This one is one of the best designs for cuban links locks very sturdy and already produced and working pretty good.
Messurments in Pictures
This for links size of 15mm 1.3mm stones in total 175 stones Weights: 14K - 16.7 grs / 10.7DWT 10K - 14.9grs / 9.5DWT
More Cuban Lock sizes avaible:
8mm-9mm Cuban link Lock: https://www.cgtrader.com/3d-print-models/jewelry/brooches/8mm-to-9mm-cuban-chain-lock-system
13mm Cuban Lock: https://www.cgtrader.com/3d-print-models/jewelry/brooches/13mm-cuban-link-lock-large-version-3-parts
17mm Cuban Lock: https://www.cgtrader.com/3d-print-models/jewelry/brooches/17mm-cuban-link-lock-large-version-3-parts
23mm Cuban Lock: https://www.cgtrader.com/3d-print-models/jewelry/brooches/23mm-full-stones-cuban-links-lock-3d-print-model
Need a custom design or modification feel free to ask me
More of my models at: www.cgtrader.com/ferocar