I was asked who uses a convection/fan oven to dry their filament?

they have a Bosch electric convection/fan oven, which is digitally controlled and can hold temps down to 100ºF/38ºC. This seems like it would work fine to dry filament, right?

they can also add an external oven thermometer to watch temps, in case they fluctuate a lot, but given that the oven can be used for bread proofing, for example, I don't think it should be swinging wildly.

Does anyone do this? Have you had success, or issues? Yes, I know it's possible to melt all your filament in an oven, but has this actually happened to you?

Trying not to spend all my money on this hobby right away. I'm already $1000 in and it's been a week :D

Tried to make the response as simple as possible:

Absolutely.

 Key to using an oven to dry your filament is Threefold:

 1. Pre-heat the oven so it is not full blast furnace when you drop in the cold filament for a 20 minute 500degree ride 

2.  Have some type of buffer between any metal and your spool. The metal can heat faster than say, a silicone oven mit.  

3.  Keep it ten degrees or so below the glass transition temp of the material being dried.  So pla, less than 50, petg, less than 70, etc. Of course then you need to keep it dry afterwards. So at least keep it in a baggie.  Use (orange, not blue) desiccant if you have it.   This stuff is good.   last forever, and you can dry it on a cookie sheet, same way as above, but can touch metal.  Set it about 225 to boil off the water.

 When your wallet has recovered from cpr and you want to get a dryer, but a decent one like this. has heat, fan, and a way for the wet air to escape.

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