Search:

Type: Posts; User: Mike Blue; Keyword(s):

Search: Search took 0.01 seconds.

  1. Replies
    7
    Views
    377

    For your consideration: ...

    For your consideration: http://www.varusteleka.com/en/product/finnish-sissipuukko/11824

    Designed by a soldier for soldiers.
  2. Replies
    32
    Views
    773

    Human beings are warm blooded for a good reason. ...

    Human beings are warm blooded for a good reason. Our internal metabolism requires some heat to operate at increased efficiency and protect us from the overgrowth of bacteria. It allows us to...
  3. Replies
    32
    Views
    773

    Folks, you've had a very recent example: ...

    Folks, you've had a very recent example: Hurricane Katrina.

    The thin veneer of civilization lasted all of what...thirty minutes? Panic is an infectious disease and it will run through the herd...
  4. Eutectic plain old carbon steels. Because...

    Eutectic plain old carbon steels. Because running off after unobtainium and wunderstahls or steel-du-jour has left any number of perfectly good steels ignored. Especially because they all rust.
    L6...
  5. Replies
    1
    Views
    195

    The National Sword Museum in Tokyo if you have a...

    The National Sword Museum in Tokyo if you have a chance or appreciate long blades and associated art work in the fittings.
  6. Hollywood doesn't have a budget constraint on the...

    Hollywood doesn't have a budget constraint on the construction of a single space craft or partial technology that would bankrupt NASA in a week (or before it even rose above the proposal for...
  7. Replies
    17
    Views
    1,401

    Cruwear will oxidize, i.e. rust. The grind lines...

    Cruwear will oxidize, i.e. rust. The grind lines are consistent through areas of lighter color and darker. Often oxidation will take a darker color when oiled or wet. What oxidizing agent (water...
  8. Replies
    73
    Views
    3,784

    Demoncase makes an excellent point about failure...

    Demoncase makes an excellent point about failure analysis.

    Spyderco is a first class company who will do right by the customer given no warranty conditions preclude that. I talked to Sal about...
  9. Replies
    41
    Views
    1,735

    I learned the hard way about hollow grinds on a...

    I learned the hard way about hollow grinds on a trip to Finland. This was some years of experience making blades too. I could not keep up in a carving contest at a bar we were visiting. It could...
  10. Replies
    73
    Views
    3,784

    The fracture site on that blade is the most...

    The fracture site on that blade is the most logical place for one to occur. The plunge cuts to the edge are notorious spots for stress risers (any sharp cornered surface, even a big 60 grit scratch...
  11. Replies
    102
    Views
    10,003

    Cliff: there are some metallurgical samplings of...

    Cliff: there are some metallurgical samplings of old (Koto era) Japanese swords that are upwards of 9% titanium. Because of it's efficiency as a deoxidizer during smelting it is surprising to see...
  12. Replies
    102
    Views
    10,003

    The short answer is yes. Titanium is a great...

    The short answer is yes. Titanium is a great carbide former and does pretty much what vanadium does, pins the carbides etc. Right next to vanadium on the periodic table. It tends to not stay in...
  13. Daryl Meier did weld up some laminates with...

    Daryl Meier did weld up some laminates with industrial diamonds. The results were interesting but impractical. At some point the metallurgical engineers will develop a blade material very much like...
  14. Yes, there are some Koto era Japanese blades that...

    Yes, there are some Koto era Japanese blades that are high in titanium that was tracked back to an ore source local to one of the smelters that is no longer in operation. The wootz blades, so well...
  15. I don't think so. Human beings are pretty...

    I don't think so. Human beings are pretty creative once they realize that something cool has occurred. Probably like the invention of gunpowder...."BOOM.

    No kidding Sal, THAT was cool...let's...
  16. Yes, but... Once the bar of material is above...

    Yes, but...

    Once the bar of material is above the critical temperature for the steel/irons involved (usually somewhere above 1200F for simple materials) carbon diffuses. At welding heat, 2350F,...
  17. Sal, Another perhaps more practical and...

    Sal, Another perhaps more practical and economical reason was that steel compared to iron was much more valuable to the smith. The first laminates were strips along the edges of an iron bar,...
  18. Replies
    6
    Views
    674

    Stainless steels should properly be called stain...

    Stainless steels should properly be called stain resistant steels. All steels oxidize to a greater or lesser degree with carbon steels being more known for the oxides that we all see as rust. Even...
  19. Replies
    5
    Views
    481

    Keep your cost down if this is an uncertain...

    Keep your cost down if this is an uncertain future. A good quality cheap razor will shave hair as well as an expensive one. Make sure that the razor is honed to "shave ready" status, preferably by...
  20. Replies
    7
    Views
    574

    straightrazorplace.com is a good resource for the...

    straightrazorplace.com is a good resource for the information you want.

    Even though you have a flat spacer, the tension should be greater as you reach the open 90 degree position. That sounds...
  21. Replies
    7
    Views
    574

    Thinner toward the end of the handle away from...

    Thinner toward the end of the handle away from the pivot is correct. This creates slight outward tension on the scales. The correct tapers on the tang of the razor then increase the tension as the...
  22. Replies
    7
    Views
    574

    Nice finish, but the spacer at the opposite end...

    Nice finish, but the spacer at the opposite end of the scales should have been wedge shaped not flat. Straight razors are assembled with tension on the scales to stiffen the blade opening and...
  23. Replies
    42
    Views
    1,482

    Gentlemen, Governments have been in the sugar...

    Gentlemen,

    Governments have been in the sugar business since the 1700's when Napoleon and the UK fought wars over the cane crops in the West Indies. The UK made molasses to make rhum to pacify...
  24. Replies
    22
    Views
    1,509

    Thanks Sal, it's good to walk in such company. ...

    Thanks Sal, it's good to walk in such company.

    You're correct about H1 of course. I completely forgot to include work hardening materials in my list but it is still on the list of alternatives. ...
  25. Replies
    22
    Views
    1,509

    Hello Sal, If you refer to differential...

    Hello Sal,

    If you refer to differential forging or edge packing, maybe even friction forging, then perhaps. Such methods create a mechanical form of grain reduction where the then hardened edge...
Results 1 to 25 of 25