Next the clevis head of the connecting rod.  Setup up the dividing head on the mill and clocked it up.

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Milled two of the sides and drilled a 2mm hole for the pin.

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I made the slot using a slitting saw.

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Then milled off the other two sides.

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I have a habit, before taking the part out of a chuck, of having a final look at the drawings. Good thing I did it because I noticed that an exact clevis head is required for another rod.  So I turned the part around and made another clevis. They still need the ends to be rounded off and then to be separated.

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Next was a simple item, namely the lever.

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Made from a piece of 3mm stainless 316 flat bar that was available.  It is shown with the clevis heads installed with 2mm bolts and nuts.

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I managed to get my hands on a sorry looking bit of bright mild steel (60mm x 60mm x 80mm) for 5 euros for the cylinder.

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I manually hacksawed off some of the excess length in the bar.

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I also started reducing the sides to size.  I was at first tempted of doing it in the lathe but then I went for the mill and a fly cutter.  I wasn't getting any good cuts using the HSS tool in the fly cutter so I decided to try some of the lathe tools with carbide inserts and finally settled on the one which gave the best cut.

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Finished off the front and rear sides on the lathe using the 4 jaw chuck.  Left it about 3mm long.  Marked the centre of the cylinder and using a dead centre held it in the chuck and the jaws slightly tightened.  At least I will be close when indicating the cylinder in the chuck.

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I then proceeded to indicate the piece in the 4 jaw chuck.

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Drilled the hole by step drilling and finished off with a 25mm blacksmith's drill.

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Finished the boring operation for the cylinder and left it 0.1mm oversize so that I can hone it later on.  Can't remember what RPM I used.  It was giving a decent finish so left it as it was.

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I then proceeded to face off the extra length of the body.  This way I am sure that this face is perpendicular to the bore.

DRAWINGS HERE

PART SIX HERE