CAD Omega Seamaster 300 CaseBack Drawings

brinsmead · Sep 17, 2026

I suppose there’s nothing sacred anymore many of you may have seen these but its new to me.
Over at Reddit they have quite a few CAD drawings of the Omega Seamaster 300 case backs very well illustrated and ready to be framed up on Blank Omega Type Case Backs and Laser etched.
Reddit, have a lot of Legal Jargon attached to these files.
Others would be more knowledgeable than myself, in regard to this type of manufacturing, it seems this is another sure hit on the 300.

sheepdoll · Sep 17, 2026

Cad files for the sm300 leaked out years ago.

Sadly they still want way to much for 'Aftermarket Cases and Case parts.' To put it politely. Often more than the real thing costs. Most of them also do not fit the old 55x movements, preferring the NH whatever DIY movement.

CAD Omega Seamaster 300 CaseBack Drawings

brinsmead

sheepdoll

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