Yea, I've been a little busy. Seems like I just can't get enough done. But at least the power plant is starting to take shape. Here the cylinders are on a turn table and the excess stock is being milled off. Yes, I realize that the endmill is sticking out of the collet way too far, but since I didn't have much of a choice, one must make due. The cylinders started off as a 4 inch round stock, the bore was machined in on the lathe and then the three flat sides milled on. I did use a cobb style rougher mill to remove most of the material.
You can also see the steam ports. The plans called for one hole, about .050 larger than the one I used. I could just see that not allowing enough steam in or out of the cylinders.
