Is moisture build-up in a "blast oven" a problem?

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1

I’m thinking about getting one of the cheap Chinese “blast ovens” from Amazon to use for filament drying.

Does anyone have practical experiences to share using one of those ovens for drying filament?

I worry that moisture build-up inside it, will be a problem. Even with the vent open.

(I’ve tried several food dehydrators but the temperature swings are too great)

2

You might also consider an air fryer. Mine (Cosori Turbo Blaze) keeps temperature constant within ±2…3°C and exchanges the air.
I assume that cheaper air fryers are just as good, just can’t give you first hand experience.

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3

A bunch of us have Chinese forced air ovens, I run mine with the vents open and have been meaning to put high grade RH sensor in to check, but anecdotally it seems fine. Filament dries in it.

Mostly I use my food dryers and according to the thermocouples the regulation is excellent, but I’m using big ones.

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4

Thanks for the input. I decided to take a change on a Chinese forced air oven. When it arrives, I’ll put a datalogger on it, to see how the humidity behaves.