I’m using an ender 3 with a 0.4mm nozzle
Gotta be careful with ovens.
First they have a huge gradient and it may not be 60c in there even if the oven says it is. If you must use an oven, the best is to set it to bread “proof”- this setting is used to let dough rise and usually isn’t all that hot. (Though…. It could be. It’s inconsistent sometime,)
Remember, glass transition is usually about half the melting temp, and you want to be about 2/3s that at the highest. If you go past it, you might get sintering- the filament sticks to itself.
Personally, a cheap food dehydrator is going to do the trick. Alternatively, a tub with moisture absorbing beads bulked up in the bottom and few days or a week or two should do the trick gently. (You can buy big ass jugs of the beads at big box hardware stores or Amazon. Hell you can get 55 gallon drums of them if you really wanted to…)
True, I’ve seen many molten rolls of filament because of overly warm ovens. Make sure it doesn’t go over 60C and you’re good. Mine is good, has a little overshoot when heating up, but if you let it warm up first and then put the filament, it generally stays very close to 60C. I havent had problems. Other ovens - be careful. Food dehydrator is better, but if you don’t have it, you may as well buy an actual filament dryer. Desicant beads didn’t work for me. They do the trick of maintaining the dryness, but if you have ANY built up moisture in your filament, the beads won’t do much.
