SUNLU Official Filament Connector, Fast Heating Filament Splicer for 3D Printer Filament 1.75mm, Up to 240°C, Compatible with PLA PETG TPU ABS PA Nylon, Easy to Use, Pack with 200PCS PTFE Sleeve

Good buy.
This filament joiner is great. Works as it is supposed to. A bit difficult to line up filaments and hold in place. But you can print guides to help.I have had no issue with joined filaments feeding in either my ams light or ams 2 pro.

Great product; takes practice, but worth it!!
Takes some practice to figure out how to hold the connector steady while placing it the device, but well worth the effort figuring it out. Only wasted one connector, but figured it out very quickly and can now do a splice within a minute after the device heats up to temperature. Creating a “Frankenstein” roll of last-meter filament and will use that for prototypes and small items that don’t require beautiful aesthetics. Well worth the money and worth the effort perfecting the process with only two hands. 😊

Don’t buy it
Well, I’m extremely disappointed. I waited months for this to be released and then waited a few more months and finally bit the bullet and ordered it. Let me just tell you right now, nothing about this machine is worth the price you pay. I’ll start by saying, it’s not all that easy to use. I watched the instruction video Sunlu provides for it, and also several other videos about the unit, and I was definitely able to get it to splice, but definitely not easy like they show. First off the main reason to buy this would be to combine left overs to not have waste. For that, it works, but the filament is not straight like they show in the video. Trying to hold two pieces of filament in the little ptfe tube and put it in place and press down the heat press all at the same time is not easy, especially when they have that end of roll curl to them and are nor straight. You also have to cut around a 45° cut on both pieces and then mate them together in the ptfe tube like a puzzle. So you have to attemp to hold them in this orientation while doing everything else I just mentioned. Once you get the hang of that it’s not awful to get done. There are also lots of printed helpers out there but I didn’t use them. Next let’s talk about the ptfe tubing. They are horrible. They are so very thin (assuming for the heat transfer of things) that they get easily deformed. So easily in fact that about 35-40% of mine were ruined straight out of the package. Once they are deformed, they are no good as they will no longer create the “perfect” diameter they claim they will have, because the defect will transfer to the filament. This also makes it pretty much impossible to properly reuse the tubing. The other thing is when the lid clamps down on the filament and tube, it leaves a small indent on the melted filament, also ruining the “perfect diameter” they claim to make. No matter how hard I tried, there was no way to get a perfect splice with a proper diameter. The instructions they give are to cut the ends at roughly a 45° angle, puzzle them together inside the tube, put the tube in the heater and shut the lid, hold pressure for 1-2 seconds on both ends by pushing them together, wait for the beeping, remove and let cool for 5-10 seconds, then cut off the tube. This does not work. First off, if you let go of the pressure, it does not splice and will break right away. So what you need to do is hold that slight pressure the entire time. Next, when you push open the lid of the heater, it flings open. This has ruined numerous splices for me as it ripped the ptfe tube right out of the heat channel. Next you have to continue to hold that slight pressure for the next 5-10 seconds until the filament hardens. It doesn’t take long but you need to find that sweet spot to where you have enough pressure to hold it together but not so much pressure that you bend and ruin the splice, as it’s still soft. After that you need to wait like 2 minutes for it to fully cool off before you remove the ptfe. Anything less than that, you risk ruining the splice. Once you finally have all of this kind of dialed in, you can finally use the filament. However let’s talk to printing the filament. Once you get all this done you do manage to get a decent splice that won’t come apart. The diameter will be nowhere near right but at least it’s strong enough to hold. So you go to roll the filament onto the spool. Lol, yeah right. Maybe if you are joining a few decent length end pieces, but not if you are making your own color change filaments and have multiple splices (the other use they claim this can be used for). I put together (20) 100mm pieces of material to try and make a rapid change filament, took about 2 hours and I couldn’t even put it on a spool. I just wanted to print a benchy. Once it got that much pressure the splices failed. So I finally just fed it to my printer and printed the benchy out and let the filament dangle from the back and hoped for the best. Stood there and helped feed the filament (60mms print) in so there wasn’t too much drag on the extrude gears made it about 45% of the way through the print and I thought, okay, this was bad but at least it did what I bought it to do, even if the effort wasn’t worth it, it was printing okay and the splices technically worked. Figured at worst was good for joining leftovers in bigger portions. Then it happened. The biggest thing I was worried about, it completely clogged my nozzle when a big splice hit the hot end. Ruined the print and wasted around 3.5 hours of my night. I tried. I really tried. I wanted this to be awesome, but this is truly a waste of time. I won’t even risk using it just splice leftovers. Definitely going to check into others.

Cet outil nécessite un petit temps de prise en main et une certaine dextérité pour sa manipulation, mais une fois qu’on a compris le principe, ça fonctionne très bien.Il permet de souder des morceaux de filament (PLA, PETG, PC, PA, ABS, ASA) soit pour terminer des bobines sans devoir rester devant la machine à attendre que le détecteur de fin de filament mette la machine en pause, soit afin de créer des filaments personnalisés avec des changements de couleur.Personnellement, je l’ai testé tout d’abord avec de l’ABS (le temps de soudure étant très rapide, les éventuels nocifs de vapeurs de styrène sont infimes, on ne sent même pas l’odeur si particulière du styrène), les deux premiers tests de soudure n’ont pas été concluant, mais dès le troisième essai, j’avais assimilé la technique pour réussir une bonne soudure. J’ai depuis réalisé des tests avec du PLA et du PETG sans rencontrer plus de souci.Cet outil est certes relativement cher, il faudra donc réaliser un bon petit nombre de soudure avant de l’amortir financièrement, mais en contrepartie il permet aussi d’utiliser facilement les restants de bobine et ainsi limiter les déchets.Les consommables (tubes PTFE) ne sont pas encore disponibles à la vente, il faudra donc pour le moment les économiser en évitant d’utiliser la lame présente à l’arrière de l’appareil (cf. 3eme photo) pour les inciser et au contraire, essayer de réutiliser au maximum les tubes pour réaliser plusieurs soudures.Pour moi cet outil de bonne manufacture mérite donc 5 étoiles malgré son prix élevé.

Ottimo prodotto , utile a recuperare tutti i residui di filamento rimasti sulla bobina che difficilmente avresti ancora utilizzato . Per chi ha una stampante 3D è un acquisto da fare