Exactly how high are the tolerances on CRK?

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Valmak

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Everybody always talks about how CRKs have very high tolerances. Does anybody know exactly how high the tolerances are? For example, are the tolerances within +- .001 inches or what?
 
Depends on what part you are talking about, but generally speaking...well within .001in for most parts.
 
Killing time on Knifeart and i came across this:

"To say Chris Reeve is a perfectionist is an understatement. Any criticism he receives, might be the level of tolerances his knives are held to. Surface grinding his blades, handles, and other components to tolerances within 1/10th of 1000th of an inch on the Sebenza 21 alone, many would consider it overkill for a folding knife. This allows for no play in the blade in side to side motion whatsoever. This knife is held to requirements by the maker and manufacturer which rival the aerospace industry, setting it lightyears apart from competitors"
 
mt666tm said:
Killing time on Knifeart and i came across this:

"To say Chris Reeve is a perfectionist is an understatement. Any criticism he receives, might be the level of tolerances his knives are held to. Surface grinding his blades, handles, and other components to tolerances within 1/10th of 1000th of an inch on the Sebenza 21 alone, many would consider it overkill for a folding knife. This allows for no play in the blade in side to side motion whatsoever. This knife is held to requirements by the maker and manufacturer which rival the aerospace industry, setting it lightyears apart from competitors"
Click to expand...

Ok so the handle on the small Sebenza 21 is supposed to be 3.935" long. So in reality they are between 3.9349" and 3.9351" long.
 
Valmak said:
Ok so the handle on the small Sebenza 21 is supposed to be 3.935" long. So in reality they are between 3.9349" and 3.9351" long.
Click to expand...

Not necessarily-
The handle length isn't functional to the extent it has to be that tight, so I would expect that to have an industry standard of +-.005in
Mostly, when it's dialed in,...they are much closer to a nominal dimension..but really would not expect reputability from batch-to-batch to be within +-.0001
 
Valmak said:
Ok so the handle on the small Sebenza 21 is supposed to be 3.935" long. So in reality they are between 3.9349" and 3.9351" long.
Click to expand...

I'm curious, where are you getting your information from ?
 
The phosphorus bronze washers aren't held to this tolerance and they to a large extent dictate the blade play.
 
Wanimator said:
The phosphorus bronze washers aren't held to this tolerance and they to a large extent dictate the blade play.
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In the old "clean a sebenza" thread, I believe Chris said to not polish the washers because you can ruin the hand fitting of the blade/handle by removing too much metal. So washers are one of the parts that need to be hand fitted to get that sebenza action.
 
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On the recent Facebook Live thing Tim did I remember him talking about flatness tolerances of the handles being ridiculous, like in the 10,000ths maybe even tighter. I wanna say in the 100,000ths but that seems crazy!

Edit: I think it was Ryan filming?
 
kniferbro said:
On the recent Facebook Live thing Tim did I remember him talking about flatness tolerances of the handles being ridiculous, like in the 10,000ths maybe even tighter. I wanna say in the 100,000ths but that seems crazy!

Edit: I think it was Ryan filming?
Click to expand...

RyanRaben RyanRaben and myself

that would be around .0001in flatness. I believe the tolerance has a bit more room than that, like .0005 but the majority are much flatter.
 
Yep, not sure if it was Apple or AT&T that didn't agree with all the machinery around while filming. LOL. Only made it a partial way through and bhyde bhyde and his fancy Verizon and his Android device came in to save the day. ROFL :) I am an Apple fanboy so I was kinda bummed my awesome phone could not keep up. LOL all in good fun though.
 
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