1 files changed, 2 insertions, 2 deletions

diff --git a/pushfittery.scad b/pushfittery.scad
index ee3bbd0..6b6ec2e 100644
--- a/pushfittery.scad
+++ b/pushfittery.scad
@@ -1,3 +1,3 @@
-layer_height=.2;
+layer_height=.2; epsilon=.01;
 draft = true;
 
@@ -16,5 +16,5 @@ module pushfit(pf,draft=draft) {
   tpi = pf_(pf,"tpi");
   if(draft) cylinder(d=d*minch,h=h+epsilon);
-  else english_thread(diameter=d,threads_per_inch=tpi,length=h/minch+epsilon,internal=true);
+  else english_thread(diameter=d,threads_per_inch=tpi,length=(h+epsilon)/minch,internal=true);
   slitl = d*minch+layer_height;
   slitw = 0.8*d*minch/2;