From 4ba7cb970eea191e598cd4672aef536d83549e4d Mon Sep 17 00:00:00 2001
From: Steve Cross <flip@foxhollow.cc>
Date: Tue, 28 Dec 2021 10:38:12 -0500
Subject: [PATCH] Add missing overhang to slide plate for better clamping
 ability

---
 Vixen Dovetail/vixen_dovetail_plate.scad | 26 ++++++++++++++++--------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/Vixen Dovetail/vixen_dovetail_plate.scad b/Vixen Dovetail/vixen_dovetail_plate.scad
index 8eeffbf..03e98bc 100644
--- a/Vixen Dovetail/vixen_dovetail_plate.scad	
+++ b/Vixen Dovetail/vixen_dovetail_plate.scad	
@@ -83,6 +83,8 @@ $fn = 360;
 
 show_dovetail = false;
 rotate_final = true;
+include_base = false;
+include_slide_plate = true;
 
 clamp_angular_width = calculate_vixen_angular_offset(clamp_height, channel_angle);
 
@@ -103,12 +105,17 @@ if (rotate_final == false) {
     color("red") build_slide_plate();
     color("green") show_dovetail_bar();
 } else {
-    rotate([90, 0, 0])
-        color("LightSkyBlue") build_base_plate();
+
+    if (include_base == true) {
+        rotate([90, 0, 0])
+            color("LightSkyBlue") build_base_plate();
+    }
     
-    translate([0, -30, base_width])
-    rotate([90, 90, 0])
-        color("red") build_slide_plate();
+    if (include_slide_plate == true) {
+        translate([0, -30, base_width+clamp_travel_overlap])
+        rotate([90, 90, 0])
+            color("red") build_slide_plate();
+    }
 }
 
 module show_dovetail_bar() {
@@ -124,8 +131,9 @@ module build_slide_plate() {
     difference() {
         union() {
             difference() {
+                // main plate
                 translate([slide_plate_offset_x, 0, base_thickness+kerf_margin])
-                    cube([slide_plate_width, base_length, slide_plate_height]);
+                    cube([slide_plate_width+clamp_travel_overlap, base_length, slide_plate_height]);
 
                 translate([clamp_thickness, -1, base_thickness])
                     make_base_vixen_dovetail_bar(base_length+2);
@@ -135,7 +143,7 @@ module build_slide_plate() {
 
 
             slide_plate_guide_offset_x = slide_brace_offset_x + clamp_thickness + clamp_travel_overlap;
-            slide_plate_guide_length = base_width - slide_plate_guide_offset_x;
+            slide_plate_guide_length = base_width - slide_plate_guide_offset_x + clamp_travel_overlap;
 
             slide_plate_guide_radius = get_radius_from_apothem(slide_slot_depth-kerf_margin);
 
@@ -149,12 +157,12 @@ module build_slide_plate() {
         // bottom slide bolt hole
         translate([slide_plate_offset_x-1, slide_slot_offset_y1, base_thickness])
         rotate([90, 0, 90])
-            cylinder(slide_plate_width+2, d=slide_bolt_shaft_diameter);
+            cylinder(slide_plate_width+2+clamp_travel_overlap, d=slide_bolt_shaft_diameter);
 
         // bottom slide bolt hole
         translate([slide_plate_offset_x-1, slide_slot_offset_y2, base_thickness])
         rotate([90, 0, 90])
-            cylinder(slide_plate_width+2, d=slide_bolt_shaft_diameter);
+            cylinder(slide_plate_width+2+clamp_travel_overlap, d=slide_bolt_shaft_diameter);
     }
 }