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Cutting rolls of heat treat foil

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by JTknives, Jul 27, 2019.

  1. JTknives

    JTknives Blade Heat Treating www.jarodtodd.com Knifemaker / Craftsman / Service Provider

    Jun 11, 2006
    How is everyone cutting down your heat treat foil. We have come across a problem and that is cutting up foil. With the number of knives we get it has become a problem. Yes we gas shield but not often. It’s good for large batches of the same alloy but we see lots of small individual batches of different alloys. So foil is our go to for shielding. We order our rolls 24” wide as that’s the cheapest way. But even after building a shear to cut it straight off the roll it’s still taking to long. So we are wanting to shear it on the roll to 6” wide individual rolls. I was given a narrow roll of foil years ago and it’s the bees knees. So nice to just pull out the length you need and cut it off. Very little if any waste this way. When using 24” rolls you have waste as your always cutting off a 24” long strip.

    So this brings us to the question at hand. Does anyone know of a place that sells narrow rolls or will cut rolls down. I’m going to try slitting it on the lathe using a rolling blade like a pizza cutter. Just turn the roll and push the blade into it. I don’t know how well it will work but anything is better then what we are doing now. I found rolls that are 10” wide but that’s way to wide for our uses. Any other ideas?
     
  2. Lieblad

    Lieblad

    Jul 24, 2015
    Sounds good to me.
    A rolling bladewheel is how most roll products are cut.
    Excepting toilet paper/towels. Those are cut with round knife fixtured like a chopsaw.
    The roll just needs to be on a strong and snug fitting mandrel.
     
  3. Cushing H.

    Cushing H. Gold Member Gold Member

    427
    Jun 3, 2019
    Is it worth at least trying a bandsaw? Wont be a pretty edge, but i dont think that matters at all, right?
     
  4. DevinT

    DevinT KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Jan 29, 2010
    Try Brown Metals in so Cal, they will slit to any width. For best pricing you might need to buy 100# though. They sell 321 and 304, not sure if they have 309. Get the .002 321 annealed.

    Hoss
     
  5. 12345678910

    12345678910

    Jul 13, 2009
    Premade three side closed envelopes
     
  6. DevinT

    DevinT KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Jan 29, 2010
    Who sells them?

    Hoss
     
  7. JTknives

    JTknives Blade Heat Treating www.jarodtodd.com Knifemaker / Craftsman / Service Provider

    Jun 11, 2006
    I think Tracy sells them
     
  8. DevinT

    DevinT KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Jan 29, 2010
    Who's Tracy?

    Hoss
     
    argel55 likes this.
  9. Ken H>

    Ken H>

    Dec 31, 2011
  10. DevinT

    DevinT KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Jan 29, 2010
    Oooh, pricey.

    Hoss
     
  11. Randydb

    Randydb Basic Member Basic Member

    698
    Sep 27, 2014
    When I want to cut without tearing on carbon fibre arrows I either cut with an abrasive wheel with my rotary tool or else put a fairly fine toothed blade onto my chop saw backwards. The backward blade still cuts but without tearing. Never thought of trying to cut foil, but this might work here too.
     
  12. JTknives

    JTknives Blade Heat Treating www.jarodtodd.com Knifemaker / Craftsman / Service Provider

    Jun 11, 2006
    And don’t think I haven’t thought about rolling it out on the cnc plasma and cutting out pouches. Lol
     
    Tin.Man likes this.
  13. Stacy E. Apelt - Bladesmith

    Stacy E. Apelt - Bladesmith ilmarinen - MODERATOR Moderator Knifemaker / Craftsman / Service Provider

    Aug 20, 2004
    I would try this:
    Tightly wrap the places to be cut on the roll in several layers of 3" masking tape. Feed slowly into the bandsaw.
     
    slamosam likes this.
  14. Randydb

    Randydb Basic Member Basic Member

    698
    Sep 27, 2014
    That is what I would do with my chop saw blade on backwards.
     
  15. JPuri

    JPuri

    65
    Nov 9, 2012
    water jet?
     
  16. Josh Rider

    Josh Rider KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Sep 2, 2014
    I just use trauma shears.
    I bought a set of leatherman raptor shears that work well.
     
  17. Stacy E. Apelt - Bladesmith

    Stacy E. Apelt - Bladesmith ilmarinen - MODERATOR Moderator Knifemaker / Craftsman / Service Provider

    Aug 20, 2004
    He is cutting the entire roll all at one time to make a narrower roll... like slicing a loaf of bread.
     
    Last edited: Jul 29, 2019
  18. Josh Rider

    Josh Rider KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Sep 2, 2014
    I was throwing out an idea that I wasn’t sure if he’d tried.
     
  19. Storm W

    Storm W

    265
    Feb 19, 2019

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