Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Tricking the BESS Tester (without meaning to)
#1
I just did some more work on my (now world) famous Tramontina kitchen knife.  The one that scored about 190-ish after very careful deburring, following a 380 grit belt.  Well I decided to polish it a bit so I used a 600 grit belt, then leather, scotchbrite, leather again.  Terrible scores!  200, 350...  So more polish.  I went straight to a smooth leather belt with green compound.  Very little compound left on the belt, but it's there.  Eliminated the remaining LOW.  ...and it scored 125, 125, 175.  The 175 was in the curve.  So back to the loaded leather.  I did 5 or 6 passes and got a little too casual with my motions.  Sliced open the top of my index finger.  Ooops.  Nice *cleeeeeean* cut though.  It didn't even bleed for 20 or 30 seconds.

After cleaning that up, I tested the curve again.   One handed, because I was holding pressure against the finger of one hand.  Balanced the blade on the fulcrum on the tester, and leaned it over to the media.  Lean, lean, lean, lean... and the media broke.  At 80 grams.  No freaking way.  I must have sliced it somehow.

So I went and got a bandaid and got my finger taken care of.  ...and tested again.  In the curve with the fulcrum, but this time with the other hand on the tip of the blade helping to guide it down.  ...and it read 135.  Now that's more believable.

I can only guess that with one hand the blade slips some and creates a slicing motion, which obviously "tricks" the tester because the force is not straight into the media, it's at an angle.  I think if you were really clever you could slide the blade sideways and get nearly zero readings by doing an extreme version of this.  Does that sound about right?

Anyway, seems like I need to be more careful when sharpening knives.  Smile

Brian.
Reply
#2
Nice! I love it when knives bite their owners... LOL (I have 16 stitches on one hand... The knife was plenty hungry)
Reply
#3
" I love it when knives bite their owners." That one made me laugh Chino - good job. Perhaps Brian should think about having that knife put down.
Reply
#4
(03-25-2020, 01:59 PM)Mike Brubacher Wrote: " I love it when knives bite their owners." That one made me laugh Chino - good job. Perhaps Brian should think about having that knife put down.

Nah, as long as rabies aren’t in the equation it’s just fine... Big Grin
Reply
#5
"Sliced open the top of my index finger.  Ooops."

I just hate it when that happens.  It never seems to work to try and control the epidermal leakage and keep working.  Always have to give in and go deal with it.  No doubt you will find that you use that one spot on your finger about 1,000 times a day.

"LOL (I have 16 stitches on one hand... The knife was plenty hungry)"

Yikes!  I just really, really, really hate it when that happens!
Reply
#6
Yeah the ER nurse (almost) gasped when I took the paper towels off.

Ok, sorry about derailing this thread.

I watched the latest video on paper cutting and enjoyed it.
Reply


Forum Jump:


Users browsing this thread: 2 Guest(s)