From c13691b16d682425a4010c0df0a538b32a1f84b6 Mon Sep 17 00:00:00 2001
From: Patrick Opheys <patrick.opheys@alumni.fh-aachen.de>
Date: Fri, 17 Apr 2026 21:04:07 +0200
Subject: [PATCH] V1

---
 WhiteboardMarkerHolder.scad | 47 +++++++++++++++++++++++++++++++++++++
 testholder.scad             |  8 +++++++
 2 files changed, 55 insertions(+)
 create mode 100644 WhiteboardMarkerHolder.scad
 create mode 100644 testholder.scad

diff --git a/WhiteboardMarkerHolder.scad b/WhiteboardMarkerHolder.scad
new file mode 100644
index 0000000..62c7a57
--- /dev/null
+++ b/WhiteboardMarkerHolder.scad
@@ -0,0 +1,47 @@
+$fn = 150;
+
+number_of_pens = 8;
+pen_radius = 8;
+pen_length = 115;
+side_height = 40;
+circle_spacing = 3;
+wall_offset_y = 13;
+wall_offset_x = 10;
+circle_offset_y = 0;
+height = (number_of_pens*pen_radius*2)+(number_of_pens+1)*circle_spacing;
+width = (2*pen_radius);
+width_circle_spacing = 1;
+d = wall_offset_y - 3;
+p = 5;
+k = height/2;
+h = (d^2 - (height/2 - p)^2)/(2*d);
+R = sqrt(pow(h,2)+pow((height/2)-p,2));
+echo(R);
+echo(h);
+difference(){
+    group(){
+        linear_extrude(height) group(){ 
+            difference() {
+                translate([-12,0]) square([12,10]);
+                rotate([0,0,-45]) translate([-16,-11]) square([20,10]);
+            } 
+            translate([0,4]) square([3,1]);
+            translate([0,10]) square([3,1]);
+            translate([3,10]) square([1,3]);
+            translate([3,2]) square([1,3]);
+            translate([-pen_length-wall_offset_x,10]) square([pen_length+wall_offset_x,3]); //inner wall
+            translate([-pen_length-wall_offset_x,0]) square([3,wall_offset_y+width+3+width_circle_spacing*2]); //bottom 
+            translate([-pen_length-wall_offset_x,wall_offset_y+width+width_circle_spacing*2]) square([pen_length+3,3]); //outer wall
+            translate([-wall_offset_x,12]) square([3,width+3+width_circle_spacing*2]);
+        };
+
+        translate([-pen_length+3-wall_offset_x,13,0]) cube([side_height,width+width_circle_spacing*2,3]);
+        translate([-pen_length+3-wall_offset_x,13,height-circle_spacing]) cube([side_height,width+width_circle_spacing*2,3]); 
+    }    
+
+    for(i = [1:1:number_of_pens]) {
+      position = pen_radius+circle_spacing+((i-1)*circle_spacing)+((i-1)*pen_radius*2);
+      translate([-5-wall_offset_x, +wall_offset_y+width_circle_spacing+circle_offset_y+pen_radius, position]) rotate([0,90,0]) cylinder(10, pen_radius, pen_radius);  
+    }
+    translate([-pen_length-wall_offset_x,h,height/2]) rotate([0,90,0]) cylinder(h = 10, r = R);
+}
diff --git a/testholder.scad b/testholder.scad
new file mode 100644
index 0000000..2e691fa
--- /dev/null
+++ b/testholder.scad
@@ -0,0 +1,8 @@
+linear_extrude(10) group(){    
+    translate([-9,0])square([10,19]);
+    translate([1,4]) square([3,1]);
+    translate([1,10]) square([3,1]);
+    translate([4,10]) square([1,3]);
+    translate([4,2]) square([1,3]);
+};
+