I have a collection of thin tungsten cylinders if anyone is in the market!
Glassblowers use tungsten rods to pierce borosilicate glass. When you get tungsten and a piece of glass hot, you can push the tungsten through the glass fairly easily. Tungsten doesn’t get “wet” and stick to glass at these temperatures (~2000F), unlike other metals we use such as steel or brass. We tend to buy these at the welding store (arc welders use them as electrodes or something).
Note that if you're buying welding tungsten as a plaything, avoid the oneswith the red paint on the end - they contain thorium to improve the electrical arc and as such are a bit radioactive, and shouldn't be directly handled for long periods.
I'm a hobbyist tig welder. 1-2% thoriated electrodes emit alpha particles that won't penetrate skin. It's really only a risk if you breath in a lot of the dust created by grinding the tip of the electrode to a point. That said, ceriated, lanthanated and pure tungsten electrodes are widely available.
Indeed, the thorium ones definitely shouldn’t be put into a 5000 degree flame 2 feet in front of your head. All the other metals in glass work are bad enough.
Glassblowers use tungsten rods to pierce borosilicate glass. When you get tungsten and a piece of glass hot, you can push the tungsten through the glass fairly easily. Tungsten doesn’t get “wet” and stick to glass at these temperatures (~2000F), unlike other metals we use such as steel or brass. We tend to buy these at the welding store (arc welders use them as electrodes or something).