Designing a Carriage Lock

Last Updated: 6-2-2020

Short demo of the clamping effectiveness

A simple part, but the first real upgrade I’ve made for my lathe. The top is 30.1mm x 25.50mm wide, while the base is 30.1mm x 39.1mm wide. Total thickness is 12.75mm, and the shoulders are 8mm tall. The only critical dimension here is the top 25.50 measurement – Ideally, it’s tight enough to not wobble as it moves through the bed, but not so tight as to bind. I found my bed to very loosely (and coarsely!) machined. It’s something I hope to clean up in the future, but it not critical.

Finished The finished part