# 1.75mm filament soldering tool

> Aluminium connector for soldering the ends of 1.75mm 3D filaments, with an internal teflon guide for correct alignment. It allows joining two spools or combining colours of the same material (PLA, ABS and others), reducing waste. Soldering is done with a lighter, melting the filament ends. Colour: black. Package contains: 1 x filament connector.

- Page: https://sigmanortec.ro/en/175mm-filament-soldering-tool
- Price: 45.33 RON
- Availability: In stock; 1-2 zile
- Reference: 9915 · EAN: 5949720763510
- Category: 3D and CNC printers > Extruders
- Package (shipping data): 0.069 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 06:34 (Europe/Bucharest)

## Description

Aluminum connector for bonding 1.75 mm 3D filament ends, ideal for joining two rolls and combining colors of the same material, reduces waste and allows printing to continue without interruption. Compatible with PLA, ABS and other 1.75 mm filaments, internal guide for correct alignment, easy to use with a lighter to melt the ends.
Connector for welding 1.75mm filament that allows the bonding of filament ends, allowing for example the welding of two filaments of different colors, but the same material.
It is made of aluminum and is compatible with 1.75mm filament. With this connector, you can reduce material waste and continue printing without interruption.
For soldering, it is necessary to use a lighter to melt the ends of the filament.
Specifications:
Compatible size: 1.75mm
Material: Aluminum
Color: Black
Usage: Bonding PLA, ABS filaments and other 3D printing materials
Package includes: 1 x filament connector
Use:
Cut the ends of the filaments to be connected, ensuring a straight section.
Insert both filaments on opposite sides and push them until they meet in the hole, leaving 1-2mm exposed. Make sure the filaments are straight, otherwise it will be difficult to push into the Teflon tube.
Heat the joint area using a heat source. Avoid exposing the Teflon to fire. Heat only the filament and do not burn the Teflon.
Slowly push the filament towards the Teflon area.
Gently pull the filament back and forth for an even joint.
After complete cooling, push the filament through the connector and cut off the excess filament.
Test the connection by gently bending it before use. If a cracking sound is heard, repeat the process.
Stabilize the filament with a finger before heating it to improve welding.
Heating time varies depending on the material – harder filaments require more time.