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Joined 2 years ago
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Cake day: June 10th, 2023

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  • Not so much go bad but kinda like others have mentioned, moisture in the air will always eventually get soaked into it. It’s worse with other filaments - Nylon, PETG, and ABS are particularly bad for it - but PLA definitely shares the same issues. Moisture from the air also doesn’t just suddenly leave - you need to manually and purposefully dry the filament out with a filament dryer or food dryer. Moist PLA can print just fine, but the moisture can also cause the filament to be super brittle, and/or cause little bubbles or breaks in the filament after it comes out of the nozzle.

    Not sure why it would appear to have happened suddenly after a number of years, but I have a suspicion that it probably didn’t happen quite as suddenly as you think it did. Could also be the shape of the roll itself - maybe it’s got little “windows” towards the center of the roll that allowed in more moisture than the closed-off portions and you only just now used the roll up to that point?


  • An HBA (host bus adapter) is a SAS controller (or rather, has a SAS controller chip on it). You mostly just want to make sure that your host (the server) has enough physical PCIe lanes to use the whole card, otherwise you’ll get bottlenecked there. You also want to check whether you’ve got 6G SAS or 12G SAS capability. If your drives only support 6 gig, for example, there’s zero point in buying a 12G SAS card, which is actually nice because 6G cards are a lot cheaper. You do want to make sure you actually need an HBA and not a RAID controller though - they’re easily confused. Not sure if I actually answered anything there but I write SAS firmware and use HBAs all the time, so feel free to ask me more and I’ll try to piece together a coherent answer.