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Lapped my BT! (finally)

post #1 of 26
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I finally found some 1500 grit sandpaper. It was at walmart in the auto section...

Pics:
First 3 - Before
Last 2 - After

Order:

1. Rough sanding with 320-grit Auto finishing sandpaper by hand
2. Light fast sanding with 1500-grit Auto sandpaper by hand
3. Toothpaste. by hand
4. final 1500-grit sanding by hand

I'm pretty satisfied, although I wish it looked as good as leimrod's TT120...




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post #2 of 26
smooth and flat is what is important, high shine is just bling, a satin smooth finish is adequate. However I know what ya mean about the BT. I had one here I traded, brand new and the finish on it was worse than my first cut of a block right off the belt sander.
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post #3 of 26
Rep+

When I get my 3800+ X2 I'm going to lap my AC64, got the lapping kit waiting.

Hope its as good as yours
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post #4 of 26
Nice results.

I'm going to by some sandpaper today for a lap job on my TT120/C2D, what paper would you reccomend?
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post #5 of 26
Hello, I have a question kinda off topic. Could someone provide a link towards a site selling lapping kits?

10x
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post #6 of 26
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post #7 of 26
Quote:
Originally Posted by fstfrddy View Post
smooth and flat is what is important, high shine is just bling, a satin smooth finish is adequate. However I know what ya mean about the BT. I had one here I traded, brand new and the finish on it was worse than my first cut of a block right off the belt sander.
Flat is the deal both of my Big Typhoons looked like they had been run on a beltsander with a convex platten. The bases were increcibly concave--as in zero contact with the IHS except on the perimeter. How these things worked for people who don't lap them is a puzzlement.

Looks like you did the right thing. Place a perfectly straight edge on the WB base and hold it in front of a bright light and it will become readily apparent if i is flat or not.

Good Job.
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post #8 of 26
Quote:
Originally Posted by Joeking78 View Post
Nice results.

I'm going to by some sandpaper today for a lap job on my TT120/C2D, what paper would you reccomend?
Try to get your hands on 3M wetordry jobpacks(5 sheets in each), they are highquality sand papers, you will need 400-600-800-1000-1500-2000 grit to get the job done.
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post #9 of 26
Thread Starter 
Quote:
Originally Posted by SHaCK View Post
Try to get your hands on 3M wetordry jobpacks(5 sheets in each), they are highquality sand papers, you will need 400-600-800-1000-1500-2000 grit to get the job done.
That sounds like a better rooute than the one I took, lol, although if you have scuffed up your HSF before, I recommend 320 grit or less to start.
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post #10 of 26
Quote:
Originally Posted by KSIMP88 View Post
That sounds like a better rooute than the one I took, lol, although if you have scuffed up your HSF before, I recommend 320 grit or less to start.
Not a bad idea, my BT had a so poor finish that i spent about a full hour on the 400 grit...it was so poor that i could feel scratches on the base with my fingernail.. now i can see my fingernail in it.. way better

I wouldn't go below 320 though, too corse, you don't want deep scratches.
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