Summary

Note: New version using only Chicago Screws can be found here: https://www.thingiverse.com/thing:2761482

Could only find Center Finder Tools, But I needed a Center Line Marking tool, so I modified them to mark a center line.

Minimum width for marking center line: 22mm
Maximum width for marking center line: 59mm

Fasteners required:

Chicago Screws, Shaft Diameter 4mm x 12mm. Qty: 4
M3 nut. Qty: 2
M3x12 Csunk screw. Qty: 2

3D prints required:

CF_arm.stl x2
CF_link.stl x2
CF_rule.stl x1

Print Settings

Printer:

Kodama Trinus

                                            <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20%</p></div></p>

Post-Printing

Remove the "mouse ears" with a sharp blade.

Center Line Finder

Note: New version using only Chicago Screws can be found here: https://www.thingiverse.com/thing:2761482