Summary

Closure replacement for base cap with 20mm wide adjustable strap.
Specific replica of a 9forty cap closure, but will work for others.

Original metal items are cheap cast and likely to break.
If printed properly in PETG, this one will last equally.

Will need Ø 2mm precise bolt shortened to length, which you should have in your collection. If not, just butcher an old VHS-tape recorder, printer, ...

Hope you like it!
Best regards from Bernd's Custom 3D's.

Print Settings

Rafts:

Doesn't Matter

                                            <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.1mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>100%</p></div></p>                                                    <strong>Filament:</strong> Any PETG                to your liking

Post-Printing

Holes to be drilled to 1.9-2mm, do not remember exactly.
But there's a good chance, that 2mm hole relaxes after carefully slow drilling and will be slighty tighter.
A 2mm metal bolt should press in without too much effort.
Will rest in place due to friction.

Base cap closure replacement 20mm 9forty