Scratching kydex

[judge]

I was once told by Kevin Wilkins that kydex sheaths should always be built with non-permanent rivets (chicago screws) to be easily opened for cleaning. He said that hard lint and other abrasives, maybe even remains of polishing compounds, tend to get embedded in the inside of kydex sheaths, and start scratching the finish with every draw/resheath. I recently noted this effect on a mirror polished blade with kydex sheath. The sheath is permanently riveted, so I couldn´t open it to properly clean it. I rinsed it thoroughly with water, but wonder if there´s still some lint remaining in the kydex.
My point: A) Why are nearly all kydex sheaths permanently riveted? Chicago screw construction would greatly help with cleaning. And B) what is the best method to clean the inside of a permanently closed kydex sheath?
Thanks in advance for your replies.

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[Bruce Bump]

Judge, I wouldnt think of useing a kydex sheath with a polished blade. Even a new kydex or concealex sheath rubs a blade and will stratch it soon especially when dirty. Stainless with bead blasted finish is the normal combination. The kydex/concealex sheaths are made for a using knife and will wear together no matter what. Blade-tech suggests cleaning with soap and water blowing with compressed air and lubricating with WD-40. Polish with plexi-glas cleaner/polish.
Bruce

 

[Rick Leeson]

This helps some. Leave the tip of the case open so dirt can fall through case and not collect in the bottom.

BlacksmithRick