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I have not had an issue with it. It will dry out. And, the nylon can be annealed to increase rigidity if desired.

 

It seems to be an odd material on that front as many people also dye loose spools for color combos and it prints fine when dried.

 

Here is one article on it and here is another article on it.

 

And there are people who post process the dyeing afterwards like this.

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Not that I am aware of. I experimented with it and was pleased with my results, but it was limited to just a few tests and UM Nylon. I have not dyed my nylon yet.

 

My first tests were crude as I used a very non-critical gas oven to test and let us say that it was not a very accurate temp. A couple got a bit spread on the bottom of the print due to immediate heat transfer from the metal pan I used to anneal on and then print. But it will probably vary according to brand and type.

 

Print a few test objects and just heat them. But try to keep it just below the Tg point so that it does not just turn to goo.

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