Recently got a marketing email from Formlabs quoting a statistic the LT tank “reduces the likelihood of a print failure by as much as 57% compared to a Standard Tank.”
I’m skeptical of this claim. I don’t doubt their collected data shows 57% less failures, I’m just not convinced it proves a causal relationship.
e.g. When I’m doing experimental stuff - which is more likely to produce failures - I tend to avoid LT tanks. That’s namely due to their cost (for work that’s disposable in nature, e.g. resin alchemy, I pick the more disposable tanks) and concern over abusing the premium tank surface (i.e. more scraping = faster wear). So I know I’m skewing the numbers a tiny little bit.
I expect outfits who are doing continuous “production run” manufacturing have switched to LT tanks, primarily to take advantage of their longer life (lower TCO). They’ve already dialed in their designs to the print process and resolved other factors likely to produce print failures.
I’d be interested in seeing data from a long-term experiment where a variety of identical prints were sent to LT and Standard tanks over their useful lifetimes. And hearing from users about their experiences with any tricky prints that failed in Standard but subsequently succeeded in LT.
I accept longer lifetimes alone would lead to reduced failure rates, since you get a lot more successful prints out of the tank before fogging starts to produce failures. Also that anything to reduce peel forces helps (i.e. non-stick layer). So I have no trouble believing LT tanks do reduce failure rates, I’m just not sure all 57% is accounted for by the switch. I think of Formlabs as having a fairly data-driven track record in analysis like this, and kind of expected a bit more rigor.
What do you guys think? Am I being too hard-headed, and have you noticed higher success rates from LT?