Finished drill press adapter.

etching/adapter_drilling_machine.scad

@@ -0,0 +1,48 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Adapter for drilling machine in the embedded lab.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   07.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+cone_radius_1 = 31.8 /2;
+cone_radius_2 = 48.1 /2;
+cone_height = 31;
+
+cylinder_radius = 43 /2;
+cylinder_height = 21.5;
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+
+difference()
+{
+difference()
+{
+	union()
+	{
+		// Draw the hole to hold the drilling machine
+		translate([0, 0, cylinder_height/2])
+		cylinder(h = cylinder_height, r = cylinder_radius, center = true);
+		translate([0, 0, 1.5 + cylinder_height])
+		cylinder(h = 3, r = 26, center = true);
+	}
+
+	translate([0, 0, cone_height/2 + 3])
+	union()
+	{
+		translate([0, 0, -20])
+		cylinder(h = 15, r = cone_radius_1, center = true);
+		// Draw cone measured
+		cylinder(h = cone_height, r1 = cone_radius_1, r2 = cone_radius_2, center = true);
+	
+	}
+}
+translate([cone_radius_2, 0, 0])
+cube([30, 15, 60], center = true);
+
+}

etching/open_box.scad

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+/////////////////////////////////////////////////////////////////////////////////
+// Module for a open box with rounded edges.
+//
+// Author: 		Maximilian Stiefel
+// Last modification: 	26.04.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+module open_box(width, length, height, thickness)
+{
+
+	/////////////////////////////////////////////////////////////////////////
+	// Vars
+	/////////////////////////////////////////////////////////////////////////
+	edge_rounding = 8;
+	compensation = 2*abs(edge_rounding-thickness);
+
+	/////////////////////////////////////////////////////////////////////////
+	// Action
+	/////////////////////////////////////////////////////////////////////////
+	translate([0, 0, 0]) difference(){		
+		// Hull 4 cylinders which are compensated against the thickness
+		// so the actual desired thickness/2 and edge rounding is always achieved.
+		hull(){
+			// x=0, y=0
+			translate([edge_rounding, edge_rounding, 0])
+				cylinder(r = edge_rounding, h = height + thickness);
+			// x=width, y=0
+			translate([width + edge_rounding - compensation, edge_rounding, 0])
+				cylinder(r = edge_rounding, h = height + thickness);
+			// x=0, y=length
+			translate([edge_rounding, length + edge_rounding - compensation,0])
+				cylinder(r = edge_rounding, h = height + thickness);
+			//x=width, y=length
+			translate([width + edge_rounding - compensation, length + edge_rounding - compensation,0])
+				cylinder(r = edge_rounding, h = height + thickness);
+		}
+
+		translate([thickness, thickness, thickness])
+			cube([width, length, height + 1]);
+	}
+}