Names for common grinding errors?

[averageguy]

Are there names for common grinding errors? For example a blade where the primary grind has been more deeply ground on one side and more shallow ground on the other - leaving the edge slightly off center. And, often related, the plunge line extending past the spine - so to speak - rather than ending at or slightly below the spine resulting in an effectively thinner spine than the stock from which it is ground.
Names and descriptions of other errors?

 

[Mike Hull]

Originally posted by averageguy
Are there names for common grinding errors? For example a blade where the primary grind has been more deeply ground on one side and more shallow ground on the other - leaving the edge slightly off center.

I call that error 'scrap'.

 

[Bruce Bump]

I call it CHIT, DAMMITT, CRAPP,

 

[peter nap]

ground on one side and more shallow ground on the other

I call that a right (or left) handed knife.


rather than ending at or slightly below the spine resulting in an effectively thinner spine than the stock from which it is ground.

A special purpose blade.

 

[Sylvester]

I call them @#$%$%^%$#@#$%%^@@#$#$$#@$%% :grumpy: :grumpy:

 

[rlinger]

A shop blade that nobody else is allowed to see.

 

[indian george]

Frontier Damascus Material

 

[Belstain]

destructive testing
shop knife
loaner knife
smaller knife

 

[Bill Siegle]

Doesn't Spark have rules against saying those words here Seriously though, I'd say terms like uneven,off center, and too high/low are some common terms most makers understand. I use "digs" when a belt digs in on a grind because I've ridden the edge of the platen too much.

 

[bryce]

I call both of those my best work ever

 

[blade runner]

Some guys would say that the f**k-up fairy has visited your shop
It happens all the time.

 

[rlinger]

Never mind.

 

[RHINOKNIVES]

i don't have any idea what you guys are referring too? none of that stuff has ever happened to me!

 

[Bill Siegle]

Knifemakers don't make mistakes. They make smaller knives

 

[MaxTheKnife]

Well, I call the ones where one grind is deeper on one side than the other 'another trip to the grinder'. And the one where the grind goes through the spine a 'blowout'. On the other hand, the extra grinding caused by a blowout can be referred to as 'a well tapered blade'. He he. If I blow out one side I go ahead and blow out the other just to keep it balanced. And when a double blowout happens I normally lay the knife down on my workbench and back slowly out of the shop and do a dissapearing act for a while. None of that happens very often but I'm sure we all have those days where our time would be better spent weeding the garden or working on a shotrod in the yard.

 

[Laredo7mm]

I call them Christmas Gifts

 

[John Andrews]

I call them inlaw bait.

 

[Gabe Newell]

Call them "rustic finish" and charge extra.

 

[RARanney]

Unacceptable.

 

[c.m. arrington]

"SON OF A ........shop knife."