From 2903c593fc94bc6c5fa1d1d55df20a6834ddbc6d Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 3 Jun 2017 18:01:52 +0100
Subject: [PATCH] sewing-table: Test uses hull, not minkowski

---
 sewing-table.scad.m4 | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index fa5af0f..0f556d2 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -193,9 +193,11 @@ module TileBase(botleft, topright){
 	    cube(concat(topright_post-botleft_post, [tile_th+2]));
 	}
 	shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
-	minkowski(){
-	  Machine();
-	  cube(shufflesz, center=true);
+	hull(){ // poor man's minkowski
+	  for (xs=[-1,1]) for (ys=[-1,1]) for (zs=[-1,1]) {
+	    translate([xs,ys,zs] * shufflesz)
+	      Machine();
+	  }
 	}
       }
     }
-- 
2.30.2