Re: E3D's Volcano - High Speed Printing!
I would say that it would be fine. Doubling the melt zone is just like halving the print speed, and you don't get burns and clogs at 30mm/sec.
The downsides to Volcano:
1.) longer melt zone, some polymers may not like this
2.) more expensive to machine (slightly)
3.) longer hotend, sacrificing z-height
4.) longer hotend, increasing chances of bending the heatbreak