Which one of the process is subtractive prototyping?*1 pointCNC MillingStereolithography ApparatuMulti-Jet ModelingFused Deposition Modeling

Step 1: Break Down the Problem

To identify which of the given processes is a subtractive prototyping method, we must understand the definitions of each option.

Step 2: Relevant Concepts

• Subtractive Prototyping: This method involves removing material from a solid block to create the final shape, commonly through machining processes.
• Additive Prototyping: This refers to building up a component layer by layer, which is done in processes like 3D printing.

Step 3: Analyze Each Option

1. CNC Milling: A subtractive manufacturing process that involves using computer-controlled machines to remove material from a solid block.

2. Stereolithography Apparatus (SLA): An additive manufacturing process that uses a laser to cure liquid resin into hardened plastic.

3. Multi-Jet Modeling (MJM): An additive manufacturing technique that uses multiple jets to deposit and solidify materials layer by layer.

4. Fused Deposition Modeling (FDM): An additive process that builds objects layer by layer by melting and extruding thermoplastic filament.

Step 4: Verify and Summarize

Based on the definitions and the analysis of each process, CNC Milling is the only method listed that is subtractive prototyping, as it removes material to form the desired shape.

Final Answer

CNC Milling is the subtractive prototyping process among the options provided.