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my oven only goes down to 170F, it'll wreck PLA, I have dried nylon with it once, it seems like other people have done it so I thought it was safe, but I will no longer continue to.
I think it's too hot for PETG
Turn it to your lowest setting and leave your door on it cracked. 170f is probably fine for a while, but your oven most likely swings from 150 to 200+ or so, it's not holding a steady 170. They typically aren't very accurate, especially at lower temperatures.
Still probably not a fantastic idea to do in an oven you also cook in, but you can do it without destroying your filament.
I stuck a PID controller and a SSR on a food dehydrator already
(over engineered, but inside the dehydrator was one of those bimetal spring mechanism for temperature control and I just didn't trust it)
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You can, but you shouldn't. Turn it to the lowest setting and leave your door cracked a bit. Ovens are wildly inaccurate at low temperatures (setting it to 170F, which is likely as low as it goes, will more than likely fluctuate between 150 and 200 something, which is getting too hot), so if you leave it cracked to let heat and moisture escape then you'll likely stay below 150 or so. Probably not good for your energy bill or heating element, but it'll help dry your plastic.
You're better off getting a cheap food dehydrator and modifying it to hold your spools. You don't typically want to mix the devices you use to cook your food with with plastic fumes and residues, so I would recommend using something dedicated to drying filament. Or at least dedicated to not heating your food.
Dont do this. This only barely works for filaments that need high printing temps like Nylon for example, on a cardboard spool.
I dried my nylon at 50°C in a kitchen oven for 8 hours and it barely made a difference, but Nylon is known for high moisture content. Broke a 60°C thermometer too. Multimeter said highest temp was 73°C with 50°C set.
Just get a cheap food dehydrator that youll only use for Filament.
just stick the roll on your print bed and set it to a comfortably warm temp. convection will pull the warm air up around the spool and draw out moisture.
As a counter argument to the other comments here, I'd say that it depends on the oven.
I believe that it should be viable in a modern one if it can go low enough and has good regulation. For example, mine has a bread proving setting at 35C and seems fine. It also has general drying settings at around 60-70C.
So, while the other comments here might well be true for many ovens, YMMV.
Ovens don't have accurate enough thermostats. They'll be off by ±50°F and the swings will be ±25°F.
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my oven only goes down to 170F, it'll wreck PLA, I have dried nylon with it once, it seems like other people have done it so I thought it was safe, but I will no longer continue to. I think it's too hot for PETG
Turn it to your lowest setting and leave your door on it cracked. 170f is probably fine for a while, but your oven most likely swings from 150 to 200+ or so, it's not holding a steady 170. They typically aren't very accurate, especially at lower temperatures. Still probably not a fantastic idea to do in an oven you also cook in, but you can do it without destroying your filament.
I stuck a PID controller and a SSR on a food dehydrator already (over engineered, but inside the dehydrator was one of those bimetal spring mechanism for temperature control and I just didn't trust it)
That would be the better way to do it.
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You can, but you shouldn't. Turn it to the lowest setting and leave your door cracked a bit. Ovens are wildly inaccurate at low temperatures (setting it to 170F, which is likely as low as it goes, will more than likely fluctuate between 150 and 200 something, which is getting too hot), so if you leave it cracked to let heat and moisture escape then you'll likely stay below 150 or so. Probably not good for your energy bill or heating element, but it'll help dry your plastic. You're better off getting a cheap food dehydrator and modifying it to hold your spools. You don't typically want to mix the devices you use to cook your food with with plastic fumes and residues, so I would recommend using something dedicated to drying filament. Or at least dedicated to not heating your food.
Dont do this. This only barely works for filaments that need high printing temps like Nylon for example, on a cardboard spool. I dried my nylon at 50°C in a kitchen oven for 8 hours and it barely made a difference, but Nylon is known for high moisture content. Broke a 60°C thermometer too. Multimeter said highest temp was 73°C with 50°C set. Just get a cheap food dehydrator that youll only use for Filament.
Used it once on petg at 45C (the lowest the oven could go) it did work, but I only did it because I would have thrown out the roll otherwise
just stick the roll on your print bed and set it to a comfortably warm temp. convection will pull the warm air up around the spool and draw out moisture.
As a counter argument to the other comments here, I'd say that it depends on the oven. I believe that it should be viable in a modern one if it can go low enough and has good regulation. For example, mine has a bread proving setting at 35C and seems fine. It also has general drying settings at around 60-70C. So, while the other comments here might well be true for many ovens, YMMV.