Question

Find out the correct sequence for the additive manufacturing process chain?

• A. Build, post processing, STL conversion, CAD
• B. CAD, STL conversion, Build, Post processing
• C. Post processing, Build, STL conversion, CAD
• D. CAD, Build, STL conversion, Post processing

Hint:

Think of the physical workflow to verify the order: Design it digitally (CAD), export it (STL), print it on the machine (Build), and clean it up (Post processing).

Answer 1

The Correct Option is B

Concept: The standard operational pipeline for additive manufacturing (3D printing) follows a systematic sequence from a digital concept to a finished physical part. The essential steps are:
• CAD Modeling: Creating the initial solid geometric design using computer-aided design software.
• STL Conversion: Tessellating the boundary surface of the CAD model into a mesh of triangles, saving it as an standard triangle language (.STL) file.
• Slicing and Transfer: A slicing program cuts the STL mesh into horizontal 2D layers and generates the G-code toolpath.
• Build: The 3D printing hardware executes the layer-by-layer material deposition or consolidation.
• Post processing: Removing support structures, curing, cleaning, or surface polishing to prepare the part for use.

Step 1: Evaluate the logical progression of the process chain. - You must design the part model before converting its format: $\text{CAD} \rightarrow \text{STL conversion}$. - The machine requires the sliced format data before it can begin printing: $\text{STL conversion} \rightarrow \text{Build}$. - Surface finishing or support removal can only occur after the part is printed: $\text{Build} \rightarrow \text{Post processing}$. Thus, the correct logical sequence is: CAD $\rightarrow$ STL conversion $\rightarrow$ Build $\rightarrow$ Post processing.