Where can I get a copper plate to increase the heatsink area on the CPU and Chipset in a nettop?

Question

Do it yourself

The essence of the question is this - there is a radiator (ala for the CPU), but the area of ​​\u200b\u200bthe plate is small (of course it is used because it is not intended), you need to slightly increase the area, as an option by placing a plate of copper, but the question is where to get it, there is nothing on sale and on the Internet I have never seen anything like it and I can’t even imagine where such things can be applied in practice.
I need a plate with a diameter of about 7 cm or a square with a side of about 7 cm, where can I get something like that?

Answer 1

In general, I solved the issue differently, I found a heatsink for a CPU with a non-standardly huge plate area :) I'll install it.

Answer 2

Maybe you should look at the color-met reception points? Theoretically, there may be trimming of the copper bus.

Answer 3

Smelt!

Answer 4

On the market.

Answer 5

You are going down the wrong path. By placing a plate, you will get one additional gap and complete crap on the heat conductor at the other end. And as a result, it will only get worse, unless there will be no local overheating.
The right way is to buy a blank of copper and cut it yourself.
And where to buy. Google: copper blank buy

Answer 6

You can take a tube for the air conditioner, it is made of copper - cut and roll out evenly.
I think that with a sandpaper glued to a flat flat surface, or simply with a belt / vibration surface grinder, you can grind it to a decent flatness. The only thing that will be difficult to achieve is the parallelism of the planes and blockages at the edges of the plate. Parallelism, of course, to some extent will be provided by an initially even workpiece, and it is not so important for your purposes. But it’s easy to get rid of blockages like this: a larger workpiece is taken, polished, then cut to size.