Tormek Community Forum

In the Shop => Knife Sharpening => Topic started by: John_B on March 11, 2019, 10:14:36 PM

Title: Another Way to Assess Sharpness
Post by: John_B on March 11, 2019, 10:14:36 PM
Today I saw a video which demonstrated a new (to me) way of assessing sharpness. He uses the banding from off brand plastic soda bottles. He asserts that the name brands like Coke and Pepsi are a little thicker and easier to cut.

Today I was shopping and I got a bottle of Ginger Ale. I tried cutting the label and I must agree with the statement. In my brief test it was more sensitive to sharpness than magazine paper and newsprint. I keep reminding myself to look for cigarette papers but so far I have forgotten.

If anyone has a Bess tester it would be interesting to know the highest value that will easily cut the label. 
Title: Re: Another Way to Assess Sharpness
Post by: cbwx34 on March 11, 2019, 10:25:03 PM
Quote from: john.jcb on March 11, 2019, 10:14:36 PM
Today I saw a video which demonstrated a new (to me) way of assessing sharpness. He uses the banding from off brand plastic soda bottles. He asserts that the name brands like Coke and Pepsi are a little thicker and easier to cut.

Today I was shopping and I got a bottle of Ginger Ale. I tried cutting the label and I must agree with the statement. In my brief test it was more sensitive to sharpness than magazine paper and newsprint. I keep reminding myself to look for cigarette papers but so far I have forgotten.

If anyone has a Bess tester it would be interesting to know the highest value that will easily cut the label.

Got a link?
Title: Re: Another Way to Assess Sharpness
Post by: John_B on March 11, 2019, 11:07:27 PM


Quote from: cbwx34 on March 11, 2019, 10:25:03 PMGot a link?

Here is the video I saw:

https://www.youtube.com/watch?v=GNuP-IbPi8U
Title: Re: Another Way to Assess Sharpness
Post by: cbwx34 on March 11, 2019, 11:35:14 PM
Quote from: john.jcb on March 11, 2019, 11:07:27 PM


Quote from: cbwx34 on March 11, 2019, 10:25:03 PMGot a link?

Here is the video I saw:

https://www.youtube.com/watch?v=GNuP-IbPi8U

Cool thanks. 

You might be able to compare to some other tests in that knifegrinder's chart (http://knifegrinders.com.au/Manuals/Sharpness_Chart.pdf), to get an idea?

(Wonder how it would compare to cutting something like the thin plastic in grocery store bags)?  ???
Title: Re: Another Way to Assess Sharpness
Post by: Ken S on March 12, 2019, 05:08:42 PM
John,

I watched the video. Interesting idea, just be careful not to injest any of the contents of the bottles.   :)

Here is a testing you tube by our own Steve Bottorff:

https://youtu.be/rzWdpjyDZKM

Ken