> will carbide electrodes work well for .oo5 titanium sheet?
Um. Dunno, never tried that!
OK, the resistivity of copper is 10.2 (ohms/mil-ft, a stupid unit but ignore), the resistivity of Titanium is 259 (LOTs more), while the resistivity of chromium is 78.
I mention chromium because many forms of 'carbide' as used for machining use a matrix of chromium (I think). In that case, carbide rod might work.
If you are talking about carbide as used for a furnace element, I woukld have to say dunno.
In any event, it could be worth trying, but it seems likely that the carbide rods will get hot! OK, low duty cycle, optional water cooling, whatever.
Or use copper electrodes with carbide tips? But watch for sparking. I tried this with steel core tips to the electrodes and it was not very successful, so who knows?
It would be very interesting to hear from anyone who has actual experience of this!