Ace the Millwright Level 1 Challenge 2026 – Master Your Machinist Mojo!

Question: 1 / 445

Why are parallels used under a workpiece during plunge cutting?

To improve the aesthetic finish

To minimize wear on the cutting tool

To prevent cutting into the table

Using parallels under a workpiece during plunge cutting serves a crucial function in preventing the cutting tool from engaging with the table surface underneath the workpiece. This practice ensures that the cut is made accurately and maintains the integrity of both the workpiece and the cutting tool. By elevating the workpiece, parallels create a gap that allows the cutting tool to operate without the risk of damaging the table or affecting the alignment of the cut.

The use of parallels also allows for better access for chip removal, which can enhance the efficiency of the cutting process by preventing obstructions. Additionally, it enables better visibility of the cutting action, which can improve precision and control during the operation. Overall, the placement of parallels is a common and effective strategy to facilitate safe and accurate plunge cutting.

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For better clamping of the workpiece

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