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There's a fair few ways of achieving the same effect. The bracelet I repaired has one end of the loop between the lower galleries fixed, the other moving (except that the other end in this case...

I took some grab shots of the one I worked on last week - they aren't pretty, they're just there for my notes.

The clasp with the frozen pin in the hinge:
12886

Where the pin broke away from:...

For double gallery settings, a loop from one lower gallery to the next.

Close them up as close as possible, run a fine sawblade through. Close it up and see if it's adequate; if not, run the saw through again.

That works too, of course :D

If you've got stones, immerse them in water. Otherwise... Wait for it to tarnish (or use something to deliberately tarnish it).

Warm the piece with a torch until the solder joint oxidises.
It's how I find them when doing ring repairs/resizing too.

-4, the mud is starting to freeze solid making things unpleasant for the ponies walking out to the fields.
Bright though.

TIG glasses, shade 5 here.

I ordered some bits on Thursday with no issues.

A) Yes, they're still trading.
B) The website changes regularly (mostly minor updates).
C) This is a forum for jewellers, it's not the ideal...

People buy a lot of things that are utter junk. Certain large jewellery brands for example... It means nothing other than the sales figures are high.

Is there a jewellery context to this?

Still very unlikely to adhere - you'd be better off creating the new parts & firing them then getting them TIG welded in place. Not that I'm sure how well fired bronze clay TIG welds (I know that...

Even with the laser, I'd be cautious about that. The metal is presumably seriously work hardened and it'll happen again - at which point it's all your fault.
Customers ignore caveats and warnings.

One word: Shrinkage.
It won't adhere and the clay will pull away as it sinters.

It'll fit, but I've not seen a good quality Crocker-style sharpener in a very long time - and that one wasn't new. All of the modern ones I've seen have been very, very poor. I would advise against...

There are some reusable moulding compounds available, but it's difficult to assist without knowing which one.
I've used a PVC-based one in the past which was not the nicest to work with.

What moulding compound? If it's Oyumaru, then try this: https://www.google.com/webhp?q=Oyumaru+instructions

So you're not alloying anything, just calculating the gold content.
The only time I'd bother doing that is when alloying.

Granules, perhaps? I usually make my own (clipped bits of wire + charcoal soldering block). I suppose you could use casting grain if the uneven look was what you were after.

It's something to treat with caution - but most chemicals are, really. It's very effective on accumulated gunk in rings, providing there's no stones that won't handle it.

I'd concur. For really gunked up pieces I sometimes soak them in caustic soda prior to the u/s clean.

No, and to be blunt if you're looking to build your business plan on the basis of free information from random strangers online that's not something I would regard as advisable.
Hire a consultant. ...

Given this is a forum for individual makers, this isn't the right place to try and find answers to those questions.
It sounds like you need an industry consultant.

Re: #6... I use 4/0 or 2/0 blades on 5mm steel. The guides on how sawblade vs thickness of metal are usually based around having a minimum of 3 teeth in the cut (and you can affect that by tilting...