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Possible to use a Work Sh...
Forum: Relevant General Discussion
Last Post: Mark Reich
10-15-2019, 01:04 PM
» Replies: 7
» Views: 396
The straight razor that c...
Forum: All About Edges
Last Post: Mark Reich
10-14-2019, 03:59 PM
» Replies: 41
» Views: 3,969
Windmill Riddle
Forum: Relevant General Discussion
Last Post: Mark Reich
10-14-2019, 03:09 PM
» Replies: 7
» Views: 86
Burl - but not Ives
Forum: Woodworking Tools
Last Post: Mike Brubacher
10-14-2019, 02:45 PM
» Replies: 4
» Views: 74
Your favorite de-greaser
Forum: Relevant General Discussion
Last Post: Mark Reich
10-14-2019, 09:15 AM
» Replies: 8
» Views: 162
Saw chain sharpening
Forum: Woodworking Tools
Last Post: Jan
10-06-2019, 07:00 AM
» Replies: 4
» Views: 73
Soaring Tomahawk
Forum: Knife Making & Bladesmithing
Last Post: Mike Brubacher
10-03-2019, 08:50 AM
» Replies: 12
» Views: 167
Why the 40° edge will not...
Forum: Edge Sharpness Testing
Last Post: SteveG
09-16-2019, 09:44 AM
» Replies: 28
» Views: 1,091
Driving to work
Forum: Relevant General Discussion
Last Post: Mark Reich
09-07-2019, 03:15 PM
» Replies: 3
» Views: 260
Post Holiday Greetings
Forum: BESS
Last Post: grepper
09-03-2019, 02:41 PM
» Replies: 1
» Views: 156

 
  Windmill Riddle
Posted by: Mike Brubacher - 10-08-2019, 02:28 PM - Forum: Relevant General Discussion - Replies (7)

So here was a head scratcher for me. The following came off of a windmill I was restoring. The old platform, from which the windmill head was serviced, was long ago shot being constructed of 1" thick pine boards nailed to angle iron. Here's a picture of the replacement platform:

                                                    

The riddle concerns the original construction - nails were driven through holes in the angle iron and then through the 1" board - then clenched. The nails were old square nails. So how do you clinch a nail like this?

                                                    

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  Burl - but not Ives
Posted by: Mike Brubacher - 10-07-2019, 06:27 PM - Forum: Woodworking Tools - Replies (4)

If you're old enough to appreciate the attempt at word play that is represented in the title of this thread then you, like me, probably sport a few gray hairs on your noggin. 

When I first discovered the growths on the trunk of my majestic American Elm, I didn't know what they were. A year later the 50 foot tall massive old elm was clearly suffering and the following year it had expired.  We cut the tree about 12 feet up from the ground to keep the dead branches from crushing the adjacent shed. 

                                              



I also trimmed one of the bumps off the trunk with my chain saw and took note of the strange grain at the saw line. That's when someone more familiar with wood than me told me that "that's burl". 

That's when I decided to turn the trimmed piece into a serving platter.

                                              


And here is a closer look at the grain:

                                               

Pleased with the results, I lopped off several more growths of various size and shape and produced various bowls and serving pieces from them.  This was all three years ago. The event that prompted this post occurred when I inspected my old burl trunk this year. I discovered that the old trunk has gone back into burl production again  and some of the new growths are quite massive:

                                               

Anyhow, seems like this stuff would make some pretty nice tool and knife handles as well.

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  Saw chain sharpening
Posted by: Jan - 10-05-2019, 10:36 AM - Forum: Woodworking Tools - Replies (4)

Recently I purchased an electric chain saw and would like to ask you if you have some recommendations concerning chain sharpening.

For the time being I have Oregon sharpener file kit, but I have read that there exists Granberg Bar-Mount Chain Saw Sharpener made in California. Amazon delivers it to Europe, shipping’s and import fees are some 20 USD, so the total price for me would be some 55 USD.

Company Stihl offers similar device, but the price is several times higher.

Jan

Amazon link:
https://www.amazon.com/Granberg-Bar-Moun...QC672JJQSJ

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  Soaring Tomahawk
Posted by: Mike Brubacher - 09-29-2019, 09:27 AM - Forum: Knife Making & Bladesmithing - Replies (12)

Well Mark R. I told you that I was going to take a few of your throwing tomahawks to Kansas for a good workout.  I presented two of them to my nephews here,  Josh and Jake,  with tomahawks and they went right to work. These are really nice creations Mark and extremely well made! They got the Tomahawks and I kept the ax. Here's a picture of both styles for the member's edification:


                   


Apparently they lack only one feature Mark - altitude control. I received this picture from Josh with the message "OOPs" along with it:

                                                 

When I was a kid Mark, I flung every hatchet I could find at every tree on the place and spent hours and hours doing it. These axes and tomahawks are four or five leagues above those old projectiles. I understand that there is now a resurgence of tomahawk and ax throwing going on and it's easy to see why. It's just a ton of cheap fun!

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  Your favorite de-greaser
Posted by: wadebevan - 09-28-2019, 04:42 PM - Forum: Relevant General Discussion - Replies (8)

Hey guys, 
Summer is pretty much said and done around here these days.
And it is time to get back to the shop, but first, I have a ton of cleaning to do.

Just wondering what everyone's favorite de-greaser is for metal machines?
I sort of ended up with an extra Bridgeport mill, WF Wells horiz band saw and a Cincinnati lathe.

