Exactly... I use the same backplate when I mount a phase unit as I use with my dice/ln2 pot, only the studs stay in the backplate, I just put them through from the back side; Then all I have to do is slide the evap/pot mount down and install the springs/thumbscrews.
The main reason I use that backplate is because it's made of aluminum and won't flex, I like to use a lot of mounting pressure and a backplate made of anything but metal has to be too thick to prevent the board from bowing too much.
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