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
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Availability:
In Stock.
Arrives
Wednesday, Jul 29
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Color: Filament Connector - 200pcs Ptfe
Features
- Turn into Value: SUNLU Filament Connector can fuse the remaining filament on the spool, maximizing the use of each roll of 3D filament and reducing waste
- Creative DIY: Filament connector easily fuses filament of the same material but different colors. Create vibrant, personalized 3D prints yourself
- Fast & Precise Heating: At room temperature, it takes only about 3 minutes to quickly heat up to 185C, greatly improving efficiency
- Wide Compatibility: Maximum temperature up to 240C, which is compatible with a variety of 3D printer filament, such as PLA, PETG, ABS, PA/PC
- Easy to Use: One-click operation, select the corresponding temperature according to the type of filament, greatly improving the user experience
- Note: The package does not include a power adapter. We recommend using a 5V 2A adapter to ensure the Filament Connector powers on correctly
- Safe Design: Filament connector with advanced temperature control technology and high-quality insulation materials to ensure safe use
- Visual Operation: Built-in visualization window and display screen to monitor the filament connecting process in real time
- 1.75 mm diameter 3D filament: The diameter of the filament fusing point is 1.75mm, which is suitable for all 3D printing filament 1.75mm
- Packing List: Filament connector, USB cable, PTFE sleeve 200pcs(for fusing between filament and filament), and usage instructions
Brand: SUNLU
Material: PLA, PETG, ABS, PA, Nylon
Color: Filament Connector - 200pcs Ptfe
Item Weight: 4.9 Ounces
Item Diameter: 1.75 Millimeters
Brand Name: SUNLU
Additional Features: Creative DIY, Easy to Use, Fast & Precise Heating, Reduce Waste, Wide Compatibility
Manufacturer Part Number: SLMX-FC-BK-US-GMDCUS
Manufacturer: SUNLU
Number of Items: 1
Model Number: SUNLU Filament Connector
Warranty Description: 1 Year
Material Type: PLA, PETG, ABS, PA, Nylon
Color: Filament Connector - 200pcs Ptfe
Item Weight: 4.9 Ounces
Item Diameter: 1.75 Millimeters
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 29
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: Filament Connector - 200pcs Ptfe
so far I give it 5 stars, its smaller than I thought it would be but that doesn't matter. it works great on my PLA filament. the bond of the splice it pretty strong, it appears to be smooth enough to feed thru my printer. I have not tried to run any splices just yet too busy with other prints at this time. it only takes 3 minutes for the unit to heat up and once its heated the actual splice is done in seconds, when you press the pieces together do it lightly, practice it a couple of times first time I used too much pressure and ended up bending the filament. if you have a bunch of short rolls of the same color this Sunlu Filament connector is IMO in the long run a money saver. if anything changes I will come back and change my review but so far I like it!!
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Reviewed in the United States on February 20, 2026 by Tammy Jones
Color: Filament Connector - 200pcs Ptfe
A little tricky to use by yourself but with practice or a second pair of hands was easy enough to accomplish. Adhesion of the two filaments requires learning the specific pressure you need to apply but only took us two or three tries to figure out. Feels a little bit cheap in the plastics but is functional without much hassle. For the money and relative ease of operation this is a must have for anyone doing a great deal of 3D printing.
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Reviewed in the United States on November 28, 2025 by Lucas S.
Color: Filament Connector - 200pcs Ptfe
My spools of filament remnants were building up. I explored all kinds of alternatives including 3D printed frameworks, home-built joiners, and had saved plenty of PTFE tubing for such attempts. The SUNLU “Official” filament connector was a much easier option. My first use didn’t work well because I pushed the ends much too hard from each side, deforming the resulting weld and ruining the tube. The filament sides do need to be pushed together firmly without smashing them. The included joiner tubes CAN be used more than once by sliding them off one end of the welded filament rather than cutting them off in the included slicer. The most difficult step is holding the angle-cut ends inside the joiner tube for maximum contact since the filament on both sides tend to turn and twist. Since the unit is small and lightweight it can shift and slide around when both hands are holding the filament on both sides to apply pressure. Unfortunately I don’t have THREE hands! Pros: LCD control screen, Fast heating to needed temperature, Over 100 joining tubes included, Compact size, Straightforward operation, Good quick welds. Cons: Three hands needed (!! - Clamping the unit down works best), Small LCD control screen not good for fat fumble-fingers, Easy to burn a finger over heating element (pay attention!), Holding and maintaining the right pressure on each filament out the sides during the weld process. NOTE: Some of the Cons would apply to almost every filament remnant welding technique. Despite the Cons, I would recommend this. It isn’t perfect, but it’s a good product.
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Reviewed in the United States on January 21, 2025 by Bruce
Color: Filament Connector - 200pcs Ptfe
Its a handy tool and once you understand its operation and how to handle the filaments, you will wonder how you got along without it. I printed a holder for it and it is doing quite well for my use.
Reviewed in the United States on March 30, 2026 by Howard Burton
Color: Filament Connector - 200pcs Ptfe
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.
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Reviewed in the United States on January 11, 2025 by Brandon
Color: Filament Connector - 200pcs Ptfe
I am very pleased with this purchase, it does exactly what they said it would, and it's easy to use. Write out of the box the first splice that I made was perfect and actually it was stronger than I thought it would be. On another note, I purchased this as a package and it came with two spools of filament.It was SUNLU filament which is the same company, and I think I'm going to try more of it because I was real impressed with it it printed very nice.
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Reviewed in the United States on February 27, 2026 by John583