Quote Originally Posted by RP Iron Man View Post
Yeah, some people experience leaks, some people don't. It really depends on the hot end and the assembly.

As for the short "melt-zone", basically I am referring to the length of the heated portion of the hot end. A short "melt-zone" means a short heated portion, which translates to a smaller volume of molten filament in the hot end, which in turn results in less "ooze" from the nozzle. 'Ooze' is caused by gravity acting on the liquid molten filament pulling it down through the nozzle (you can test this by turning your printer upside down! No more ooze... but it is awkward having your printer upside down). By decreasing the volume of molten filament in the hot end, you are decreasing the pressure that gravity is exerting on the molten filament and therefore less plastic oozes out of the nozzle tip.

Hence, shorter "melt-zone" = less "ooze" ---------- longer "melt-zone" = more "ooze"

Eric
Yeah I get what you are saying, thanks clearing that up.