Spalling Edwards Chert 2.wmv

Loading...

Sign in or sign up now!
Alert icon
Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info.
3,050
Loading...
Alert icon
Sign in or sign up now!
Alert icon

Uploaded by on Jan 15, 2010

Spalling a basketball-sized chunk of Edwards Plateau chert into large flakes with a big copper billet. Shows spalling technique and tips. Filmed by my wife and assisted by Ramsay, the Golden Retriever.

  • likes, 0 dislikes

Link to this comment:

Share to:

Uploader Comments (BenHenry1957)

  • Yeah T Caveman, I caught that after the fact but then I figured people would be able to "mean what I know." If you haven't got a rock saw and you have to spall, it's good to know how to conserve your rock the best.

  • That would be a fairly large chunk for Edwards Chert. This stuff came from a housing development in San Antonio. I think there were plenty of big pieces there, but as a whole, I haven't seen many "Texas" rocks that size. I'd sure like to go back there.....

  • Great video Thanks!. About how much would you say your spalling hammer weighs? Does a heavier billet and a slower speed = less definded bulbs of percussion?

  • I would say the hammer weighs about five pounds. I think you are probably right about bulb of percussion (B.P.) size vs weight and speed, but I am not sure. I know a soft hammerstone produces a smaller B.P. than a hard hammerstone.

see all

All Comments (15)

Sign In or Sign Up now to post a comment!
  • Really nice work!

  • Enjoyed your video. I've watched all the spalling videos on youtube and you are the best I've seen....I'm waiting for your heat treating video...Thanks, Darrell

  • Loved the intro to spalling! You make it look easy.

  • @greennova1 - Nope, I live in Arkansas. I wish I was closer to that area so I could collect rock.

  • Do you live in the San Antonio area?

  • wow great video!! ummm at one point you said convexity, convexity is when it's round and bulges on the outside, concavity is when it dips in. i guess for next time..... thanks again man!! there aren't very many videos on spalling.

  • very nice spalls, Does edwards chert come in that size often?

  • Great spalling. right tool for the job.

Loading...

Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more