Hello, I need to somehow connect a 1-72 (really small) brass threaded rod to a 1/8'' alumina rodIs there a certain coupler or connecting shaft that would help me accomplish this?
If you can buy charcoal (not the square briquettes, but the one that looks like wood) then you can do itYou need basically 2 things besides thatFirst, a place to hold the charcoal (you cant just dump it in a pile, a small amount of bricks shaped in a rectangle will do)Second, you need a powerful air source to provide ample amounts of air to the burning charcoalThe reason charcoal is great for grilling is the ability to control the temperature; deprive it of oxygen and you can slow cook/smoke food at low temperatures, give it free access to air and it will sear a steakBasically you would have some sort of air pump (something along the lines of a leaf blower, though no need for that amount of power) connected to a metal tube going into your pile of charcoal to provide air directlyThis should melt aluminum, and turn steel red enough to hammer into various shapes.
I do not know of any off the shelf hardware You can always make an engineering drawing and have a machine shop quote you a price ButBefore you get too far in this, I suggest you very carefully consider exactly what you need this connection to doExactly what are the requirements? Will there be simple tensile or compressive stress on this connection? How about side loads? How about impact loads? Will there be vibration? Is thermal conductivity a concern? How about coefficient of thermal expansion? How long does this connection need to survive? What are the consequences if this connection fails in service? Is brass the best material for the screw? Is alumina the best material for the rod? What type of alumina are you using? This is, after all, EngineeringI suggest you do someYou can buy machinable ceramic that has properties similar to alumina ceramics (of course there are many different types of ceramics available in the form of rods).
