Torch tip

[Glorydays]

What's everyone's preference for casting noble porcelain metals..... single orifice torch tip? Or multiple orifice? I'm guessing the multiple won't get hot enough?

 

[SteveD]

What's everyone's preference for casting noble porcelain metals..... single orifice torch tip? Or multiple orifice? I'm guessing the multiple won't get hot enough?

multiple, propane, oxygen

 

[ps2thtec]

Multi torch tip.
20psi oxygen and natural gas.

 

[doug]

I'm sorry, Doing what? Casting? Back in the day when I did do that I used a multi-orifice tip. Oh those days...Sigh

 

[tuyere]

Rosebud tips are great for casting and all-around general heating.
As an aside- It seems hard to find nowadays, but MAPP is very nice if you need to juice a bit more heat out of a torch you normally run propane through. It's also got a more focused and intense flame cone, which isn't a real asset for casting where a bushy, soft flame is fine (like you get with natural gas),but if you find yourself doing some brazing or spot heat-treating for non-dental purposes, it's a treat. Almost as hot as acetylene, and without the acetylene fairies (floating soot) you get if you cut off the oxygen before the fuel.

 

[Car 54]

Multi torch tip.
20psi oxygen and natural gas.
View attachment 43614 View attachment 43615

This

I went with natural gas, bypassing the regulator for more pressure.

 

[Glorydays]

multiple, propane, oxygen

Very good, thanks