/diy/ - Do It Yourself

>>2758139
I have a drywall/sound foam/mylar emergency blanket enclosure for my e5s1. The bed takes 10 min to reach 110C. At the max bed temperature 110C, the time constant is around 30 min. The fan wasn't running, so the two DS18B20 near the lid (3,4) are much hotter than the other two below the build plate. I can do small (3" OD) nylon spur gears but warping is too much for helical gears. Printing on FR4 helps. Brims are better than rafts.
I tried a "400" W PTC bga plate. After I insulated the lid, I no longer need it to get 40C. Radiant heat and/or AMG8833 would be interesting but probably unnecessary.
My wrong intuition is that thicker faster layers without a pause would have less warping. Each line wants to shorten by 0.3% if the chamber is 40C below Tg. If the first layer is half done shrinking, the first half of the second layer's shrinking matches the shrinking of the first layer. So if the first layer is already cooled, the residual stress caused by the second layer will be higher. Higher residual stress apparently doesn't lead to higher strain.
I will also experiment with pauses and layer height.