A modern CNC has a lot of electrical subsystems, each with their own components and controls, that need a lot of space to ensure that the system is maintainable over time. I didn’t plan my original system with maintenance and upgrades in mind. While this isn’t a “how-to” guiding you through all the elements, this shows some of the key subsystems and touches on a few issues in building your own.
CNC
Upgrading from Steppers to Servos
CNC6 CommentsI swapped out the drive motors on my CNC from steppers to servos; in this post, I go into the details of all the troubleshooting I’ve done over the months before making this costly upgrade. Though it is not necessarily justified for everyone, the improvements I’ve seen in accuracy and performance have made it worthwhile for me, providing the foundation to tackle much more challenging jobs (and to lower my stress level when doing even simple jobs).
Design for Manufacturing
How To & Calculators, CNC2 CommentsThere is a world of difference between designing a one-off product for a commissioned job, and designing something to be manufactured by the dozen (or by the thousand) - those hard-to-reach corners or peculiar material choices might not be a big problem for one creation, but they can add real production costs and potential support problems when done in volume. In this post I touch on a few of the many considerations a product designer needs to consider when manufacturing something in wood.
Integrating a FrankenCNC: Upgrade Part III
CNC2 CommentsPutting together a custom-built CNC is far more than just building the frame. Over two months, loads of wiring, custom metal, and loads of testing and (re)configuration and learning later, I finally have a functional 4’ x 3’ CNC, with an auto-tool changer, 4-axis and 5-axis capabilities, and working dust collection. This post goes into the process of setting it all up, with loads of pictures and a few tips, tricks, and gotchas for others trying something similar.
Worldwide CNC Shopping: Upgrade Part II
CNC1 CommentLimits of the XCarve: Upgrade Part I
CNCCommentThe X-Carve served me well for three years, supporting everything from delicate jewelry box engraving to cutting solid ipe stair treads. However, as more commissions require or can at minimum benefit from the CNC, I increasingly pushed up against its limits. In the first of a three-part series about the process of upgrading this machine, I walk through my requirements for the upgrade and how that maps to the prior limitations of my equipment.