Most interesting, Im contemplating to do the opposite of you, to coat carbon body with copper and use that material as computer case.
As much I have figured out graphene is thermaly conductive in its 2D lattice, so... it would need to be having contact with CPU at one end of it and transfer heat to another way.
Instead of electroplating copper block... why not try to electroplate really dense seandwitch of really thin copper straws/wire, something that would look like cut in middle really fat cable? or maybe try some dense copper sponge and electroplate it with graphene.
Plus did I miss something but in pencils is mix of graphite and clay, graphene is there in graphite in traces but to get it you need to process graphite and separate it out.
Check youtube, there are really handy DIY make your self carbon, graphite and graphene process Il try this summer, not all requiere high temperature furnaces thank God...
This make me thinking... When you are playing with electroplating atm could you do some testing and trying to do some electropolish onto lapped metal surface??? Im really interested to try some electropolish onto lapped heatsinks and what kind of effect onto heatsink heat transfer will that have
plus when you electroplate... it would be handy to have ... the surface of side that is giving away material at last of equal surface and in direct opposite to surface you are coating, that way material plating should plate equally.
Plus when electroplating copper use Copper(II) sulfate, can be bought enywhere and is cheap
Edit: damn Im ussing to much plus...Edited by Hrv123 - 3/20/14 at 1:13pm