I Need Two Metals to Withstand Together

I'm guessing that "Silfos" brazing would be the most versatile in joining the different metals of interest. Other ideas may be better, depending on specifics.

My sister-in-law uses air-acetylene for jewelry-sized pieces. If you are thinking of sculptural-sized works, oxy-acetylene is probably better, and certainly faster.

Try to experiment a bit, and see what works best for you. Good luck with your art!

Please post pictures!

From Johnson Matthey Metal Joining:"Sil-fosTM is a silver-copper-phosphorus brazing filler metal, which is used to braze copper and copper alloys. When brazing copper, the phosphorus within the alloy imparts a metallurgical based self-fluxing capability. When Sil-fosTM is used to join copper alloys (such as brass, bronze or gun metal) a separate flux will be required because the self- fluxing action only occurs on copper (see below for details).

This filler metal should not be used to braze iron containing materials like carbon or stainless steels or nickel containing materials as the phosphorus within the filler metal will form brittle, intermetallic, phosphide compounds, at the joint interface. Sil-fosTM is not suitable for use in sulphurous atmospheres at elevated service temperatures."

I'm certainly NOT objecting to the concept of brazing. I'm simply pointing out that significant study may be required to choose appropriate filler metals and fluxes, especially when joining dissimilar metals. Do note that some fluxes have toxic vapors, so appropriate ventilation is absolutely required for their use indoors. We use brazing extensively, although virtually all our brazing is done in vacuum or hydrogen atmosphere, and those processes are not something that can be done at home.

For small items, Capacitive Discharge Resistance welding (one form of "Spot Welding") commonly works well. The almost instantaneous heating and rapid cooling causes very little oxidization, and no flux is required. The parts to be joined do need to be reasonably clean. Depending on the shapes of the parts to be joined, custom electrodes/fixtures may be required.

Copper is a favorite...

I'm not sure I understand what you mean by 'jewelry tree'. Do you mean a free standing metal tree which is a support for hanging or displaying jewelry. Or is it a piece of jewelry (to be worn) which is in the form of a tree. Or simply a metal art tree.

Secondly, you say you are looking for work you can do at home so I assume you will be planning to sell your product, and produce more than one piece. If so, the choice of metal will affect your price point and market, more than it will affect the 'stead fast' quality of the product - which can be accomplished with a variety of suitable metals.

Please let us know more about your plans, then reasonable advice can be given.

Try the Dillon Welding Torch.. I have one and they are great but follow the techniques for using it and you should be very satisfied. From very fine flame size of head of a pin to quite massive with 4 tips. Google the product and you will see videos..

Trees are made from wood. Right?

I have no idea what the OP wants to know.

A few SWAGs here.

Where did the OP go?

We certainly don't need any of THAT kind of humor here!

Just in case, to the OP and anyone else who might be injured or maimed, magnesium burns in air with a blinding white light, and is virtually impossible to extinguish once ignited.

You "could" weld them with an inert gas shield. Aluminium burns like crazy too but somehow it gets welded.....

Whether or not you would want to perform or benefit from a brass/magnesium fusion joint is another matter.

How about hot melt glue? Still waiting for some guidance from the OP.