Thanks J, I can't test everything the way you have been doing but wanted to at least provide the ash weight and volume. It would be nice to get a run time also as well as heat temp. I'm just curious to see how my results, of these three I did, compare to other stoves burning the same brand. I don't see PrestoLogs or Nature's Own Fuel in the list of the first post but see the newer bag of TC waiting for results and am wondering if you now have the newer TC's to test. Wonder if different stoves create different amounts of ash and can't wait to see your results for TC to compare to my results, if you do have TC ready to test.