Triple Expansion Steam Engine Update, and some toy making

by John

Some pictures following.

I have made the steam chest valves, the valve buckles, and the valve rods have been commenced.

The three steam chests, with valves and valve rods

The three steam chests, with valves and valve rods

The low pressure valve and buckle.  Steam chest behind.

The low pressure valve and buckle. Steam chest behind.  The machining on the buckle did not quite remove all of the casting roughness. 

And on a different subject, regarding last week’s post about making toys, this is the setup on my milling machine for CNC cutting of MDF.  I am using the new high speed head running at 20,000 rpm with a 2mm cutter.  There is a sheet of sacrificial MDF attached to the mill bed, and the material is attached to the sacrificial bed with double sided tape.  I hand held a vacuum cleaner nozzle to suck up most of the MDF dust, rather than breathing it, or having it settle on my machines and causing rust.

IMG_2843

CNC’ing MDF on an industrial scale machine.

The MDF after 20 minutes of CNCing.

The MDF after 20 minutes of CNCing.  This turned into a raptor.