[Jewelry making - Article 00142] - Re: [Orchid] Drawing wire, getting burrs

[Trevor F]

========[ Invite a Friend - http://www.ganoksin.com/invite.htm  ]========

>     I have been reading the postings on getting burs on drawn wire. I
>     agree that most problems related to sharp "spurs" or burs in the
>     drawn wire would occur in the rolling mill phase. 

    I hear you Jay, but you need to also consider that the problem of
    drawing burrs can occur in other ways to. As James Miller has said,
    it's an old problem, and they had specific ways of dealing with it
    in the past (hammering down those square edges for instance). 

    I think one of the things that is getting lost in this conversation
    is that I have drawn heaps of wire in the past -- the proper way,
    doing the 90 degree turn and second runs -- and had no problem
    whatsoever. I've done this with gold, sterling silver, Argentium
    sterling, and pure silver so I pretty much know how to anneal
    properly and the various ways to botch up the mill rolling if I
    really wanted to (fins, single passes, incremental steps too big,
    rollers too tight, etc). The key thing in most of my past experience
    is that the point at which I made the transition from mill to
    drawplate: I almost always only did it with fairly small gauges of
    wire, say 1mm or less. 

    My problem occurred, and continues to occur, when I take large wire,
    say 2 or 2.5 mm, out of the mill and run in through the round
    drawplate. Now I get the burrs and I'm convinced it's because the
    process of forcing a large gauge nearly square wire through a round
    hole _will_ roll over those nearly square edges and thus produce
    burrs. 

    Bottom line: it's not a milling problem, it's a drawing problem, at
    least with these large gauge wires. 

Cheers,
Trevor F.
in The City of Light
Visit TouchMetal.com at http://www.touchmetal.com
____________________________________________________________________
T h e   O r c h i d   L i s t
Open Electronic Forum for Jewelry Manufacturing Methods and Procedures
____________________________________________________________________
Orchid FAQ:
~ http://www.ganoksin.com/orchid/faq.htm
Orchid Archives:
~ http://www.ganoksin.com/orchid/archive
Orchid Galleries:
~ http://www.ganoksin.com/orchid/gallery.htm
Invite a Friend:
~ http://www.ganoksin.com/invite.htm
____________________________________________________________________
Tips From The Jeweler's Bench - Article Archive
~ http://www.ganoksin.com/borisat/tip_sear.htm
The Jeweler's Selected Bibliography List
~ http://www.ganoksin.com/jewelry-books
Buy Orchid Jewelry:
~ http://www.ganoksin.com/shop
____________________________________________________________________
-Unsubscribe:
-Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank
____________________________________________________________________