commit ef6f90df6395d7083ea9d52dcbbadf5f54b690f1
Author: Stephen Carpenter <sjc@carpanet.net>
Date:   Tue Nov 22 12:48:32 2022 -0500

    Initial import of inserts.scad
    
    Also gave it a simple README.txt

diff --git a/README.txt b/README.txt
new file mode 100644
index 0000000..411b928
--- /dev/null
+++ b/README.txt
@@ -0,0 +1,3 @@
+Inserts Library
+
+A simple library for inserts and aligned bolt voids.
diff --git a/inserts.scad b/inserts.scad
new file mode 100644
index 0000000..f5dd80d
--- /dev/null
+++ b/inserts.scad
@@ -0,0 +1,88 @@
+
+
+function is_die() = (!is_undef($die) && $die);
+function in_color() = (!is_undef($co) && $co);
+
+module thread_insertM3(bl=4, bz=-4, invertRim=false) {
+	fd=5.5;
+	fh=.45;
+	rd=5.75;
+	rh=.8;
+	td= is_die() ? 4.8 : 5.15;
+	th=(fh+2*(rh+.5));
+	ic = in_color() ? "gold" : undef;
+	
+	// Bolt
+	bd = is_die() ? 3.5 : 2.9;
+	bhd = is_die() ? 6.5 : 5.7;
+	bhh = is_die() ? 3.5 : 3;
+	bc = in_color() ? "silver" : undef;
+	
+	color(bc) {
+		translate([0,0,bl+bz]) cylinder(d=bhd, h=bhh); // bolt head
+		translate([0,0,bz-.01]) cylinder(d=bd, h=bl+.02); // bolt
+	}
+	
+	color(ic) difference() {
+		union() {
+			if (! is_die() ) {
+				// Grip Rings
+				translate([0,0,invertRim ? -(rh+th+.05) : -fh])
+					cylinder(d=fd,h=fh+.01);
+				translate([0,0,-(fh+rh+.5)]) cylinder(d=rd,h=rh);
+				translate([0,0, invertRim ? -(th) : -th]) cylinder(d=rd,h=rh);
+			} else {
+				// top bezel for die
+				translate([0,0,invertRim ? -(rh+th+.05) : -fh]) 
+					cylinder(d=5.6, h=fh);
+			}
+			
+			translate([0,0,-(3.9)]) cylinder(d=td,h=3.91);
+		}
+		if (! is_die()) // xxx: threaded hole stand in
+			translate([0,0,-3.95]) cylinder(d=2.9,h=4);
+	}
+}
+
+module thread_insertM25(bl=4, bz=-4, invertRim=false) {
+	fd=4.44;
+	fh=.45;
+	rd=4.4;
+	rh=.8;
+	td= is_die() ? 3.8 : 4.1;
+	th=(fh+2*(rh+.5));
+	ic = in_color() ? "gold" : undef;
+	
+	// Bolt
+	bd = is_die() ? 2.75 : 2.5;
+	bhd = 1.5 * bd;
+	bhh = is_die() ? 3 : 2.5;
+	bc = in_color() ? "silver" : undef;
+	
+	color(bc) {
+		translate([0,0,bl+bz]) cylinder(d=bhd, h=bhh); // bolt head
+		translate([0,0,bz-.01]) cylinder(d=bd, h=bl+.02); // bolt
+	}
+	
+	color(ic) difference() {
+		union() {
+			if (! is_die() ) {
+				// Grip Rings
+				translate([0,0,invertRim ? -(rh+th+.05) : -fh])
+					cylinder(d=fd,h=fh+.01);
+				translate([0,0,-(fh+rh+.5)]) cylinder(d=rd,h=rh);
+				translate([0,0, invertRim ? -(th) : -th]) cylinder(d=rd,h=rh);
+			} else {
+				// top bezel for die
+				translate([0,0,invertRim ? -(rh+th+.05) : -fh]) 
+					cylinder(d=fd+.1, h=fh);
+			}
+			
+			translate([0,0,-5.56]) cylinder(d=td,h=5.56);
+		}
+		if (! is_die()) // xxx: threaded hole stand in
+			translate([0,0,-3.95]) cylinder(d=bd+.1,h=4);
+	}
+}
+
+thread_insertM25(bl=10, $die=true, $co=false, $fs=1);