X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=inline;f=biscuits.scad;h=c230477807309dbb2d116b6a4b767c0af76fa2fe;hb=2ebcf7a8600e5e939907b6939e0c4d20ade5b836;hp=229e377bae6d90d5cc3920d4da4fc88ad2e028be;hpb=b77b415524cb916f64aaa73bed2cb7e9fb2fc477;p=reprap-play.git

diff --git a/biscuits.scad b/biscuits.scad
index 229e377..c230477 100644
--- a/biscuits.scad
+++ b/biscuits.scad
@@ -1,12 +1,30 @@
-rad=30;
-hbase=28;
-voff=10;
-height=70;
 
+scale=1.0;
+rad=30*scale;
+hbase=28.4*scale;
+voff=10*scale;
+height=70*scale;
+
+wallheight = 15
+thick=0.8;
 
 module flatsolid() {
-	circle(r=rad);
+	circle(r=rad,$fn=50);
 	polygon(points=[[-hbase,voff],[hbase,voff],[0,height]]);
 }
 
-flatsolid();
+module mink() {
+	minkowski() {
+		flatsolid();
+		circle(r=thick/2);
+	}
+}   
+
+module hollow() {
+	difference() {
+		mink();
+		flatsolid();
+	}
+}
+
+linear_extrude(height=wallheight) hollow();