[TheForge] making d-rings

[Bruce Freeman]

Since D-rings of that sort typically need not be precision, you could
forge a mandrel by placing a steel shaft in a swage block and
flattening the upper surface.  Wrap wire as Peter says, then cut off
with a cut-off wheel, preferably clamped in place so you can slide the
mandrel along the wheel.
Bruce
NJ

On Mon, Mar 10, 2008 at 3:24 AM, Peter Fels And Phoebe Palmer
<artgawk at thegrid.net> wrote:
> Hi Terry;
>  Are we talking D rings like for strapping or belts for quick
>  release fastenings. These would be literally D shaped?
>  I like to make a mandrill, ideally slightly tapered, out of pipe
>  or shafting, with one flat side. The flat side can be forged,
>  sawn, torch cut or ground.
>  Grind a matching flat on the side, by the bottom to fit your vise
>  or hardy hole.
>  Cut a notch or weld on an L shaped pin just above the vise flats
>  to hold the stock against the mandrill.
>  Clamp the mandrill soundly in the vise.
>  For small stock, copper or brass you can bend it cold often.
>  Stick the end of the stock between the mandrill and pin ( or in
>  the notch) .
>  Then wrap the stock around the mandril ,pulling both around and
>  lengthwise on the stock. When you come to each edge of the flat
>  side of the D, help the stock lie flat with a wooden hammer,
>  while pulling on around.
>  Keep going around till you run out of stock, heat or patience.
>  What you have now is a spiral of D rings. You can cut them free
>  with nips, a cut off wheel or chisel.
>  Flatten and align them on the anvil. Then solder, braise or weld
>  the ends together.
>  With a little set up, it's possible to crank out a bunch of them
>  pretty quickly...
>  Hope that was your question...pf
>
>
>
>  terry l. ridder wrote:
>  > hello;
>  >
>  > i have the occassional need for a pair of d-rings.
>  > my occassional need may become more than occassional
>  > if i were able to make my own d-rings. d-rings, are
>  > simple items. as the whether the d-ring is welded or
>  > not would depend on its intended use. the small size
>  > d-rings could be formed cold.
>  >
>  > a while ago i watched an old movie about forging chain.
>  > the movie showed a length of hot steel/iron being placed
>  > in a hydraulic bender. formed the chain link in a short
>  > time and one heat. a properly geared handcrank model could
>  > easily make d-rings. that is the key though a 'properly
>  > geared' handcrank model.
>  >
>  > whether it is making a link for a chain or a d-ring,
>  > basically it is just link bending pipe.
>  >
>  > when prototyping a device or even a project, what do
>  > you use? wood, acrylic sheet, plasticine clay?
>  >
>  >
>
>
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-- 
Bruce
NJ