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First mini lathe project, oscillating steam engine.

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Ross:
Today I drilled and tapped all the remaining holes on the crank to M3 and drilled the centre to 6mm. 






I'll get on with the piston hopefully tomorrow. 

doubleboost:
Hi
Ross
Coming along very nicely :thumbup: :thumbup: :thumbup:
John

Stilldrillin:
Your collection of parts is gowing nicely Ross!  :clap:

Good luck with the piston. Take your time. Rather too tight, than too loose......  :thumbup:

David D

Ross:
Today I got around to machining the piston.


I forgot to take the camera down to the shed for this part!


I started off at one end and brought it down to the size of the bore. But I went undersized! Luckily I just flipped the workpiece over and did this same, but this times was careful to get a snug fit inside the bore.


Once I had got the piston head made I turned the Conrod down to size and drilled a hole at the bottom so it fits the crank.


Some photos of the piston:




And the fit into the bore.




I also buffed up the cylinder it's all shiny now.




After that I scavenged an m6 bolt. It was one of those that were only part threaded, and it would be perfect for my crankshaft. [/b][/size][/font]


I sawed the thread to size, then put it in the lathe and face it to length.





I was expecting to do a small cut to the diameter of the bolt, but I tested it with the crank first and it fit snugly so I've left it!




That's it for this weekend,

doubleboost:
Hi
Ross
It wont be long before it is a runner :drool: :drool: :drool: :drool:
John

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