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

Question: 1 / 445

What is the main purpose of stop blocks on a milling machine?

To enhance the appearance of the workpiece

To stop the workpiece from shifting under load

The main purpose of stop blocks on a milling machine is to stop the workpiece from shifting under load. These blocks are essential for maintaining the position of the workpiece during machining operations, ensuring that it remains stable and secure while the cutting tool engages with it. This stability is crucial for producing accurate and precise cuts, as any movement of the workpiece can lead to poor quality finishes or incorrect dimensions.

Additionally, having a secure workpiece reduces the risk of accidents that could arise from unexpected shifts, which could result in tool breakage, damage to the workpiece, or injury to the operator. By using stop blocks effectively, millwrights can enhance the safety and efficiency of their machining processes.

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To prevent tool wear during operation

To control coolant flow during machining

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