From 6c33710934d12d2acd7444018f29f458c6b37c06 Mon Sep 17 00:00:00 2001
From: saji <saji@saji.dev>
Date: Sun, 1 Sep 2024 09:57:05 -0500
Subject: [PATCH] adjustments, add stubby nutbar

---
 mechanical/nutbar.scad        | 12 +++----
 mechanical/nutbar_stubby.scad | 60 +++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 6 deletions(-)
 create mode 100644 mechanical/nutbar_stubby.scad

diff --git a/mechanical/nutbar.scad b/mechanical/nutbar.scad
index 5961ede..cce078c 100644
--- a/mechanical/nutbar.scad
+++ b/mechanical/nutbar.scad
@@ -1,11 +1,11 @@
 // all units are in inches
-bar_dims = [1.228, 0.228, 0.184];
-bump_thickness = 0.01;
+bar_dims = [1.228, 0.228, 0.2];
+bump_thickness = 0.009;
 $fn = $preview ? 32 : 64;
 // hole/peg dimensions
-peg_od = 0.1315;
+peg_od = 0.125;
 hole_id = 0.107;
-peg_id = 0.091; // 0.005 larger than #2-56 nominal diameter
+peg_id = 0.100; // 0.005 larger than #2-56 nominal diameter
 peg_height = 0.405 - bar_dims[2];
 peg_fullheight = 0.245 - bar_dims[2]; // height of the full circle wrap around.
 function mm_to_in(mm) = 0.03937 * mm;
@@ -14,11 +14,11 @@ insert_diameter = mm_to_in(3.2); // 3.2mm (d3 for #2-56 inserts)
 insert_length = mm_to_in(5.0);
 
 notch_height = 0.108; // height from top of bar to bottom of notch
-notch_thickness = 0.0380 - 0.0190; // how far the notch goes from the outer edge.
+notch_thickness = 0.0380 - 0.022; // how far the notch goes from the outer edge.
 
 module peg_notch() {
     // The peg notch is the notch that is used to hold the nut bar to the board.
-    base_thick = 0.01;
+    base_thick = 0.008;
     rotate([180, -90,0])
     linear_extrude(0.054, center = true) polygon([
         [0,0],
diff --git a/mechanical/nutbar_stubby.scad b/mechanical/nutbar_stubby.scad
new file mode 100644
index 0000000..419878c
--- /dev/null
+++ b/mechanical/nutbar_stubby.scad
@@ -0,0 +1,60 @@
+// all units are in inches
+function mm_to_in(mm) = 0.03937 * mm;
+bar_dims = [1.228, 0.228, 0.22];
+bar_gap = 0.793;
+bump_thickness = 0.009;
+$fn = $preview ? 32 : 64;
+// hole/peg dimensions
+peg_od = 0.130; // snug fit against the footprint.
+hole_id = 0.107;
+peg_id = 0.100; // 0.005 larger than #2-56 nominal diameter
+peg_height = mm_to_in(1.6);
+peg_fullheight = 0.245 - bar_dims[2]; // height of the full circle wrap around.
+
+
+insert_diameter = mm_to_in(3.5); // 3.2mm (d3 for #2-56 inserts)
+insert_length = mm_to_in(6.1);
+
+notch_height = 0.108; // height from top of bar to bottom of notch
+notch_thickness = 0.0380 - 0.022; // how far the notch goes from the outer edge.
+
+module nutbar_peg() {
+    difference() {
+        union() {
+            // cube
+            translate([0,0, bump_thickness/2])
+            cube([bar_dims[1], bar_dims[1], bar_dims[2] + bump_thickness], center = true);
+            // peg portion
+            translate([0,0,bump_thickness + bar_dims[2]/2])
+
+            difference() {
+                cylinder(h = peg_height, d = peg_od);
+                union() {
+                    translate([0,0,-0.01])
+                    cylinder(h = peg_height+0.02, d = peg_id);
+                    translate([0,0,peg_fullheight])
+                    cube([1,1,1]);
+                };
+            };
+            
+            // 
+        };
+        union() {
+            // threaded insert hole
+            translate([0,0,-1 * bar_dims[2]])
+            cylinder(h = insert_length + 0.01, d = insert_diameter);
+            cylinder(h = bar_dims[2] + 1, d = peg_id, center = true);
+        };
+    };
+}
+
+// create the cross bar bit
+cube([bar_gap, bar_dims[1], bar_dims[2]], center=true);
+
+translate([bar_gap/2 + bar_dims[1]/2, 0, 0])
+rotate([0,0,90])
+nutbar_peg();
+
+translate([-1 * (bar_gap/2 + bar_dims[1]/2), 0, 0])
+rotate([0,0,-90])
+nutbar_peg();
\ No newline at end of file