edge bending of flat bar
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edge bending of flat bar Mark Finn 02-06-2010
Posted by Mark Finn on February 6, 2010, 2:16 am
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have any of you skilled blacksmiths out there had any experience with
this pesky problem ? i'am talking about bending flat stock the hard way.
have fun, mark


Posted by spaco on February 7, 2010, 9:27 pm
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I don't know that I'd call myself "skilled", but I do this type of
bending whenever it's needed.
Exactly what do you want to know?

I do it both hot and cold. Hot is easier when the forge is running,
cold is easier when the Hossfeld bender is set up.
Sometimes it is easier to bend cold, even if a forge is available,
simply because it is easier to hold the stock when it is cold. ---You
don't need tongs.

I simply lay the stock on edge supported in two places a little ways
from eachother and hit it about half way in between the supports, move
along a little, hit again, etc. The smaller the "bites", the smoother
the bend.
The stock may bend sideways (kink) depending on the accuracy of your
hammer blows, etc., so from time to time I lay it on its side to flatten
it before things get out of hand, then back to edge bending again.
The outside of the bend tends to become thinner, so one may have to
make some adjustment for that. If the bend is not sharp, that may not
be an issue. If it is an issue, then bending hot may be preferable,
because you can correct for outside edge thinning as you go.

A lot depends on what you are bending and how far you are going to
bend it.
The ABANA Ring project, for example, requires a 10 inch OD circle
made from 1/4" X 1" mild steel. In this case, the "bend" needs to be 360°.
When doing an edge bend like that, it's good to take a hint from the
farriers. They start by bending the stock from one end until it is
about 90° to maybe 120° of a circle. Then do the same thing to the
other end. Finally close up the circle.

My Hossfeld #2 bender can bend this kind of stock cold, easily, using
that accessory edge bending fixture.

What else do you need to know?


Pete Stanaitis

Mark Finn wrote:

> have any of you skilled blacksmiths out there had any experience with
> this pesky problem ? i'am talking about bending flat stock the hard way.
> have fun, mark
>

Posted by Mark Finn on February 8, 2010, 9:16 pm
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what else do i need to know ?
oh pete, you walked right into that one.
let me think.....how do you make the most amount of money using the
least amount of material doing it as quickly as possible ? here's one,
how do you sell your scraps for more than the object they came from?
or....
how do you accurately second guess the public 99% of the time ?
have fun, mark


Posted by spaco on February 8, 2010, 11:47 pm
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I meant about edge bending.



Mark Finn wrote:
> what else do i need to know ?
> oh pete, you walked right into that one.
> let me think.....how do you make the most amount of money using the
> least amount of material doing it as quickly as possible ?
You only have to do that if you have a commodity type of product---- or
be a Chinese mfr.


here's one,
> how do you sell your scraps for more than the object they came from?
Depends on how the scraps are shaped and upon your marketing ability

> or....
> how do you accurately second guess the public 99% of the time ?
You TELL them what to think.

Pete Stanaitis

Posted by Mark Finn on February 9, 2010, 12:05 am
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i think maybe you're a smart guy pete, so how would you edge bend flat
bar without leaving hammer marks or bruising ?
have fun, mark



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