[TheForge] making d-rings

[terry l. ridder]

hello peter;

yes d-rings used for strapping and belts.
yes, pretty much literally shaped like a capital
letter d.

On Sun, 9 Mar 2008, Peter Fels And Phoebe Palmer 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?
>> 
>> 
>

-- 
terry l. ridder ><>