True or False: When reaming holes in titanium assemblies, no lubrication is required.

The statement is false. When reaming holes in titanium assemblies, lubrication is indeed required. Titanium has unique properties that make it challenging to machine, such as a high strength-to-weight ratio and a tendency to work-harden. These characteristics can lead to increased friction and heat generation during the reaming process.

Using lubrication helps to reduce friction, dissipate heat, and prevent the reamer from dulling prematurely. The right lubricant can also help to achieve a better surface finish and maintain the accuracy of the hole being reamed. Thus, reaming titanium without lubrication is not advisable and can lead to poor results and potential damage to both the workpiece and the tool.