feat: gridfinity baseplate

models/gridfinity/base.scad

@@ -0,0 +1,98 @@
+// import BOSL2
+include <BOSL2/std.scad>
+
+/* [Hidden] */
+// constants which shouldn't be changed
+$fn=100;
+
+// This is the HomeRacker base unit. don't change this!
+BASE_UNIT=15; // mm
+// Standard tolerance for the mount. This is a sane default.
+TOLERANCE=0.2; // mm
+// Base strength. This is a sane default.
+BASE_STRENGTH=2; // mm
+// Chamfer size. This is a sane default.
+CHAMFER=2.5; // mm
+// Lock Pin side length
+LOCK_PIN_SIDE=3; // mm
+// lock pin edge distance
+LOCK_PIN_EDGE_DISTANCE=5.5; // mm
+// lock pin chamfer
+LOCK_PIN_CHAMFER=0.8; // mm
+
+GRIDFINITY_BASEPLATE_SIDE_LENGTH=42; // mm
+GRIDFINITY_BASEPLATE_STRENGTH=8; // mm
+GRIDFINITY_BASEPLATE_SIDE_LENGTH_INNER=GRIDFINITY_BASEPLATE_SIDE_LENGTH-GRIDFINITY_BASEPLATE_STRENGTH/2; // mm
+
+GRIDFINITY_INCLINE_1=0.7; // mm
+GRIDFINITY_INCLINE_2=1.8; // mm
+GRIDFINITY_INCLINE_3=2.15; // mm
+GRIDFINITY_BASEPLATE_HEIGHT=GRIDFINITY_INCLINE_1+GRIDFINITY_INCLINE_2+GRIDFINITY_INCLINE_3; // mm
+
+/* [Grdifinity] */
+x_units=1; // [1:1:10]
+y_units=1; // [1:1:10]
+
+module recess(side_length,chamfer){
+  //chamfer
+  rotate([180,0,0])
+  prismoid(
+    size1=[side_length,side_length], 
+    rounding=chamfer, 
+    h=chamfer,
+    xang=45,
+    yang=45
+    ); 
+}
+
+module gridfinity_unit(){
+  difference(){
+    //outer cube
+    cuboid(
+        size=[GRIDFINITY_BASEPLATE_SIDE_LENGTH,GRIDFINITY_BASEPLATE_SIDE_LENGTH,GRIDFINITY_BASEPLATE_HEIGHT],
+        anchor=CENTER+BOTTOM
+    );
+    //1st recess
+    
+    translate([0,0,GRIDFINITY_BASEPLATE_HEIGHT])
+    recess(
+      GRIDFINITY_BASEPLATE_SIDE_LENGTH,
+      GRIDFINITY_INCLINE_3);
+    //2nd recess
+    translate([0,0,GRIDFINITY_BASEPLATE_HEIGHT-GRIDFINITY_INCLINE_3-GRIDFINITY_INCLINE_2])
+    cuboid(
+      size=[
+        GRIDFINITY_BASEPLATE_SIDE_LENGTH-GRIDFINITY_INCLINE_3*2,
+        GRIDFINITY_BASEPLATE_SIDE_LENGTH-GRIDFINITY_INCLINE_3*2,
+        GRIDFINITY_INCLINE_2
+        ],
+      rounding=GRIDFINITY_INCLINE_2,
+      except=[BOTTOM,TOP],
+      anchor=CENTER+BOTTOM
+    );
+    // //3rd recess
+    translate([0,0,GRIDFINITY_INCLINE_1+0.01])
+    recess(
+      GRIDFINITY_BASEPLATE_SIDE_LENGTH_INNER,
+      GRIDFINITY_INCLINE_1+0.01
+    );
+  }
+}
+
+module grid(x,y){
+  intersection(){
+    grid_copies(spacing=[GRIDFINITY_BASEPLATE_SIDE_LENGTH,GRIDFINITY_BASEPLATE_SIDE_LENGTH],n=[x,y])
+    gridfinity_unit();
+    // roundings
+    cuboid(
+      size=[GRIDFINITY_BASEPLATE_SIDE_LENGTH*x,GRIDFINITY_BASEPLATE_SIDE_LENGTH*y,GRIDFINITY_BASEPLATE_HEIGHT*2],
+      anchor=CENTER+BOTTOM,
+      rounding=CHAMFER,
+      except=[BOTTOM,TOP]
+    );
+  }
+  
+}
+
+
+grid(x=2,y=3);