FLL Team MC2 | How to Fuse 3D Filament: Plastic Bottle to 3D Printer Filament Series @FLLTeamMC2 | Uploaded March 2022 | Updated October 2024, 13 minutes ago.
Here are three great ways to fuse two pieces of filament. Please note that, unlike one of the videos shown, we do not use ABS filament. Our filament is made of reused PET bottles.

00:00 What you Need
00:24 Candle
00:47 Heat Gun
01:16 Fuser Block

You can watch the videos in full at:
youtube.com/watch?v=gyMvT61mYPY
youtube.com/watch?v=Z9isSsp9tNY
youtube.com/watch?v=bnTNdcKsNT0

To build a fuser block: 3dprinting.com/how-to/fuse-filament-home