Here's the tube from inside my J-Head:
and here's inside the bit that points into the hot end:
I'm guessing it looks a little on the rough side. Any suggestions as to what kind of abuse would cause this?
Thanks,
Phil
Mendel iteration 2
J-Head Mk4 (0.5mm & 0.4mm) 3mm sleeve
That head from eBay from Poland (0.3mm)
Wade, Wade's accessible