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I think BladeRunner knows better than that!
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I had to ask!
, he uses 'T~Cut' car paint restorer cause it can be sprayed with laquer without any special cleaning. Can you get T~Cut in US and Europe?...
I'd like to see an article on the best way to lapp different things, how tight a circular motion is best, how to avoid the edges rounding, ect. Also an article on lapping chipsets(NB & GPU),
I could'nt get a hit anywhere searching for this!!. How many VIA or NVidia chips you seen that are'nt dipped badly into the middle?, even the Cu/nickle~plated covered Ti cores are!.
I usualy us a mirror for lapping HS's, an oldish one(not antique but not the paper thin crud you get nowadays) with thick glass to lay the paper on. when I lapped my NorthBridge I got some scraps of 6mm glass cut into 1.5 and 2inch(1.5 covered the chip nicely & did'nt hit the Caps & resistors[to much!]) squares then covered them with W&D. I'd do my GPU like this to before I H20 it.
One thing I've learnt is not to be scared of using a course paper to start with if there's a very uneven surface(chipsetHS's) to start with, you can loose patience and start to loose the 'nice circle' motion if you see too little progress.
BillA!, why not use a buffer/tool?, do you mean just on the TI/CPU~side surface?. the body of the blocks OK though is'nt it?...