attachment cover with similar chamfer to the attachment itsself.

Author: gluap

src/MainCase/UsbCover.scad

@@ -2,7 +2,6 @@ include <../../variables.scad>
 include <../../lib/utils.scad>
 
 $fn = 64;
-epsilon = 0.01; // infinitesimal thickness for slabs in hull - can be increased to see if offsets were done right.
 depth = UsbCover_depth+UsbCover_foot_length;
 
 

src/Mounting/AttachmentCover.scad

@@ -1,33 +1,40 @@
 include <../../variables.scad>
-
 use <../../lib/Round-Anything/polyround.scad>
 use <../../lib/utils.scad>
 
 module AttachmentCover(height=2) {
-  difference() {
-    intersection() {
-      hull() {
-        r0 = 2;
-        r1 = 1;
-
-        translate([0, 0, -1])
-        linear_extrude(1)
-        polygon(roundedRectangle(MountAttachment_width, MountAttachment_height, r0));
+  difference(){
+    hull(){
+      translate([0,0,0]) linear_extrude(epsilon) polygon(polyRound([
+          [0, MountAttachment_height/2, 2],
+          [MountAttachment_width, MountAttachment_height/2, 5],
+          [MountAttachment_width, -MountAttachment_height/2, 5],
+          [0, -MountAttachment_height/2, 2],
+        ], fn=$pfn));
 
-        translate([0, 0, height-1])
-        linear_extrude(1)
-        polygon(roundedRectangle(MountAttachment_width-2*(r0-r1), MountAttachment_height-2*(r0-r1), r1));
+      translate([-1,0,2-epsilon]) linear_extrude(epsilon) offset(r=-1) polygon(polyRound([
+          [0, MountAttachment_height/2, 2],
+          [MountAttachment_width, MountAttachment_height/2, 5],
+          [MountAttachment_width, -MountAttachment_height/2, 5],
+          [0, -MountAttachment_height/2, 2],
+        ], fn=$pfn));
+    }
+    mirror([0, 0, 0]) {
+      for(i = [-1, 1]) {
+        for(j = [-1, 1]) {
+          translate([
+            MountAttachment_width / 2 + i * MountAttachment_holes_dx / 2 + MountAttachment_holes_x_offset ,
+            j * MountAttachment_holes_dy / 2,
+            2,
+          ])
+          ScrewHole( 2,
+                    m3_screw_diameter_loose,
+                    head_depth=1,
+                    head_diameter=m3_screw_head_diameter);
+        }
       }
-
-      translate([-100, -100, 0])
-      cube(200);
     }
-
-    // Screw holes
-    for(i=[-1,1])for(j=[-1,1])
-    translate([i*MountAttachment_holes_dx/2, j*MountAttachment_holes_dy/2, height])
-    ScrewHoleM3(height, head_depth=height/2);
   }
 }
 
-AttachmentCover();
+translate([-MountAttachment_width/4-6,0,0])AttachmentCover();

variables.scad

@@ -35,6 +35,7 @@ $fs = 0.2;
 $fa = 1;
 $fn = fast ? 24 : 120;
 $pfn = $fn; // for polyRound
+epsilon = 0.01; // infinitesimal thickness for slabs in hull - can be increased to see if offsets were done right.
 
 
 // ==========================================================