what surface do you all use for lapping

bigjimmyauk · 4 Jan 2010 at 23:57

I was thinking about a thick piece of glass as it should be respectably flat

any other ideas any of you could give me of a decent surface to get to work on

BigBruiserAl · 5 Jan 2010 at 00:00

Correct glass is the right way to do it.

fornowagain · 5 Jan 2010 at 00:01

Granite, chopping board etc. Usually been ground smooth and flat.

bigjimmyauk · 5 Jan 2010 at 00:31

thnax just wanted reassuring i was thinking at starting at 800 and working down to 2000 wet dry or is that too fine.

Bubo · 5 Jan 2010 at 08:29

Glass shelf out of the fridge is what I used.

BigBruiserAl · 5 Jan 2010 at 09:19

Any thing over 1500 grit wont do much except give a nice shine so its up to you if you want to put the time in

jaybee · 5 Jan 2010 at 09:27

Yeah I used my icemat (glass mouse mat) when I lapped my old CPUs and my banana shaped TRUE.

JonJ678 · 5 Jan 2010 at 19:02

I used a lapping table last time, but sadly I don't have access to that lab anymore.

Will probably use glass next time, wander around a dodgy neighbourhood until I see a largish piece on the floor I imagine. Glass shelf from the fridge deserves a look though, if that's viable it's far better.

setter · 5 Jan 2010 at 19:05

A sheet of glass that i "accquired" at work

cmndr_andi · 5 Jan 2010 at 19:47

I used the glass from an unused picture frame. This thing must have cost a few quid from Ikea and worked great. So far I have lapped 2 heatsinks and a CPU on it - very nice, flat finish.

I used 400 wet and dry, If I were to do it again I would probably start with 200-250 - save some time. If you start at 800 you will literally be at it all day.