HD1M - PEN. Medium Sharp Razertip Fixed Tip Pen - heavy duty.
Medium Sharp - Heavy Duty Pen
Knife like skew for extremely crisp cuts. Burns fine straight lines or lazy/tighter curves. Can use toe of skew for miniature work and short lines or the flat of the blade for long, straight lines. Tip can be inverted and toe used for fine stippling. HD1M is more robust than the F1M. It can take more pressure and can be used for light carving at heat.
The tip is welded to the pen body providing great conduction and durability.