brompton-computer-guard: move a parameter out of calculated

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

diff --git a/brompton-computer-guard.scad b/brompton-computer-guard.scad
index 0067bbc0377461f00d5253b4ff32ae7eb7c82bf1..1c4789c67f0256fc3235d8c8b7a0a131cf383121 100644 (file)
--- a/brompton-computer-guard.scad
+++ b/brompton-computer-guard.scad
@@ -13,6 +13,7 @@ hole_dia = 4 + 0.5;
 pbase_tab = 12;
 pbase_thick = 4;
 inner_pbase_thick = 8;
+inner_pbase_rad_mul = 2;
 
 // computed
 
@@ -24,7 +25,7 @@ arch_to_chord = arch_in_rad * cos(arch_beta);
 
 echo(inner_pbase_thick);
 
-inner_pbase_rad = arch_in_rad * 2;
+inner_pbase_rad = arch_in_rad * inner_pbase_rad_mul;
 
 end_thick = arch_thick;