Can I align a workholding chuck without a master?

Yes, you can align a workholding chuck without a master, but using a master is the recommended standard to ensure high precision and verified accuracy.

Without a master, some customers indicate the locators directly, splitting the measured distance to find the center. Another method is to place a reference item in the chuck, indicate a surface, rotate it 180°, and compare the readings across both axes until they agree.

However, these methods only provide approximate alignment. The reference item’s own errors affect the result, and making repeated adjustments takes extra setup time. To eliminate reference errors and achieve exact, repeatable alignment, using a dedicated master is the recommended solution.