From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 14 Jun 2025 15:52:24 +0000 (+0100)
Subject: toolbox-inserts: bits: for experimentation
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=HEAD

toolbox-inserts: bits: for experimentation

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/toolbox-inserts.scad b/toolbox-inserts.scad
index 5c7b748..c5dff05 100644
--- a/toolbox-inserts.scad
+++ b/toolbox-inserts.scad
@@ -69,7 +69,7 @@ $shaftextender_fixings_nx = 6;
 
 bit_pitch_x = 25.4 * 2 / 5;
 bit_pitch_y = 13.125;
-bit_n_x = 10;
+bit_n_x = 11;
 bit_n_y = 4;
 bit_mag_d = 6 + 0.5;
 bit_bit_d = 7.2 + 0.4;
@@ -643,7 +643,7 @@ module BitFixingsHolesPlan(){
 module BitAtFixings() {
   dist = fixing_pitch *
     (
-     floor(bit_pitch_x * (bit_n_x-1) / fixing_pitch)
+     ceil(bit_pitch_x * (bit_n_x-1) / fixing_pitch)
      + bit_holder_fixings_dn
      );
   for (x = [-1,+1] * dist/2) {
@@ -810,16 +810,22 @@ module MagnetHolderTest(){ ////toplevel
   }      
 }
 module BitHolderPlanDemo(){ ////toplevel
+  offset = concat(bit_holder_offset, [0]);
+  
   color("grey") BitMagnetHolderPlan();
   color("blue") translate([0,0,10]) BitBitsPlan();
   color("red") translate([0,0,20]) BitFixingsHolesPlan();
-  color("black") translate([0, fixing_pitch * -3.5, -10])
+  color("black") translate([0, fixing_pitch * -2, -10] + offset)
     AtPlateFixings()
     circle(r=fixing_nom_d/2);
   color("white")
     for (x= [-20: 20])
       for (y= [-10: 10])
-	translate(fixing_pitch * [x + 0.5, y + 0.5, 0] + [0,0, -15])
+	translate(
+		  fixing_pitch * [x + 0.5, y, 0]
+		  + [0,0, -15]
+		  + offset
+		  )
 	  circle(r=fixing_nom_d/2);
 }