In the video “Things I Wish I Knew Before Buying a CNC,” Matt from 731 Woodworks shares valuable insights and practical tips that he wishes he had known before purchasing and using a CNC machine.
This video is an essential resource for anyone considering investing in a CNC machine, providing a clear and honest look at the learning curve and necessary accessories.
Matt begins by addressing the significant learning curve associated with CNC machines. Unlike 3D printers, CNC machines require a deeper understanding of setup and operation. Matt emphasizes the importance of dedicating time to learn the software and machine capabilities. He recommends the Carbide 3D website, which offers step-by-step tutorials to help beginners get started, a resource that wasn’t available when he began his CNC journey.
One of the most crucial aspects Matt discusses is the selection of CNC bits. He explains the differences between upcut, downcut, and various V-bits, recommending beginners start with essential bits like ¼ inch and ⅛ inch downcut bits, along with 60° and 90° V-bits. He also suggests investing in a surfacing bit and bullnose bit for more advanced projects.
Matt also highlights the availability of pre-designed files on platforms like Etsy. These files, compatible with Carbide 3D’s software, allow users to quickly start creating products without needing advanced design skills. This approach helps new users get accustomed to the machine and software while producing sellable items.
Accessories play a critical role in CNC operation, and Matt advises on essential tools like digital calipers for measuring material thickness, plastic clamps for securing workpieces, and specific sanders for finishing. He particularly recommends the Milwaukee M12 orbital detail sander and double-sided tape for added stability during cutting.
Dust collection is another key point, as CNC machines produce a significant amount of dust and shavings. Matt recommends using a shop vac with a dust separator or a dedicated dust collector to maintain a clean workspace and protect the machine.
Speeds and feeds can be intimidating for beginners, but Matt reassures viewers that modern CNC software often auto-calculates these settings. He advises tweaking these settings as needed based on the machine’s performance and project requirements.
Finally, Matt discusses the size of CNC machines. He initially thought a larger machine was necessary but found that a 2×4-foot cutting area sufficed for most projects. This size is manageable in a small workshop and versatile enough for a wide range of tasks.
“Things I Wish I Knew Before Buying a CNC” is a must-watch for anyone new to CNC machines. Matt’s practical advice and candid reflections offer valuable guidance, ensuring that viewers can make informed decisions and maximize their CNC experience.