Looking for a good place to buy fire pois in Bangkok?

I've been staying around Thailand for three months now - and having such an amazing time. I would love to learn how to use fire pois after spending a bit too much time on Koh Pha Ngan!

Does anyone have any suggestions, shops or stalls? I don't mind shelling out for some food quality ones.

It's such a beautiful skill and hobby. Thank you fellow farangs!