Why choose this kind of nozzles?
1. A big problem with small, hot and slow prints is the heatradiation of the hotend and nozzle itself. To get as little as possible heat into the print, the nozzle needs to be as long and pointy as possible.
The longer the nozzle, the bigger the distance between heaterblock and the print. And the more pointy it is, the less heat radiation can affect the print.
2. Paying a little extra for a hardened, wear-resistant nozzle makes both practical and economic sense. By the time you’ve printed a single spool of abrasive filament you’re saving money.It also saves a lot of time as you won’t be constantly replacing worn out nozzles.
With removable pointed steeless tips.
It's easy to change nozzle tips in time when the filment block the tip of nozzle.