Thank you for the comment!
You can see the parts in the pictures in the post. Yes, as far as I can tell, only a few layers were printed, then I lost adhesion. The build did stay on the tank’s floor, from which I had to scrape it off. The machine kept going until “finished”, but did not print anything for more than 90% of the printing process.
I will try angling the parts next time, did not think it was necessary since the first test print, which was not angled, went so well.
Here’s the study, for anyone who wants to read it. It’s surprisingly short and open access.
A few things:
The participants took Wasabi supplements once a day for 12 weeks, not just normal Wasabi. In each pill, there was 0.8 mg of the active compound (6-MSITC). Quick googling gave me the following for the level of that compound in actual Wasabi:
In other words, you could actually also get the same amount of 6-MSITC that was in the supplements by eating a few grams of regular wasabi each day, assuming that the processed stuff still has similar levels. The abstract provides a reasonable summary of the study, and of the fact that it agrees largely with some previous science on the subject (although there’s not a lot, two studies in small journals):
They tested the study participants once before and once after the 12 weeks of daily wasabi supplements. The participants were not tested for any long term cognitive effects.
As someone else has pointed out here in the comments, the study does list a Wasabi company as one of the sources of funding:
Also, I don’t want to poison the well too much, but I feel like I should mention that the editorial board of the journal resigned in 2018 because the publishers “pressured them to accept manuscripts of mediocre quality and importance”. Doesn’t mean it’s all bad, but it’s a very early study and more research should be done.