They need a good scrub, and I want to cut as much as that swarf as I can chemically before getting to the manual scrubbing.
Any thoughts?
Thanks,
Wade.

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  Driving to work
Posted by: Mike Brubacher - 09-05-2019, 10:23 AM - Forum: Relevant General Discussion - Replies (3)

I think that every street in Phoenix must be under construction right now. I take about six miles of the 101 freeway to and from work every day and they are in the process, this summer,  of turning 8 lanes into twelve there.  The key to living successfully with the 101 each day is to make certain that you're traveling the right direction at the right time of day. It's west in the morning and east in the afternoon for me. Things flow pretty smoothly if the relationship of your home to your office allows this and I'm one of the lucky ones that it does. 

Anyway - this is all just background for something that happened this morning. Due to the construction, the speed limit is now reduced to 55 mph. Phoenix drivers have always been eager to make the conversion to metric so mentally convert all posted speed limits to kilometers per hour while still using the miles per hour arc of their speedometers. A Corvette sailed past me this morning at nearly twice my speed. Force of habit caused me to mutter the word "Idiot". Not thirty seconds later I'm standing on the brake because a mini-van  up  front  is doing half my speed (clearly a newcomer to town). I began to mutter a descriptive term for his driving habits as well but caught myself before I did. I had begun to mutter "Moron" but then remembered the "Idiot". Logically, if the guy doing twice my speed was an idiot then why isn't the guy doing half my speed  a "Genius"? I didn't resolve all this until I pulled into the parking lot here at work and here's how I arrived at the correct answer:

If the fast driver was an idiot and the slow driver was a genius then that would make me a "C" student and we have no C students on the BESS Exchange. Only the best and brightest express themselves here on these pages. So, therefore, idiot and moron must be the correct terms. Now, please don't ask me what lies at the midpoint between moron and idiot. I'm still working on that part of the equation.

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  Post Holiday Greetings
Posted by: EOU - 09-03-2019, 10:06 AM - Forum: BESS - Replies (1)

We had a meeting of the BESSU board this weekend and they asked us to pass along this message:

"Hope everyone had an enjoyable and safe holiday weekend and thank you for your support of BESS and the BESS Exchange!"

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  Why the 40° edge will not score as well as the 20°
Posted by: KnifeGrinders - 08-25-2019, 06:22 PM - Forum: Edge Sharpness Testing - Replies (28)

Differentiation between keenness and sharpness has been best done by Todd Simpson:
Keenness is measured at the very apex of the edge, while Sharpness is determined by thinness of the edge behind the apex, and depends on the edge angle.
https://scienceofsharp.wordpress.com/201...-and-keen/
https://scienceofsharp.wordpress.com/201...en-part-2/

The BESS test line is severed in the test by combination of a cut and tear.
The test line is about 200 micron in diameter; to cut it the edge has to go through at least a quarter of that, i.e. at least 50 micron, where the tear starts developing, and the test line eventually gets severed.
Owing to this, the BESS score that we see on the instrument reflects both the keenness and sharpness of the edge.

We know by experience that a higher angle edge, e.g. 40 degrees included, scores worse on the BESS Edge Sharpness Tester than a lower edge angle, e.g. 20 degrees included, even when the edge apex in both splits hair, i.e. the keenness is the same. This difference in the BESS score is due to the "sharpness" component of the testing.

There are 3 testers in the world that quantify sharpness: the US BESS Edge Sharpness Tester for $179-259, the New Zealand Anago for approx. $20,000, and the UK CATRA for approx. $50,000 - 80,000. For a small-scale sharpener the BESS Edge Sharpness Tester is the only feasible. Only a few of the larger knife making factories use the CATRA testing, while the Anago is used by some makers of the industrial knife sharpening equipment.

Of all 3, only the BESS Edge Sharpness Tester tests both the keenness and sharpness, and can tell about sharpness in the razor range.

CATRA can not be used to evaluate the edge sharpness, because the edge is abraded beyond shaving sharp in its 1st cycle, the edge gets practically dull by the 4th cycle (can't cut print paper), and the full test includes 60 cycles. CATRA best evaluates role of the blade geometry and the steel wear resistance in the cutting ability.
The NZ Anago evaluates the edge sharpness, but not the keenness.

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  Amazing new way to sharpen a knife
Posted by: grepper - 08-18-2019, 09:40 PM - Forum: All About Edges - Replies (7)

Please forgive me, but when I saw this rare nugget of knife sharpening wisdom I couldn't help but share.

https:/ /www.youtube.com/watch?v=SJMphMQ3pYc

Now, I applaud the following dude for his skepticism and willingness to perform testing to verify Internet wisdom.  If he had only been an Exchange member we could have saved him from wasting his precious life minutes in the testing.

https://www.youtube.com/watch?v=2vvMFOUkwC0

Life lesson:

Always believe everything you read from knife sharpening gurus on the 'Net.  And... join the Exchange. Smile

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  Toothy edge - Scotch brite belt(1)
Posted by: SHARPCO - 08-12-2019, 07:13 PM - Forum: Burr Removal Methods, Testing and Results - Replies (7)

I used worn Blaze 120 grit(about 15 degree), and Super fine scotch brite belt.(higher degree) 

   

   

Center sharpness: 197, 301, 209 BESS.(Average is 236 BESS)

Fail

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