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  1. Jeff on June 24, 2010 at 9:27 pm

    What is the best technique to prevent slugs from hanging onto extrusions when it is necessary to pierce/extrude with the same punch? .033 Galvanized material….118 I.D. extrusion…thank you

    Reply
  2. wisetool on June 24, 2010 at 10:15 pm

    Hi Jeff,

    Thanks for writing; there are a few options to resolve this problem.

    1. Design a spring loaded piercing die insert inside the extrude hole. Hole will be pierced first before the extrusion takes place.

    2. Grind a “v” shape at the tip of the pierce / extrude punch. Please take note; the ‘v’ cut will form a small “leg” at each side of the extruded hole. The total extruded height will be higher with the two extra ‘legs’.

    3. To completely prevent the slug been follows to the extrusion, the better way is still pre-pierce the hole.

    Reply
  3. Jeff on June 25, 2010 at 12:00 am

    Thank you very much

    Reply
  4. Luigi Fulk on September 29, 2010 at 11:20 am

    Only 50% the post is showing, weird, is this my online browser or the website?

    Reply
    • wisetool on September 30, 2010 at 8:33 pm

      I did not see the problem here, perhaps I will need to feed back the info to the hosting company see what can they do.
      Thanks for the feed back.

      Reply
  5. kenny on October 24, 2010 at 12:12 pm

    It’s posts like this that keep me coming back and checking this site regularly, thanks for the info!

    Reply

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