I found it convenient to have a table with a grid of nuts for attaching the workpieces, that could double as victim material. In this note I describe how to make such a table out of HDPE.Read on →
The CNC3020T mill that I own has terrible repeat positioning accuracy. In this note I explore cause and possible solutions of this problem.Read on →
The CNC3020T CNC mill doesn’t come with anything particularly useful for fixing the workpiece to the table. In this note I describe a simple wooden fixture that is suitable for securely attaching rectangular pieces of material to the table.Read on →
In this note I explain the way to extend the 3020T CNC mill with a coolant pump (especially useful for milling plastic) and also, as a side effect, a spindle direction switch.
I have used a lot of locally-sourced components which will probably be unobtainable in other parts of the world. However, it should be trivial to find equivalent ones and adapt the instructions.Read on →
In this note I demonstrate that a bipolar transistor can be made to emit light.Read on →
In this note I describe a simple and quick photolitographic process with excellent repeatability that I use for producing high-quality PCB prototypes.Read on →
Recently, I wondered if I could mill out a working lens using my CNC mill, for no other reason than curiosity. Turns out that yes, it is possible and even easy.Read on →