I've been experimenting with a different filament. PLA/PHA works reasonably well for bullhead chairs in 00 but it doesn't seem to be quite strong enough for the low-profile securing methods associated with flat-bottom rail. At the moment I'm using PETg which is pretty tough stuff. It's used to make those annoying disposable water bottles than seem to be everywhere.
The snag is it's not as easy to use for printing as PLA. It tends to drip and ooze if everything isn't just quite right. We'll have to see how it goes.
It does work well for larger mechanical items. It's almost as good as injection molded nylon but the fine details required for 00 track might be pushing it beyond its limits.
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