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Posted by on October 17, 2007, 7:19 pm
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> I have a hunch that the trailer is made from "angle iron" that was 12ga
> sheet stock folded up on a brake rather than hot rolled "angle iron"
> that comes from the mill. I've never seen one of these el cheapo units
> made with hot rolled product.
>
> But good comments on the pre cleaning, weld and hole location, etc.
>
>
>
> JohnM wrote:
> > spamTHIS...@yahoo.com wrote:
>
> >> That's exactly the type of tidbit I was looking for.
>
> >> Most of those folding trailers have an honest-to-goodness C-section
> >> rail, I'd worry less if this had such.
>
> >> Thanks-
>
> >> Dave
>
> > If the trailer was purchased from some sort of retailer then it's going
> > to be an ordinary structural steel angle iron, whatever is cheapest on
> > the day they ordered it. No guarantees on it not having hard spots but
> > nothing to lose sleep over.
>
> > The only issue is that you, in welding onto the frame, not weaken it to
> > the point where it'll fail. Keep any welds away from the edges of the
> > angle iron (say, two times the thickness of the flange) and holes should
> > not be drilled too close to the edge, keep them a goodly distance away-
> > maybe two hole diameters from edge of hole to edge of iron.
>
> > Keep weld beads as small as will suffice, the thinner material is what
> > dictates the size of the weld. Try to not stiffen the frame with what
> > you add, otherwise it'll eventually break at the point where it refuses
> > to flex. If you have to make vertical welds and feel uncomfortable
> > running them uphill, stitch it from the bottom- welding down on a
> > vertical can result in remarkably weak welds, it's honestly best to
> > leave downhill welding to the jobs where it's specified.
>
> > Don't be afraid to use the grinder before you weld, it doesn't take a
> > lot of paint or mill scale to make a mess of your work.
>
> > John- Hide quoted text -
>
> - Show quoted text -
I looked closely at the frame- very sharp outside corner, just about
no radius, looks like it has a fillet on the inside of the corner, and
the corner is thicker.
I'm guessing it wasn't formed on a brake- does that make it more
likely its high-carbon?
Dave
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> sheet stock folded up on a brake rather than hot rolled "angle iron"
> that comes from the mill. I've never seen one of these el cheapo units
> made with hot rolled product.
>
> But good comments on the pre cleaning, weld and hole location, etc.
>
>
>
> JohnM wrote: