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Scrap 4130 FS

Mmalone442

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I’m looking for any scrap chromoly anyone has that you may sell for a bulk price. I’m learning how to TIG chromoly for my project. Of course I’ll pay all shipping. Thanks
 

planebuilder

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You don't need to use 4130 to learn, mild is fine. There is no such thing as "scrap" 4130, short cutoffs go on the rack to be used later for smaller parts. Cut up old bike frames for tube. Shear mild .025 sheet into 2" wide strips, cut some to 3" long, bend into a "U", place on a flat piece and weld around the curve. :)
 

Mmalone442

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I’ve been messing around with mild steel filler rod and wanted to try ER70S on actual 4130 before committing to cutting the elevator for adding the trim tab. Any comments welcome.
 

lakeracer69

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I'd try ER80S-D2, I think it lays down better. I buy any filler .032, .040, as MIG wire, cut it to length and straighten it. Hold one end captive and put the other end in a drill. Twist until the wire gets straight.

YMMV
 

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