I print a lot of Nylon and PVA works extremely well with Nylon.
I bought a box of 2 gallon zip locks. I keep one or two spools in each bag. I also bought these:
https://www.amazon.com/dp/B01JOPJ0HA/ref=cm_sw_em_r_mt_dp_U_pGpDDb61T4H25
Which are rechargable. When they lose their red color I microwave them.
Then I just put the spools on the printer. If humidity is > 60% you might want to keep the spool in the bag. I did that a few times but haven't done that in the last year and the filament works great. I have had a few spools get "wet" when I left them out for a few weeks but it was easy enough to dry them (put them on the heated bed overnight under a towel).
When filament gets very wet you can hear it pop and fizzle as the steam boils as you print. Or if it's only a little wet the nylon comes out more like snow instead of transparent.
I'm not sure why anyone needs to buy a "vegetable dryer" when the printer has this built in temperature controlled heated bed.
Oh - and like Smithy says, no need to use the NFC chip. It takes maybe 4 extra seconds to scroll down to Nylon and select that.
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Smithy 1,146
I use the Polybox which is simple but works great. I have no need to use the NFC function, it only detects the spool when loading but you can also choose the material manually. There is no more difference or other functionality behind the NFC detection.
I think I have seen a DIY box for the back of the printer somewhere on Thingiverse. But I don't think it will be so airtight that it works like a Polybox. They use just a IKEA Box with some printed parts.
A dedicated dry box from Ultimaker which fits nicely on the printer would be great, but I don't know the roadmap if such a box is planned. On the other hand, the S5 has an extension port on the back. So maybe we will see some addons in the future.
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