Anyone have had any experience in the usage of the HubTN models? I'm trying to see how well they hold up in terms of round count, sound, and rapid/FRT rates of fire. I'm in the middle of making a couple of these and I'm curious how these hold up compared to the FTN as the FTN has CF tubes or aluminum pipes for reinforcing and these use printed shells.

Interested in hearing stories or seeing videos of almost any caliber, 9mm, 5.56, .300 AAC, .22LR, .30 cal.

So I've been printing with the 0.5KG spools with great success. But the issue is they're expensive and I've run through them quickly Found a great deal on a 3kg spool, basically same cost as 3 0.5KG spools. Problem is every time I try printing from my Sunlu E2 it fails the print because the spool is heavy and I believe gets caught in the dryer and isn't extruding filament. The worst part is I don't even know when it happens, the P1S just runs as if it's still feeding filament.

Anyone using these have a solution?