I'll be curious to see the results of Radhika's thermal model - I am suspicious of this thermal strap contact to the base plate. It would be good if we could instead make a copper mating plate:

1. groovy milled out loop holder for the strap to go into such that the contact surface is larger
2. flat base to get smushed into the colde plate
3. thru holes so that it can be directly screwed down with some washers
4. screwed down with a torque wrench so that we know that its really tight (i.e. "I think its pretty tight" doesn't really work when we want a good thermal contact)
5. someone with a MechE degree calculates the proper torque such that we plasticly deform the copper and get it to sit more flush to the cold plate
6. a cap for the copper plate that really smooshes the copper strap into the bottom part of the mating plate.