3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
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I thought it was pretty common knowledge that these dryers lack airflow. There are tons of printable wedges in printables.com and thingiverse.com to keep the lid open.
This alone speeds up drying massively. Adding a small fan to the opening might be even better but I never found it necessary.
Maybe. I actually have a dehydrator I use with plenty of airflow.
But I think that only solves part of the problem because that makes it really good at drying the outside but it's still going to have trouble past the first couple layers. I think the fact moisture would also have a hard time penetrating means current options work well enough.for most people.
Anecdotally I can support this, recently I had a particularly old roll of petg that I dried for a larger print and later in the print started getting all stringy and messy.
I guess it depends on where you are. Where I am the air is a lot less humid than in other places, and I have the opposite effect. I put the filament roll in the dryer and start printing. As time passes, like the filament gets dryer and stringing reduces.