I bought the metal case for Khadas Edge2 from KKSB Cases.
Here my video : https://youtu.be/pt3rAV5W57k?si=XZieObMHU1NLtADz
I like it a lot. Using the thermal pad delivered with it it only reaches throttle temps after about 25 minutes maxed out and never throttles heavy.
And idle under 40C.
Referral link with coupon code for 10 percent off in video description.