@Grant-Fraser, I have often wondered if our chiller unit may be too efficient. This seems like a valid issue. I had assumed that the tubes were likely borosilicate glass and should stand up to the temperature changes better without cracking.
I’m wondering if a less expensive laser tube might be associated with less expensive glass thereby increasing the failure rate, especially with overkill cooling. I’m not saying we have that, just that if we did, it would kill cheap glass faster than HQ borosilicate glass.
I have no idea what any of the tubes are actually made of, but maybe it is something worth examining when we are comparing specs.
@pierre Sadly, I did not note the hours. I thought about it after writing down the date but the laser was running again by then. You need the key to get into where the meter is? It probably ran an hour or so tonight between the filter change and when I left.
Windser plywod and home depot both carry clapmans for the bowl/cutting board wax. I find clapmans is a great product and made in BC. It’s in a little white plastic round container. If you have trouble finding I have some you could use as well as some beeswax if you decide that route. Clapmans is a mix of a few things.
I would would go mineral oil over
coconut oil. You could even just set it in a bath of mineral oil and let it soak for a few minutes.