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Category Archives: Model Engineering

Building an Orrery #1: Looking for Plans

I don’t remember what made me think of it but I took a fancy to build an Orrery a little while ago. Naturally, my first recourse was to scour the web via Google for plans. I would have liked to find some dimensioned drawings in the style of engineering. What I did find was lots […]

Good Results with Cheap TCMT Tools

From the outset of setting up my metalwork shop I decided to use tungsten carbide tipped tools for the lathe. I just don’t want to be bothered with the fiddle of sharpening and having to keep changing the shims under the tools. This is at variance with the received wisdom that the low power and […]

DIY Milling Machine Rev Counter for Under £5

As I have a variable speed millling machine without a digital readout (its an Axminster SIEG X2) and wanted a bit more control at the hundreds-of-RPM level than I could get by listening to the pitch of the machine or watching the chuck, some technology was required… Cycle Computer Rev Counter on an X2 Milling […]

How to Make and Use a Split Bush (Chucking Piece) for Concentric Turning

I’ve recently been making a Stuart 10V with the help of the Andrew Smith/Pengwern building guide. At one point they recommend the use of a split bush to afford a greater degree of concentricity in turning the piston rod (and both the piston and cross-head attached to this). A sketch of the split bush is […]

Towers of Hannoi in Metal

This easy piece of engineering, a small Towers of Hannoi set, was a break from more complicated engineering and completed as a Christmas present. Downloads: CAD Plans in Draft-IT format CAD Plans as GIF image Construction notes

Paradoxical Cones – the Uphill Roller

I came across an account of the “uphill roller” in a book by Julian Havil, “Nonplussed!”. The basic idea is that two cones, joined at the bases, will appear to roll uphill on a pair of diverging rails if the combination of the angles of the cones, slope of two rails and divergence of two […]