holetest: Introduce spc

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

diff --git a/holetest.scad b/holetest.scad
index 18a6e09873e56207bad232fbafa1737b99fae8ff..e2f99f7570bd470a9890cfa1d9507cfbe411394b 100644 (file)
--- a/holetest.scad
+++ b/holetest.scad
@@ -5,6 +5,8 @@ h=2;
 $fa=1;
 $fs=0.1;
 
+spc= 7;
+
 difference(){
   cube([50,10,h], center=true);
   for (i=[0:2:10]) {
@@ -12,7 +14,7 @@ difference(){
     sz = 3 + 0.5 * i/10;
 
     echo(sz);
-    translate([(i-5)/2 * 7, 0, -7 ])
+    translate([(i-5)/2 * spc, 0, -spc ])
       cylinder(r= sz/2, h=14);
   }
 }