Page 1 of 2 12 LastLast
Results 1 to 10 of 12
Like Tree18Likes

Thread: Grind fabrication question

  1. #1
    Senior Member Bamasamson's Avatar
    Join Date
    Nov 2013
    Location
    Chesapeake, VA
    Posts
    159
    Thanked: 10

    Default Grind fabrication question

    This question goes out to most of you custom fabrication guys. What to you find that you use the most to create the grind in your razors?

  2. #2
    Senior Member blabbermouth spazola's Avatar
    Join Date
    Dec 2006
    Location
    Burkburnett TX
    Posts
    2,376
    Thanked: 1927

    Default

    I use a 2 x 72 belt grinder with a 4 or 8 inch wheel the majority of the time.

    Charlie

  3. #3
    Admin & Forum fixer Bruno's Avatar
    Join Date
    Nov 2006
    Location
    Belgium
    Posts
    13,857
    Thanked: 4069
    Blog Entries
    9

    Default

    Ditto for me.
    walleyeman likes this.
    Happiness is a field, littered with the mangled corpses of your enemies. - Vlad III of Wallachia

  4. #4
    Senior Member Bamasamson's Avatar
    Join Date
    Nov 2013
    Location
    Chesapeake, VA
    Posts
    159
    Thanked: 10

    Default

    Really? I have used similar grinders for the very few knifes I have made but would have thought that getting a hollow grind with something like that would be impossible. Maybe I was using a different belt grinder than you guys. What do you use? How do you get around the heat build up and messing up the temper when working with such thin blades? Trust me I know knives and razors are two different ball games and I just want to learn how to work at that level.

  5. #5
    Senior Member blabbermouth spazola's Avatar
    Join Date
    Dec 2006
    Location
    Burkburnett TX
    Posts
    2,376
    Thanked: 1927

    Default

    I use fresh belts, slow belt speed. and light pressure. Using fresh belts is really important to getting good grinds and cutting down on heat.

    Here is a video showing how I grind.

    Razor Making Overview, From Start To Shaving - YouTube

    Charlie

  6. The Following 3 Users Say Thank You to spazola For This Useful Post:

    JoeLowett (11-13-2013), MuskieMan33 (12-12-2013), walleyeman (11-13-2013)

  7. #6
    Always Thinkun walleyeman's Avatar
    Join Date
    Nov 2012
    Location
    Grain Valley, Missouri
    Posts
    811
    Thanked: 348

    Default

    I fully agree with Charlie! Slow works well, better control, lower heat build up! More is not better in some things and that would be belt speed here. He "Charlie" is the man here. I has done more blades than you can shake a stick at. Trust him. Yes fresh belts do not create the heat that a used belt does. I can vouch for that for sure!!

    Ray
    skipnord likes this.

  8. #7
    Senior Member Bamasamson's Avatar
    Join Date
    Nov 2013
    Location
    Chesapeake, VA
    Posts
    159
    Thanked: 10

    Default

    Hey y'all thanks a lot for everything! Especially you Charlie! I really enjoyed the video and learned quite a bit. I will keep it around and study it some more.

  9. #8
    Admin & Forum fixer Bruno's Avatar
    Join Date
    Nov 2006
    Location
    Belgium
    Posts
    13,857
    Thanked: 4069
    Blog Entries
    9

    Default

    And lots of dunking in cold water. Grind a couple of seconds, dunk. Grind a couple of seconds, dunk. Etc...
    Near the spine or the tang you have a bit more margin, but near the edge you gotta dunk every couple of seconds.
    Otherwise you'll see blue flowers blossom on the blade.

    Sharp belts, low speed, lots of patience, and lots of dunking.
    Especially with high grit belts. They cause more heat buildup than low grit belts.
    spazola and walleyeman like this.
    Happiness is a field, littered with the mangled corpses of your enemies. - Vlad III of Wallachia

  10. #9
    Senior Member Bamasamson's Avatar
    Join Date
    Nov 2013
    Location
    Chesapeake, VA
    Posts
    159
    Thanked: 10

    Default

    Yeh Bruno that was always my question with heat build up. Thanks for addressing that.
    Justin

    I would rather be outdoors!!!

  11. #10
    Admin & Forum fixer Bruno's Avatar
    Join Date
    Nov 2006
    Location
    Belgium
    Posts
    13,857
    Thanked: 4069
    Blog Entries
    9

    Default

    This is also the main reason why you don't grind an 8" diameter hollow with an 8" diameter wheel. You'll create an enormous surface area that is in touch with the belt, leading to extremely fast heat buildup. Instead, you 'wobble' the blade a bit form edge to spine. That way, there is only a small contact surface. This will reduce the heat buildup because a) the surface is smaller, and b) more material will be removed, meaning the heat gets dissipated partially by shedding the material that had heated up.

    Again, near the spine and tang you have some more margin because they act as a heatsink. and even if you overheat locally, it really doesn't matter. But if you grind a surface that fits tightly to the wheel, the edge will flash blue before you know what is happening.
    Happiness is a field, littered with the mangled corpses of your enemies. - Vlad III of Wallachia

  12. The Following User Says Thank You to Bruno For This Useful Post:

    gregg71 (02-06-2015)

Page 1 of 2 12 LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •