Quick Summary
The SUNLU Official Filament Joiner is a filament connector for 1.75mm 3D printer filament. It is designed to fuse leftover filament on the spool, helping you use more of each roll, and it also supports joining same-material filament in different colours.
The unit is described as having fast heating, one-click operation, a visual window and a display screen. The source also states a maximum temperature of 240°C and compatibility with PLA, PETG, TPU, ABS, PA and Nylon.
Who It Is Best For
This product suits 3D printing users who want to join leftover filament or connect same-material filament in different colours. It is for buyers using 1.75mm filament and who want a connector with basic on-device temperature selection and visual monitoring.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | SUNLU, as named in the product title and description. |
| Product type | Filament joiner / filament connector for 3D printer filament. |
| Filament size | 1.75mm filament, so it is aimed at that filament diameter. |
| Maximum temperature | Up to 240°C, which is the stated upper temperature limit. |
| Heating time | About 3 minutes to heat up to 185°C at room temperature. |
| Compatible filament types | PLA, PETG, TPU, ABS, PA and Nylon are listed. |
| Included items | Filament connector, USB cable, 200 PTFE sleeves and usage instructions. |
| Power note | No power adapter is included, and a 5V 2A adapter is recommended. |
Why Buyers Choose It
- The connector can fuse remaining filament on the spool, which supports fuller use of each roll.
- Same-material filament in different colours can be joined for mixed-colour prints.
- The built-in display screen and visual window let you monitor the process as it happens.
- One-click operation and temperature selection keep the process direct on the unit.
How It Works
- Connect power using a suitable adapter, as no power adapter is included.
- Select the temperature for the filament type you are joining.
- Use the one-click operation to start the heating process.
- Monitor the connection through the visual window and display screen.
- Use the PTFE sleeves for fusing between filament and filament.
Real World Use
In normal use, this joiner gives 3D printing users a way to connect leftover filament instead of discarding it. It also allows same-material filament in different colours to be fused, which supports custom-looking prints. The unit is intended for 1.75mm filament, so that size should be checked before ordering.
What To Know Before You Buy
Check that your filament is 1.75mm before ordering. The unit is listed for PLA, PETG, TPU, ABS, PA and Nylon, so confirm your filament type matches the stated compatibility. A power adapter is not included, and a 5V 2A adapter is recommended for correct power-up. The package includes 200 PTFE sleeves, the connector, a USB cable and usage instructions.
Common Buyer Questions
What filament size does it work with?
It is listed for 1.75mm filament.
Does it come with a power adapter?
No, a power adapter is not included. A 5V 2A adapter is recommended.
Which filament types are listed?
PLA, PETG, TPU, ABS, PA and Nylon are named.
What is included in the box?
The connector, USB cable, 200 PTFE sleeves and usage instructions are included.
Final Buying View
If you need a filament connector for 1.75mm 3D printer filament, this SUNLU model gives a clear way to join leftover filament and same-material colour changes. Check the filament size, the listed material type and the separate power adapter requirement before ordering.
