This is related to this thread and conversation about knives and pocketwear...I believe it falls into the spirit of the traditional forum as we were discussing the effect on traditional methods of carry and tradition knives were tested..............I think I showed it to the Buck forum a year or two ago.
I wondered some on that pocket wear issue myself so I invented this test. Took a rock tumbler, put a relative new looking knife in some corn meal (grits), coins, a paper clip, piece of denim and I believe a washer also. Ran it for what seemed like a long time. Got tired of hearing it anyway. 120 hours, turned out to be not too much of a wear test. Maybe I should have used more coins. The bolster got dull, a few scratches were noted. Old style was scratched but new style like new. Dymondwood scale showed some dulling more so that the Delrin. All in all not bad.
Test device.
This was view of Delrin sawcut scale with NS bolsters in 0 hours condition. Old Camillus made 305
This was view of same after 120 hours. How much pocket wear this represents is your guess.
This is the newer Dymondwood version. O hours.
Dymondwood version after 120 hours. Knives were tumbled by themselves, not together. These bolsters showed effect more. Actually the NS bolsters of both knives held up well. The brass liners on the older model got polished.
Closeup of the scale shield after tumbling. The Dymondwood scale was one of the very first issues, I complained about the buffing hit on both rivets and the glue around the shield, thats also why it was a test subject. Those factors were quickly fixed in later production and other Dymondwoods had clean rivets and tight shields...
Semi-scientific test that relates to the talk on pocket carry, I could of used tougher medium and ran it longer but like I said I got tired of hearing it running.........The way the photos were taken could be a hugh effect. I attmepted to place all knives in the same position under the lights.........300Bucks/Craig H.