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nylon absorbes water? PVA?

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Posted · nylon absorbes water? PVA?

Hello,

 

Ultimaker supports nylon in combination with PVA.

In this video the guy told around 1:50 that you should avoid using nylon with PVA.

He told that nylon would absorbe water. Who/what is right?

 

 

Regards

Hans-Peter

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Posted · nylon absorbes water? PVA?

Hmm, it is correct that the Nylon filament absorbs a lot of moisture from the air, more and quicker than PVA, so you have to keep both spools in a very dry place and depending on your air humidity also during printing.

 

But I think you mean if Nylon absorbs the water during the dissolving process of PVA. Good question, but I don't think that this is really a problem, but haven't tried it myself yet. And in case it absorbs a little bit, the model dry again when you have dissolved the PVA supports. If that were so sensitive, you wouldn't be able to expose nylon printed objects to higher humidity, but that's no problem.

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Posted · nylon absorbes water? PVA?

Indeed it does absorb humidity after being printed. And it will become slightly larger. And the properties will change somehow. But you won't heat it up to 260°C, do you? So bubbles won't be a problem. Only if you are printing electrical isolating parts or something to work in a strong electrical field, it can be a problem. But otherwise - the properties will be better.

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Posted · nylon absorbes water? PVA?

Hi guys, trying to learn from others here a bit. So nylon will take in moinsture after being printed, but that will not impact its strength and mechanical properties?  

 

 

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Posted · nylon absorbes water? PVA?

Not sure if it's of any use but I currently have some ultimaker nylon parts in use in Arizona. They are being being subjected to water and the sun daily and not fairing well either structurally or dimensional y.

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