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Jump rings may be made most easily by using a small hand drill with various sizes of mandrel. Take a broken burr, old needle file handles or a piece of drill rod and make a slit near the end. (I would use a separating disc to do this). Or one may drill a hole through the rod. Then it may be set into a hand drill or a flex shaft handpiece....
(1999) Complete Story
Often craftspeople start out making craft objects in their living space, a kitchen, a living room, and sometimes continue working in them even when they have grown to the point that they need a separate studio. It is not wise to share one's living and family space with workshop space. Usually there are chemicals, tools, equipment, processes, sounds, materials, wastes, dusts and so on that are unhealthy to be exposed to that are produced in a work shop. If you have these in your living space as well your total exposure increases greatly and your body does not get a chance to recover from any stresses it is experiencing.... (2000) Complete Story
This Korean technique for applying 24k gold to silver is in fact widely used in various cultures; Japanese, Chinese and in the west historically primarily to adhere gold to iron, steel and copper. I found few historical mentions in the west of application of gold to silver using the same methods used in Asia, though there are plenty of Roman and Greek artifacts which upon reexamination in recent years seem to have been gilded in this manner.... (1993) Complete Story
We are assuming you are using W1 water hardening square stock drill rod, W1 tool steel. Many suppliers will sell W1 tool steel. It is often called drill rod (In England 'silver steel'). It should be square for less work in tool making, but round drill rod can be filed or forged to square. You should not use key stock, which some hardware suppliers will try and sell to you: it cannot be hardened as described below.... (2002) Complete Story