Thread: Lapping A New Norton 4k/8k

10-25-2012, 02:56 AM #12
gssixgun

At this point in time...

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Some enlightenment

Norton 4k

Made in USA
Made in Mexico
Made in Italy

There are many different recommendations for lapping because these are all slightly different in smoothness

The earlier 4k's were the USA ones and required near zero lapping, then they changed to the Mexico made and the stones required near 1/8 in to get right, these improved over time, most of what you find now are Italty made and require very little lapping again... basically lap until smooth as mentioned above..
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The Following 4 Users Say Thank You to gssixgun For This Useful Post:

Hirlau (10-25-2012), mapleleafalumnus (10-27-2012), mloyd (10-27-2012), tinkersd (10-25-2012)