It is the day. Today is the day when we finally assemble the first of three motor controllers. Rather than ruin a perfectly well-etched board, we’ll experiment with a vise-mounted, handheld power tool to drill 0.8mm vias into our test board. The test board is a reject from a previous expose-and-etch attempt that had uneven trace widths.
I’ve put in an order for a stepper motor and ball screw – quite excited and pleased that this online reseller (which we’ll name later) has responded. We’ll see if the experience of dealing with online merchants is any good; otherwise we’ll be continuing our walkabout across Binondo streets and alleys to find suppliers for these (and several other) key parts. Continue reading “Thinking CNC – Curing my WTFSS”
I’m starting this project with nothing more than an inexpensive drill press, a wood router, a Black and Decker RTX-1 and a few hand tools. This severely limits the precision of any metalforming work I can do. This means that I’ll need to rely on precision made parts – bearings, primarily, and a ball screw and nut – and use those to create a reasonably true frame with bearing rails for a hand-cranked, single-axis feed table. Continue reading “Thinking CNC – Bootstrapping, Costing”