this post was submitted on 08 Jul 2023
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I recall a video from one of the 3d printing youtubers that showed that an enclosure could allow plastic printer parts to warp, causing prints to fail. It was really a surprising result to me, since I was considering buying an enclosure for my tevo tornado (which is mostly metal, but not entirely especially after some printer upgrades I printed)
A handy chart: https://i.pinimg.com/originals/18/a4/2f/18a42ffa5c733c7c6bb86b547fb0647f.png
It's a cruel irony that we use an enclosure to help print materials with a higher Tg but the printer itself is printed of materials with the same or lower Tg. It makes perfect sense that your ABS parts are going to get mushy when you crank your heated bed to 100 and put the whole thing in a box. :)
The enclosure by itself isn't really a complete solution, especially if it's a retrofit and not original to the printer. Temperature monitoring and control is necessary.
But you can also take the very simple step of leaving the enclosure slightly open (if it has a door, prop it partially, or if it's one of the growbox style zipper enclosures with mylar on the inside just leave the zipper partway open near the top). You'll still get most of the draft protection benefit and some of the temperature stability inside the enclosure, but it won't overheat.