To attach a Bowden tube to your 3D printer's hotend, you will typically need a Bowden coupler or a pneufit connector. These connectors are designed to securely hold the Bowden tube in place while allowing filament to pass through. You can find these couplers at most 3D printing supply stores or online retailers that specialize in 3D printing accessories. Make sure to choose the correct size to fit your specific Bowden tube and hotend. If you need further assistance, feel free to provide more details about your printer's make and model.
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