Hi everyone,
( Because my knowledge is limited and your site is so extensive I'm unclear as to the best place to post this question. - please move it if it is necessary.)

I'd like to build something that will freeze a marble slab or a stainless steel plate to make ice cream.

First, I understand the theory or basic concepts of refrigeration; I even put ***** into my old 68 Cadillac way back in 1975.

That being said, I have always liked the GM A6 compressors from those older cars. They had an oil reservoir which I think is better than oil in the ***** - but I could be wrong, they were very efficient as I remember. I did a little research on this...

Here's the rundown on the compressor.
The model A-6 compressor was used by General Motors for more than 25 years. The A-6 was Frigidaire's first axial designed compressor. This compressor used a cast-iron cylinder and heads with a steel case and "swash" plate. The A-6 designation related to its axial design and the fact that it was a 6-cylinder compressor unit. The interior of the compressor also had an oil pickup and sump system to lubricate the internal parts. The A-6 compressor will push out 27,000 BTUs at 2,000 rpm (2.25 refrigeration tons) and as high as 42,000 BTUs at 4,000 rpm with a discharge rate of 240 p.s.i. That's enough cold air to cool a small house (most home window-mounted air conditioners are only rated from 5,000 to 12,000 BTUs). The compressor functions much in the same way an engine does but without the ignition and combustion strokes. An A-6 is rated at 1.5-inch bore with a 1.2-inch stroke and 207cc displacement. That's about 12 1/2 cubic inches. The A-6 is also highly adaptable. It can run in 6, 12 or 24-volt systems if you install the proper clutch coil.

They are a pretty resilient unit too; they can turn consistently at 6,500 rpm all day without overheating, and you can turn them in either direction and they will function in the same way.

I'm thinking that if I scavenge an old Car AC system with the A6 compressor, I can use the condenser, the dryer, the sight glass gadget and the expansion valve.

The evaporator is what needs to be different and it needs to be rectangular and flat so it can be put under a marble stone.

My question is this. Can I use the evaporator from an old freezer?
Here are some picture examples of what I'm thinking.

If the curve of this could be flattened
http://image.made-in-china.com/4f0j0...d-Ice-box-.jpg

If the tubes of these could be bent or cut and refastened to make it flat
http://image.made-in-china.com/4f0j0...vaporator-.jpg
http://image.made-in-china.com/2f0j0...Wire-Tube-.jpg

Can these things be connected in series?
http://i00.i.aliimg.com/photo/v2/537...evaporator.jpg

http://www.bizrice.com/upload/201201...evaporator.jpg

http://i01.i.aliimg.com/img/pb/479/7...744479_179.jpg

or can I make one out of copper tubing that sits on a plate?

How I got this idea is that I had a friend way back in the 80's that used an A6 to cool his house. He built an A-Frame out of two condensers and had a fan blowing upwards through that and he use a different evaporator. A washing machine electric motor powered the condenser. It worked GREAT!

I don't have an hands on experience or working knowledge about this regarding the size of the evaporator vs the size of the condenser.

I'm guessing that A6 would have plenty of power to do the job.

Any help or suggestions would be appreciated.

Thanks!