I’ve been using my Weller WSD81 station set at 375C and a 1.6mm chisel bit with great success.
I've built quite a few QRP Labs kit, with last week a QMX+ and a QMX 20-10. On previous builds I’ve had to scrape the 0.6mm wire, heating just wasn’t good enough. But with the 0.33mm was easy.
What I found was the best way was to cut the wire a bit shorter, perhaps 6mm in excess of what’s needed to go into the pcb, then start the iron right on the cut end where the copper is exposed. Then work the solder blob up to the desired place. This works much better and faster than trying to burn the enamel mid way.
