A little more miniature madness this morning. The LG Cross heads are supplied with really nice cast castle nuts on pins for attaching the connecting rods.

The David Andrews castings have something similar but it’s a plain nut (I would guess that the pattern maker used either a 14 or 16 ba nut) rather than a castle nut specifically.

A quick search online for photos of castle nuts and off I went. These are very cruel close ups but I am happy with how they have turned out and now I know how to make them knocking more up in the future will be relatively simple. To give a better idea of scale the pin through the nut is 0.8mm. You will note that one of them has a thick stem to the pin? That’s because I made the first one with a 0.8mm pin right through but it’s a bit sloppy in the cross head hole and it’s well and truly stuck so the other two I made by turning a piece of 1.2mm rod down to 0.8 for a couple of mm on each end.