What the thread found

• Follow focus rings can be designed using free CAD software and produced through 3D printing services.
• The design workflow involves creating the model in SketchUp, converting it in Meshlab, finalizing dimensions in Netfabb, and exporting as an STL file for 3D printing.
• 3D-printed focus rings produced through commercial printing services cost approximately $20 per unit including shipping.
• Ordering a small test batch before committing to a larger production run is advisable because there can be minor dimensional variations between printed units.
• Free design files can potentially be shared or downloaded for use in personal manufacturing.

Depends on

• Design specifications are specific to early Bartech models with a particular knob diameter and would need separate designs for newer Bartech versions or other follow focus systems.
• The material composition and its compatibility with marking tools like permanent markers was not discussed in detail.
• Experience is based on one user's production and testing of 20 units, with noted minor fit variations.

Parts

Follow Focus

Same gear or parts

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