3D PassionTitanium V6/Volcano heatbreak V2.3 (1.75mm, All-Metal, Redesigned, not a Clone, 50% Better Performance), 2-Pack.

EDIT 06-03-2019First, I have to say that Vlad from 3D Passion offers amazing customer service. He contacted me about the heatbreaks and worked with me to review what I had done. He sent me replacement heatbreaks that look absolutely amazing. The throats are absolutely flawless. The replacement throats are still narrower than an E3D heatbreak, but filament slides through them very smoothly. I am still testing the heatbreaks and will revise my review if I find further problems, but for now I am updating my review to 5 stars.Original review:These heatbreaks look very well machined on the outside and I am fairly certain that they really are titanium. There is no magnetism and the metal doesn't get hot too quickly. It also dissapates heat quickly too.The inside bore of the two heatbreaks I got need some work though. I dealt with jamming on my printer for over 2 weeks before I finally figured out the cause (don't do multiple upgrades at the same time!) . There are two items that seemed to cause my jamming problems:- the throat of the heartbreak is slightly smaller than the E3D heatbreaks- the inside of the heatbreak is kind of roughI couldn't do much about the first item, but I used a 1/16 inch drill bit and some 0000 steel wool to smooth the inside of each heatbreak. It probably took about 1 hour total. The heatbreaks still aren't quite as smooth as an E3D steel one now, especially if there is a small bend in the filament, but theoretically you won't get bends down past the PTFE tube anyway, right? :) I attribute the remaining roughness to the differences in the width of the throat.After polishing up the throat, printing seems a lot smoother so far. I am not sure how well heat isolation is going yet, but the prints I have tested so far are looking better than before the upgrade with less vertical artifacts. My benchy was almost perfect!

You need this in your printer.Some background: I had a Prusa MK3 and it started out well, but continued to get more frustrating. The filament would melt/grind, a clog would occur, only to extruder normally after the gears could bite down on the filament.It turns out Prusa has its own version of the V6 heatbreak that works well with the multi material unit. It has a flair at the bottoms for the extra strands on the end of swapped filaments. Since I wasn't interested in an MMU, I decided to replace the heatbreak with a standard one.Replacing with a genuine heatbreak would most likely be aluminum or steel, neither are great at thermal efficiency, so the heat would still creep up the filament and too much retraction would give me the same problems.Enter this beast. Not only is titanium great at keeping the heat in the block and nozzle, the tolerances are insane!I have had zero issue with my filament or filament changes since installing. And my printer is faster and my detail is better than ever.Pros:- tight tolerances- 2 in a pack!- great price- thermal efficiency- smooth smooth bore- will make your printer betterCons:- this has set the bar very high for the competitionI have pushed a normal V6 to 200mm/s with this before something else broke on my printer. After the fix I'm running 120mm/s with beautiful details.If you're considering this, buy it and make your life that much easier.

Immediately out of the pack it was apparent that great care was taken in designing and machining these heatbreaks. The tolerances are superb and the finish absolutely screams quality. Installation was smooth and little details about the design process became clear, like how much care was taken to get everything *just the right size.*I haven't even printed with them yet, but I was so excited when I opened the pack I had to review right away. Though I have no doubt by the narrow throat dimension that they will perform just as well as they look.UPDATE: After having printed with this heatbreak I can add a few things. First off the flow is improved with the more efficient heat transfer. With the ptfe liner I could not feed filament at the "fast" speed on my control screen, and now it takes anything I throw at it with no extruder slippage. But without the ptfe lining, too much retraction can lead to the cooling filament getting stuck to the metal throat. Reducing retraction to 0.6mm (in my case) seems to have left me in pretty good shape to continue printing PLA as well as being able to try higher temperature plastics on my machine.