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14201142 - Tweco WeldSkill Nylon Liner 15ft for .035-.045 Aluminum Wire

Packaging: pack of 1
$118.38/EA $80.54/pack of 1 only $80.54/EASave 32%

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OVERVIEW

Smooth Aluminum Feeding with Tweco Nylon Liners

If you are welding aluminum with your Tweco WeldSkill MIG gun, using the right liner is the difference between a perfect bead and a bird's nest of tangled wire. The Tweco WS42N-3545-15 is a nylon conduit specifically engineered to handle the challenges of soft aluminum wire. Steel liners act like a file against soft aluminum, creating shavings that clog the gun and cause erratic feeding. This nylon liner provides a slick, smooth tunnel for your wire to glide through, drastically reducing friction and preventing the dreaded "burn-back" caused by feed interruptions.

This 15-foot liner is ready to install in your Tweco WeldSkill gun. It is sized perfectly for the most common aluminum wire diameters: 0.035" and 0.045". Whether you are fabricating aluminum boat parts, repairing a trailer, or working on automotive components, swapping out your steel liner for this nylon version is the first step to success. It supports the wire along the entire length of the cable, preventing it from buckling under the pressure of the drive rolls.

Why choose Nylon?

  • Zero Shaving: Doesn't scrape the wire surface like steel coils.
  • Consistent Feed: Slippery surface keeps wire moving at a constant speed.
  • Flexibility: Moves with your gun cable without kinking the wire inside.

Don't let poor feeding ruin your aluminum projects. Equip your MIG gun with the genuine Tweco nylon conduit designed for the job.

Additional Information
Brand:Tweco
Item:Liner
Length:15 ft
Wire Size:0.035" - 0.045"
Wire Type:Aluminum
Material:Nylon
Series:WeldSkill
Part Number:WS42N-3545-15
Packaging Description:pack of 1

INCLUDED

  • 1 x Tweco WeldSkill Nylon Conduit (15 ft)
  • 1 x Brass Collet/Stop (attached)

APPLICATIONS

  • Aluminum MIG Welding (GMAW)
  • Automotive Aluminum Repair
  • Marine Fabrication
  • Sign Manufacturing
  • General Aluminum Fabrication

FAQ

This liner is made of nylon, which is designed specifically for feeding soft wires like aluminum.

It is not recommended. Steel wire is abrasive and will quickly cut through the soft nylon material, destroying the liner. Use steel wound liners for steel wire.

It is designed for wire diameters of 0.035 inches (0.9mm) and 0.045 inches (1.2mm).

The liner is 15 feet long, suitable for 15ft MIG gun cable assemblies.

It is designed for the Tweco WeldSkill series. While it may fit other Tweco-style guns, it is best to verify the specific series compatibility.

Aluminum wire is soft. Steel liners can shave off small pieces of aluminum that clog the tip, and the friction can cause the wire to buckle (birdnest) at the feeder.

Install the liner into the gun and trim the excess at the front end according to your gun's manual, usually flush or slightly protruding from the gas diffuser seating area.

Yes, WS42N-3545-15 is the model number for this specific item (SKU 1420-1142).

CATALOGUE & SPEC SHEETS

Spec Sheet