Oyster Cloister

We are spending this weekend in Tomales Bay.

On the way back the cottage we picked up some local oysters.  I wasn't quite sure how to open them, but luckily we found this oyster knife in the kitchen drawers.  After watching a video online I got the just of it and was popping open oysters left and right.  Here is our oyster shuck video...

The instrument of our desire...

You just have to admire the beauty of simplicity in this design.

 After dinner I thought I'd make a quick model of this knife and this is the result...

another view...

Here is the OpenScad code for this model.

        

// oyster_knife.scad
// openscad model 

$fs=0.2;

//top level
intersection() {
 blade();
 sharpen();
}
handle();
guard();


module blade() {
 hull() {
  translate([70,0,0]) cylinder(r=6/2,h=1, center=true);
  cylinder(r=10/2,h=1, center=true);
 }
}

module sharpen() {
 hull() {
  translate([68,0,0]) cylinder(r=5,h=0.1,center=true);
  translate([-70,0,0])cylinder(r=100/2,h=20, center=true);
 }
}

module handle() {
 rotate([0,-90,0])cylinder(r=12/2,h=10, center=false);
 translate([-10,0,0])union() {
  rotate([0,-90,0]) cylinder(r1=12/2,r2=30/2-0.1,h=50);
  translate([-50,0,0]) intersection() {
   sphere(r=30/2);
   cube([27,40,40],center=true);
  }
 }
}

module guard() {
 rotate([90,0,0])rotate([0,90,0]) hull() {
     translate([15,0,0]) cylinder(r=15/2,h=1, center=true);
  translate([-15,0,0]) cylinder(r=15/2,h=1, center=true);
   cylinder(r=30/2,h=1, center=true);
 }
}