Updated GridfinityDrawerSpacer to guard against rendering when not re…

…quired. Added adjustable magnet hole radius to GridfinityBox

CHANGELOG.md

@@ -19,3 +19,4 @@
 - v.0.5.3 - Removed a potential namespace collision for computing the height of boxes
 - v.0.5.4 - Optimized the geometry of the baseplate top height
 - v.0.5.5 - Added underside bin clearance and variable wall thickness interior radiusing
+- v.0.5.6 - Added adjustable magnet hole diameter to box. Prevent drawer spacers being rendered which fall below minimum size

README.md

@@ -606,6 +606,8 @@ b1.save_step_file()
 - v.0.5.3 - Removed a potential namespace collision for computing the height of boxes
 - v.0.5.4 - Optimized the geometry of the baseplate top height
 - v.0.5.5 - Added underside bin clearance and variable wall thickness interior radiusing
+- v.0.5.6 - Added adjustable magnet hole diameter to box. Prevent drawer spacers being rendered which fall below minimum size
+
 
 # References
 

cqgridfinity/__init__.py

@@ -4,7 +4,7 @@
 
 # fmt: off
 __project__ = 'cqgridfinity'
-__version__ = '0.5.5'
+__version__ = '0.5.6'
 # fmt: on
 
 VERSION = __project__ + "-" + __version__

cqgridfinity/gf_box.py

@@ -454,7 +454,11 @@ def render_holes(self, obj):
         )
 
     def render_hole_fillers(self, obj):
-        rc = cq.Workplane("XY").rect(self.hole_diam / 2, self.hole_diam).extrude(GR_HOLE_SLICE)
+        rc = (
+            cq.Workplane("XY")
+            .rect(self.hole_diam / 2, self.hole_diam)
+            .extrude(GR_HOLE_SLICE)
+        )
         xo = self.hole_diam / 2
         rs = composite_from_pts(rc, [(-xo, 0, GR_HOLE_H), (xo, 0, GR_HOLE_H)])
         rs = composite_from_pts(rs, self.hole_centres)

cqgridfinity/gf_drawer.py

@@ -144,11 +144,28 @@ def wide_enough(self):
     def deep_enough(self):
         return self.length_th > self.min_margin
 
+    def check_dimensions(self):
+        """Check required size does not fall below specified minimum margin."""
+        if not self.wide_enough and not self.deep_enough:
+            print("Drawer spacers NOT required since resulting margins are:")
+            print(
+                "  %.2f mm +/-%.2f mm (tolerance) widthwise which is not above the %.2f margin threshold"
+                % (self.length_th, self.tolerance, self.min_margin)
+            )
+            print(
+                "  %.2f mm +/-%.2f mm (tolerance) depthwise which is not above the %.2f margin threshold"
+                % (self.width_th, self.tolerance, self.min_margin)
+            )
+            return False
+        return True
+
     def render(self, arrows_top=True, arrows_bottom=True):
         """Renders a corner spacer component. This component can be used for any of
         the four corners due to symmetry.  Optional arrows can be cut into the
         component on the top or bottom to show the drawer sliding/depth-wise direction
         """
+        if not self.check_dimensions():
+            return None
         sp_length = self.length + self.width_th + self.tolerance
         sp_width = self.width + self.length_th + self.tolerance
         r, rd = None, None
@@ -158,15 +175,17 @@ def render(self, arrows_top=True, arrows_bottom=True):
                 .rect(sp_length, self.length_th)
                 .extrude(self.thickness)
             )
+            er = min(GR_RAD, self.length_th / 4)
             r = r.translate((sp_length / 2, self.length_th / 2, 0))
-            r = r.edges("|Z").edges("<X").edges("<Y").fillet(GR_RAD)
+            r = r.edges("|Z").edges("<X").edges("<Y").fillet(er)
             r = r.edges("|Z").fillet(self.fillet_rad)
         if self.wide_enough:
             rd = (
                 cq.Workplane("XY").rect(self.width_th, sp_width).extrude(self.thickness)
             )
+            er = min(GR_RAD, self.width_th / 4)
             rd = rd.translate((self.width_th / 2, sp_width / 2, 0))
-            rd = rd.edges("|Z").edges("<X").edges("<Y").fillet(GR_RAD)
+            rd = rd.edges("|Z").edges("<X").edges("<Y").fillet(er)
             rd = rd.edges("|Z").fillet(self.fillet_rad)
 
         if r is not None and rd is not None:
@@ -299,6 +318,8 @@ def render_full_set(self, include_baseplate=False):
         respective installed position in the drawer so that the resulting object can
         be used to preview final composition of components."""
         # Four corners top/bottom left + top/bottom right
+        if not self.check_dimensions():
+            return None
         bl = self.render()
         tl = rotate_x(bl, 180).translate((0, self.size[1], self.thickness))
         br = rotate_y(bl, 180).translate((self.size[0], 0, self.thickness))
@@ -332,6 +353,8 @@ def render_half_set(self):
         for 3D printing.  This resulting compound object can then be printed twice to
         yield a complete set of spacer components for a drawer."""
         # one of each corner
+        if not self.check_dimensions():
+            return None
         bl = self.render(arrows_bottom=False)
         br = self.render(arrows_top=False)
         if self.deep_enough: