Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to guarantee the perfect counterbore process [title] Check your machine tool. [step] The first thing you need to do before you begin machining is to check your machine tool is actually capable of machining an accurate counterbore. To check this, you'll need to run the machine checking feature of your metrology software.

Ending1: If you do not have a machine tool, just take the necessary steps to get your machine certified with the system. Go to your machine tools website, or call your metrology (or probe) tool. Ending2: Go to the metrology website or file system, in the video accessories bar, and browse down to your machine tool. Just click on " machine tools " to open the system tools page. Ending3: If the machine benchmark report shows a pass, you can continue onto the next step. If your machine benchmark report shows a fail (see warnings) you must stop machining. Ending4: You can do so using either the windows start and close feature. Along with the check tool, there are also other feature options you can use to gauge the machine tool's strength.

Answer format: ending1/ending2/ending3/ending4