--- /dev/null
+# Test 6 #
+
+Identical to [Test 5](test5.html), except using our new PVC pipe cap
+casting tube caps. We hope that since these leave explicit air gap
+above the propellant, that we'll get "cleaner" grains with the mix
+self-leveling in the casting tubes.
+
+These grains were cast on 4 July 2015.
+
+## Results ##
+
+* Grain 1, ?g net
+* Grain 2, ?g net
+* Grain 3, ?g net
+* Grain 4, ?g net
+
+## Observations ##
+
+Pour again went really smoothly.