Wire Drawing and Rolling

• Video - rod is pulled through a die, and every pass means smaller diameter. Starts with 9 mm rod? [1]
• Copper - pulled through many dies to very fine size - [2]
• Multiple dies are loaded one at a time, then drawing starts. Are all spools pulling? Likely so, as the thinnest wire pulling would break from tension of larger wire size - [3].
• Silver pulled by hand, starting with a small roller mill - [4].

OSE Notes

• Pull from one spool to next from a starting spool. Challenge is the first spool - that is a lot of material.
• If start with 3/8" size, need significant spool to start with.

Industry Standards

• Schlatter automated line for cold rolling or drawing down to 4 mm [5]
• Invimec - cold rolling down to welding wire [6]