Rapid prototyping landscape: Are Solid Ground Curing (SGC) systems the most common rapid prototyping technology today?

Introduction / Context:
Solid Ground Curing (SGC) was an early photopolymer-based rapid prototyping method that used full-layer exposure with masks, followed by wax support deposition and milling. While innovative for its time, SGC equipment became rare as other technologies—FDM/material extrusion, SLA/DLP, and powder-bed fusion (SLS/SLA variants, metals)—grew dominant. Thus, stating SGC is the most common RP system is incorrect.

Given Data / Assumptions:

• We consider current industrial and desktop additive manufacturing usage.
• Prevalence is measured by installed base and market availability.
• Competing processes have matured and diversified.

Concept / Approach:
Modern adoption favors processes with simpler mechanics, lower consumable costs, broader material portfolios, and strong ecosystems. FDM is widely used for prototyping and fixtures; SLA/DLP excel at fine detail; powder-bed fusion addresses functional polymers and metals. SGC's complexity and cost limited its long-term adoption.

Step-by-Step Solution:

Verification / Alternative check:
Catalogs and service bureaus predominantly offer extrusion, vat photopolymerization, and powder-bed fusion; SGC machines are scarcely available.

Why Other Options Are Wrong:
Assertions about dental parts, wax layers, or build speed miss the broader adoption reality; prevalence is determined by ecosystem and economics, not a single parameter.

Common Pitfalls:
Using outdated historical sources; generalizing from niche installations; confusing technology principles with market share.

Final Answer:
Incorrect