disposable rocket cone: minor mods

diff --git a/disposable-rocket-cone.scad b/disposable-rocket-cone.scad
index 6000ad0360bd522a8b0c05d58de6410d4f13aa53..26534f506a7e2e88a7f77b01435af7c70bfebb6f 100644 (file)
--- a/disposable-rocket-cone.scad
+++ b/disposable-rocket-cone.scad
@@ -1,8 +1,10 @@
 
-// motor prumer 17.7, delka 69.5
-// tycka prumer 3.4 mm
+// The Estes A8-3 and C6-7 motors have diameter of 17.7 mm,
+// length 69.5 mm. The Estes Alpha launch pad has rod diameter 3.4 mm.
 
 eps = 0.01;
+infty = 1000;
+
 
 r_vect = [
   25, 25, 25, 24.95, 24.8, 24.7,