70.089875,-236.073547],[-80.560102,-233.511705],[-90.861250,-230.535875],[-100.983992,-227.155373],[-110.919000,-223.379516],[-120.656945,-219.217619],[-130.188500,-214.679000],[-120.640418,-216.647486],[-111.612906,-218.860391],[-103.156191,-221.058506],[-95.320500,-222.982625],[-88.156059,-224.373541],[-84.841252,-224.788046],[-81.713094,-224.972047],[-78.777861,-224.893144],[-76.041832,-224.518936],[-73.511286,-223.817021],[-71.192500,-222.755000],[-68.838153,-221.260000],[-66.507366,-219.467099],[-64.203987,-217.393694],[-61.931865,-215.057182],[-59.694849,-212.474960],[-57.496787,-209.664427],[-53.232922,-203.428016],[-49.171058,-196.487125],[-45.341986,-188.980936],[-41.776495,-181.048626],[-38.505375,-172.829375],[-35.559415,-164.462363],[-32.969404,-156.086768],[-30.766133,-147.841769],[-28.980391,-139.866547],[-27.642967,-132.300280],[-26.784650,-125.282146],[-26.436232,-118.951327],[-26.628500,-113.447000],[-27.647732,-104.891484],[-29.082236,-96.411401],[-30.915977,-87.987664],[-33.132920,-79.601189],[-35.717028,-71.232891],[-38.652265,-62.863684],[-41.922596,-54.474483],[-45.511984,-46.046203],[-49.404395,-37.559758],[-53.583792,-28.996064],[-58.034139,-20.336034],[-62.739400,-11.560584],[-72.850524,6.412918],[-83.788875,25.077125],[-107.634115,65.088381],[-120.284431,86.740794],[-133.248828,109.694641],[-139.808718,121.707314],[-146.399020,134.102602],[-153.003700,146.899590],[-159.606721,160.117361],[-166.192047,173.775003],[-172.743643,187.891600],[-179.245472,202.486237],[-185.681500,217.578000],[-178.492750,223.656125],[-171.086500,229.477000],[-133.414500,223.726000],[-128.714395,211.456893],[-116.158719,179.100453],[-98.064434,133.333006],[-87.664363,107.506506],[-76.748500,80.830875],[-65.606465,54.140655],[-54.527879,28.270385],[-43.802361,4.054606],[-33.719531,-17.672141],[-29.009631,-27.341333],[-24.569010,-36.075315],[-20.433872,-43.769769],[-16.640418,-50.320377],[-13.224851,-55.622822],[-10.223375,-59.572785],[-8.889233,-61.007988],[-7.672190,-62.065951],[-6.576770,-62.733635],[-5.607500,-62.998000],[-4.341288,-62.868380],[-2.988413,-62.330456],[-1.552128,-61.397159],[-0.035685,-60.081422],[1.557662,-58.396178],[3.224663,-56.354361],[6.766611,-51.252734],[10.564141,-44.880004],[14.591231,-37.339633],[18.821863,-28.735082],[23.230016,-19.169812],[27.789670,-8.747288],[32.474806,2.429031],[42.117443,26.629203],[51.949769,52.603008],[61.763625,79.522750],[71.350852,106.560734],[80.503291,132.889266],[96.671172,180.107188],[108.601998,214.554953],[112.458119,224.920789],[113.767787,228.027079],[114.630500,229.611000],[115.945582,231.061756],[117.530969,232.485547],[119.352371,233.872658],[121.375500,235.213375],[125.889781,237.716766],[130.799500,239.918000],[138.374816,234.771557],[145.758906,229.371953],[152.945230,223.725154],[159.927250,217.837125],[166.698426,211.713830],[173.252219,205.361234],[179.582090,198.785303],[185.681500,191.992000]]);
  }
}

scale([.51521,.51521,.51521])
difference() {
translate([-3.5,-5.5,0])
{
  cylinder(r=73.95, h=5, center=true, $fn=64);
  translate([0,0,5/2])
  scale([1,1,18/73.95])
  difference() {
  sphere(r=73.95, center=true, $fn=64);
    translate([0,0,-50])
      cube([200,200,100], center=true);
  }
}
translate([0,0,2.5])
  poly_Lambda(20);
}