Methods for Connecting 3D Printer Filament
Connecting 3D printer filaments appropriately ensures a smooth and uninterrupted printing process. For makers and hobbyists, mastering the various techniques to join filaments can enhance productivity, particularly during long print jobs. Here are detailed methods for effectively connecting your printing materials.
Using Heat to Join Filament Ends
Prepare the Filament: Cut the ends of the filaments you intend to connect. Ensure that the ends are clean and square, providing a better surface for bonding.
Create a Joining Sleeve: Wrap a small piece of aluminum foil tightly around both filament ends. This acts as a sleeve that will hold the filaments together.
Apply Heat: Using a temperature-controlled soldering iron, heat the aluminum sleeve. For PLA, maintain a temperature of approximately 180°C; for ABS, aim for about 250°C.
Push the Filament Ends Together: As the sleeve heats up, carefully push the filament ends into the sleeve. Hold them in place for a few seconds to allow the filaments to fuse.
- Cool Down: Once the filaments are joined securely inside the foil sleeve, let them cool for a moment before removing the foil for a clean connection.
Welding Filament for Strong Connections
Set Up Your Workspace: Organize your tools, including a rotary tool such as a Dremel and a rod made from PLA filament.
Align the Filaments: Place the two pieces of filament you wish to join next to each other with a slight overlap.
Prepare the Rotary Tool: Insert the PLA filament into the Dremel. Secure and align it so the filament tip can touch the overlapping area.
Weld by Friction: Power on the Dremel and press the rotating filament against the joint area. The friction generated will heat the plastic, causing it to soften and bond together.
- Finish and Inspect: Once you’ve applied enough friction to create a solid bond, turn off the Dremel and inspect the welded joint for uniformity. Allow it to cool before handling.
Splicing Filament Using a Splicer Machine
Acquire a Filament Splicer: Invest in a filament splicing tool designed specifically for joining filament. These devices are efficient and often remarkably quick.
Prepare the Filament Ends: Cut the ends of the two filament pieces at an angle for better surface contact.
Insert Filaments into the Splicer: Place each filament end into the designated slots in the splicer, ensuring they are firmly seated.
Activate the Splicer: Follow the manufacturer’s instructions to activate the splicing process. This will usually involve heating the filament ends until they fuse.
- Cool and Remove: Once the splicer indicates completion—often with a light or sound—carefully remove the joined filament. Let it cool before using it for printing.
Recycling Filament Ends and Waste
Collect Waste Material: Gather the ends of filaments and any failed prints. These can be recycled rather than discarded.
Use a Filament Recycler: Feed the waste into a filament recycling machine that shreds and melts the plastic, turning it back into usable filament.
Spool the New Filament: Once recycled, the machine extrudes the molten plastic into filament and coils it onto a spool, ready for future use.
- Store the Recycled Filament: Keep the new filament in a dry, cool environment to prevent moisture absorption.
Frequently Asked Questions
1. Can I use ordinary glue to connect PLA filaments?
Yes, cyanoacrylate glue is effective for bonding PLA filaments. Brands like Gorilla Glue and SuperGlue work well, especially for small parts. Apply carefully to ensure a solid connection.
2. Is melting filament ends together safe?
When done with proper equipment and caution, melting filament ends is safe. Always supervise the process and follow recommended temperature guidelines to avoid burns or accidents.
3. How can I avoid filament jams after connecting?
Ensure that the connection is smooth and does not create any larger diameter than the filament itself. A smooth join is essential for preventing jams in the extruder or nozzle during printing.
