Summary

I also have a Chinese 3040 desktop CNC machine and I made some fixtures for fixing wooden boards. I didn't like the metal fixtures.
It might fit also on the 6040 or the 3020. Enjoy !

It is a tight fit, so sanding is required.

It is designed to fit a M6 nut and M6 screw.

Print Settings

Printer:

DaVinci 1.1 plus

                                            <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Yes</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>0.3</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>25%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I made several using different infills. I would recommend a higher infill due to stresses on the part. It has to be strong.</p><p>I printed from 0.2 mm to 0.4 mm, it doesn't really matter.</p></div>

desktop CNC 3040 / 6040 fixture