What welding technique is recommended?
Documented on the Ford Mustang build
Published February 26, 2026
Stitch or plug welds are common to control heat distortion.
Full Answer
Stitch or plug welds are common to control heat distortion. Tack weld frequently, allow cooling, and grind/tidy welds between passes. Use an appropriately sized MIG wire and settings for thin sheet metal.
Documented In This Build
Related Knowledge
Do I need to use preformed tubs or can I fabricate from sheet metal?Will this modification affect vehicle legality or safety?How much clearance should I allow for larger wheels/tires?How should I protect the new metal from rust?How do I prevent warping when welding thin sheet metal?What wheel/tire sizes can this modification accommodate?How much extra tire/wheel clearance can I expect?How difficult is this for someone with limited metalworking experience?
Related Parts
MIG welding wire (ER70S-6, 0.030-0.035" spool)
$30
Grinding / flap discs (pack)
$20
18 gauge cold-rolled steel sheet (for tubs)
$60
Preformed wheel tubs (alternative)
$250
Seam sealer / panel adhesive
$10
Weld-through primer / zinc-rich primer
$25
Automotive body filler (Bondo or equivalent)
$15
Self-tapping screws / rivets & nutserts (fasteners)
$10
Related Tools
Hammer and dolly set
Spot weld cutter / drill
Angle grinderDeWalt DWE402
Sheet metal brake / metal folderEastwood Leaf Break (or equivalent)
Measuring tools and markers (tape, scribe, straightedge)
Clamps and cleco fasteners
MIG welderLincoln Electric LN-140 (or equivalent)
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