Summary

To make multicolored vases, you don't need to weld filament. Just put pieces of different colors into your PTFE tube. As there is a chance of them becoming stuck (ask me how long it takes to get ~40 pieces of filament unstuck in a 150mm tube) it is well advised to have a way to separate the tube.

This part has a M10 thread and is 4mm on the inside. Just use the "default" PC4-01 / PC4M10 fittings, put your tube parts in there and you have a nice smooth connection for your filament to travel through.

Threads made in OpenSCAD with "Nut Job" https://www.thingiverse.com/thing:193647
Edited in Blender

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>200</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20</p></div></p>                                                    <strong>Filament:</strong> - PLA                    <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Warning: Using this model for anything other than making multicolor vases is forbidden by law in over 70 countries worldwide and can result in confiscation of your printer.</p></div>

PTFE Tube Connector with PC4-01 PC4-M10 Fitting

PTFE Tube Connector with PC4-01 PC4-M10 Fitting

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