FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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Prepare for the FAA AMT Airframe Exam with our comprehensive quiz. Featuring flashcards and multiple choice questions, each with hints and explanations to enhance your learning experience. Get ready to pass your exam with confidence!

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When necessary, what type of cutting fluid is usually acceptable for machining composite laminates?

  1. Oil-based fluid

  2. Alcohol

  3. Water only

  4. No fluid needed

The correct answer is: Water only

While oil-based fluids and alcohol can be effective cutting fluids for many materials, they are not usually suitable for machining composite laminates. This is because oil-based fluids can react with the resins in the laminate and cause delamination or damage to the structure. Alcohol, on the other hand, can evaporate too quickly and may not provide enough lubrication for the cutting process. Similarly, no fluid is usually not recommended for machining composite laminates as it can lead to excessive heat and wear on the tool. Therefore, water is typically the best and most commonly used cutting fluid for these materials. Not only does it provide lubrication, but it also helps to cool the tool and remove debris from the cutting area.