how thin,is to thin??

balibalistic

balibalistic

Joined
Jul 14, 2004
Messages
2,623
Well,that is clearly to thin!

I got a new wheel and was eager to do some grinding with it.i basically made a scalpel ground to zero that will shave a tic ass..,before even touching a stone to it.banged it into the edge of my vise while going to sand the spine and....

A big 'ol dent in the edge! no more zero's for me.:mad:
Ever do this?

scalp.jpg
 
Not really a thin issue, but a similar frustrating incident: I had a real pretty full handled EDC that I finished grinding out of CPM154. It was going to be MY keeper. Finally making one for myself. So after admiring my work, I reached over to place it back on the table, and fumbled it right to the concrete floor. Tip first. Being as it was not heat treated and softer than sissy's bicep, the tip now has a neat-o accordion profile. :grumpy::grumpy:

Gonna have to cut this one down a bit and make a smaller EDC for myself. :(

--nathan
 
Last edited:
I have a 8" kitchen knife that measures .004 behind the edge. It will cleave a dropped grape. The edge is fragile though. A straight razor is also about .004". I make knives down to .010", but .015 to .020 is more moderate. Many production knives are .030-.060.

So, to answer the question, .001 is probably too thin for about anything. :D
 
Not the highest quality, but they should still work. Check out your local Harbor Freight. You can find outside mics for around $20. I don't have any experience with them, but maybe others have. Otherwise, expect to pay around a bill. Also, you could check out ebay.

--nathan
 
Well,i can simply knosh the edge back on it so theres a little something there!! pretty damn frustrating,though.keep the stories coming,makes me feel better :)
 
silver_pilate said:
Check out your local Harbor Freight... Otherwise, expect to pay around a bill. --nathan
Click to expand...

Cool, I was thinking $100 max. I'm not making folders, just want to be able to describe my edges accurately and check evenness.

balibalistic said:
keep the stories coming,makes me feel better :)
Click to expand...

At least with your goof, you can still regrind and be OK. Wait till you get a hidden-tang almost done and grind through the handle material and expose the tang.

The experience did increase my confidence in my handles' durability... I had to cut/grind the thing off. (always try to find the positive :D)
 
My main income is from zero edge chisel ground reed-knives. They are RWL34 and have 22 degree edges. That happens all the time for me so I have 2 models, one model having a smaller width blade than other. I always start to grind model #1 with wider blade, when this happens I end up with the model #2 :o:D..
 
I have flat ground blades to a zero grind without a problem, but the edge is thicker with a flat grind.

Did you grind that on a 3inch wheel?
 
James,i actually cont regind this.it this is almost see through its so thin,i ended up knock the edge back a bit.

Chuck,yep! it was ground on a 3" wheek,swedge on a 2". atleast i know now that i will need to leave my edge much thicker and hollow out the center more.i use to grinding my edge at 90 degrees until its about .020,then i grind my bevels in and keep the blade in the groove through progressing grits,this way i thin out the edge to around .015 - .010". not with these little guys!
 
i do that often (well not the chipping the wedge away)
but for the kitchen buyers i have the thinner and harder the more they like it
and for razors .005 is normal
im with nate tho on all the other knives

also i flat grind my razors to about .010 then hollow them out with a 2 inch wheel blending from spine to edge
 
Never grind or sharpen knives while extremely hungry. :)

while working with a sharp knife I noticed I was getting shaky from being hungry so I go to put the knife down and get something to eat, I fumble the knife and it walks around the backside of my hand and slices me across two of my knuckles.
 
I have a centofante that Krien reground to hairs width it seems. It holds up pretty well for VG-10. I only use it for slicing and never abuse it and it is my favorite edc. I would like to see this thin of a grind on seom zdp-189 or SG2, maybe CPM M-4. mmmmm.....
 
You have sacrificed a lot, to get an edge geometry like that.

The dent speaks volumes and it says: you can't chop wood with a scalpel.

:)Fred
 
I do a lot of scandi grinds to zero. I had that problem last night with a blade. I don't have digital calipers to measure, but I made it a little steeper and stropped it to convex a little. It passed the brass rod test after, but I was worried I'd have to scrap it. I'll need to adjust my primitive jig I use to set the initial angle.

One of the pitfalls of being a newbie, knowing and finding your mistakes yourself. I wasn't sure if I screwed the HT and my blade was too soft or if it was too thin at the edge. Probably a mix of both.

Walter
 
You must log in or register to reply here.
Back
Top