WIP: Move `mech` directory to `case`

TODO: There are outdated references (see grep -R mech .)

The directory name should reflect what is inside, not the field of
engineering it belongs to.

1 files changed, 13 insertions, 0 deletions

diff --git a/case/pcb_case/bolt.scad b/case/pcb_case/bolt.scad
new file mode 100644
index 0000000..4c26c30
--- /dev/null
+++ b/case/pcb_case/bolt.scad
@@ -0,0 +1,13 @@
+// bolt based on ISO 4762 (https://www.fasteners.eu/us/standards/ISO/4762)
+bolt_k = 3;
+bolt_l = 10;
+bolt_dk = 5.5;
+bolt_ds = 3;
+bolt_ds_tol = 0.45;
+
+module bolt() {
+	union() {
+		cylinder(d=bolt_ds, h=bolt_l, $fn=30);
+		translate([0, 0, -bolt_ds]) cylinder(d=bolt_dk, h=bolt_ds, $fn=30);
+	}
+}