K3911-1 - Lincoln Electric Wire Sizer Dies for 0.035 Inch Wire

Smoother Feeding, Better Welds

Every welder knows the frustration of a stuttering arc or a wire that just won't feed smoothly. Often, the culprit isn't the machine or the settings—it's the wire itself. The Lincoln Electric K3911-1 Wire Sizer Replacement Dies are your secret weapon against erratic feeding and unstable arcs when running 0.035-inch (0.9 mm) wire. Designed to fit Lincoln's Wire Sizer attachments, these dies do exactly what their name implies: they ensure your wire is the perfect size and shape before it ever reaches your gun.

Why does this matter? Welding wire can sometimes become slightly oval-shaped coming off the spool, or it might pick up dust and lubricant residue. When this imperfect wire travels through your liner and hits the contact tip, it can rattle, lose electrical connection, or drag, causing burn-backs and spatter. The K3911-1 dies solve this by gently reforming the wire back to a perfect circle and scraping away surface junk. The result is wire that glides through the liner with less friction and makes solid, constant contact with the tip. This means a smoother, hotter, and more consistent arc that puts the metal exactly where you want it.

These dies are made from tough, hardened steel to last through spool after spool of heavy use. They are a direct replacement for worn-out dies in your existing sizer setup. If you are noticing that your contact tips are wearing out too fast or your arc is wandering despite perfect ground and gas flow, your wire condition might be to blame. Installing a fresh set of K3911-1 dies is a quick, cost-effective fix that restores the precision of your wire delivery system, letting you focus on laying down perfect beads rather than fighting your equipment.