I have been 3D printing since November, getting pretty good with ABS and now PLA. I think it is time to try out PVA for disolvable supports.

I have read all the warnings about not letting it sit at over 200C for any period of time and plan to print it in the 180-190 range (depending of course on how well it performs).

My real question is about letting it sit out, hanging on the back of my printer. Is it really THAT sensitive to humidity? I like to print in the evenings, taking the object off the printer in the morning. Is that feasible with PVA? Or must I print, then put the spool immediately in a sealed bag. I am not printing out in my garage, I am in a normal home office that is centrally heated and cooled. How careful do I really have to be?

Any advice you may have to offer is appreciated.

Steven