Thread: edges not flatting !!!!!!

hello everyone i was lapping my Norton 4k/8k and all was well but i cant seem to get the edges as smooth as the center (darker than the center of the stone) does this normal??

Sounds like it needs more lapping, did you make a pencil grid on the stone and completely removed it? might have to do this twice.
Like this:http://straightrazorpalace.com/srpwi...ne_Lapping_101

Originally Posted by Martin103

Sounds like it needs more lapping, did you make a pencil grid on the stone and completely removed it? might have to do this twice.
Like this:Hone Lapping 101 - Straight Razor Place Wiki

yes sir i did about 4 grids of lapping on a marble tile with 320 norton wet/dry sandpapaer

Is this on the 4k side or 8k?

on both sides
edit the 4k looks ok having problems on the 8k side

If your tile is flat you can check with a straight edge or square, i would say keep going until its completely even, is the stone flat? Some have said that the newer Norton needs more lapping on the 4k side up to 1/8 or 3-4 mm.

Originally Posted by Mrnighthawkx

on both sides
edit the 4k looks ok having problems on the 8k side

If i remember correctly the 8k side is somewhat like an orange skin surface, that all needs to be lapped out, should be very smooth and even.

i think i got it even all around i tried to set a bevel and im thinking its not sharp enough i go to the 8k side and i see medal particles soo im not done setting the bevel right??

EDit I just used the thumb nail test and it catched all the way through. fin with the pyramid and strop and its razor sharp thanks everyone.

seems like it took me FOREVER to get my norton flat and i was using a DMT325 , my corners about 1/2" in gave me a back ache leaning over the sink !! but after a lot of time it was all even !! although still pretty new to all this i would think you would need to keep hitting it like Martin103 suggest .

When I recently lapped my Norton I had to lower the grit to 180 wet/dry as 2 corners on both the 4K & 8K were slightly lower, & I tried lapping it with 600 grit (all I had at the time) but it was seriously slow work, I ended up putting it down & coming back to it with more agressive sandpaper & then moving to higher grit, finished the 4K with 400 grit & the 8K with 1,000 grit. Once it was really really close I just rounded the edges & called it done. Only tried the 8K side for a touch up & that worked out really well for me.