I've been looking for something along this line for quite a while and it seems it has finally arrived. I bought one.
It has STEEL clips(never break) which are quite versatile in keeping your motherboard nicely clamped to the hot plate in a variety of positions. It has interchangeable hot plates for iphone X, XS, iphone 11, iphone XS max, iphone 11 pro AND ANDROID. Previously there have been plenty of good preheaters(with clamps)specifically designed for iphones but none for Samsungs etc. The only downside to this one I can see is its high profile - means I have to set the microscope to maximum height.
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