This paper investigates the implementation of lean practices in Singapore's manufacturing industry. The primary objective is to evaluate the adoption of lean methodologies across Singapore's precision manufacturing sector. To facilitate this assessment, questionnaires were distributed to companies of various sizes, including small and medium-sized enterprises and large corporations in Singapore. The results reveal that approximately 50% of manufacturers perceive adopting lean practices as challenging. Our study shows that most small and medium-sized enterprises (SMEs) face significant obstacles in implementing lean manufacturing practices. The findings indicate that barriers to implementation related to experience, skill sets, and knowledge pose considerable impediments. Furthermore, our research has established that management support is pivotal to effective lean implementation. Additionally, factors such as employee training, goal alignment, and the establishment of a supportive environment are significant contributors. While the use of tools and external expertise is relevant, internal resources and organizational culture are more important.