Time for another progress update. Lots of little pieces this time. The next parts to be made were the valve plate and valve chest cover. The blanks were glued together and then squared up. The four mounting holes were drilled and then the parts were separated. The port holes were then drilled in the valve plate.
Next up was the valve itself. This was made from a piece of brass off cut that was squared up. Then the pocket was milled out.
It was then flipped over and the slots were cut.
Next up is the valve rod. It was turned to dimension by turning down it down in .2 inch increments (it was to small for any of my centers) and then blended with some crocus cloth.
Then the intermediate section was threaded.
The part was moved to a collet block in the mill where the end was trimmed and the hole drilled.
The piece was parted off and put back into the collet block. Then the slot was cut in the mill.
Next up were the pack nuts. Hex stock was drilled, and turned to shape.
Then they were threaded and parted off. Next up was fabricating the eccentric strap. I started by drilling and reaming a piece of brass bar to the size of the eccentric.
Then the ring was parted off and notched to take the rod.
The rod was laid out and the end drilled.
The sides were then milled to a taper and the end rounded on the belt sander.
The two parts were silver soldered together and then pickled. Here is the result after some cleanup.
The last part for this update is the eccentric itself. I trued up the stock in the four jaw and drilled the center hole.
Then the offset was put in and the eccentric turned to fit the strap.
The eccentric was parted off and then drilled and tapped for a setscrew.
That completes this update. Till next time
Tony
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