I had almost 8 hours in the workshop today. The base plate is progressing.
Sheet 1 of 3
Milling the main bearing housing slots. Using a 14mm HSS end cutter. Ended up blunt. There must be some embedded casting sand still
Then I spent an hour or so painting the machined surfaces with marking blue, and marking reference points and edges.
Using a Knu vice to cramp the base plate to and angle plate, and a height gauge to mark the reference lines
Top view of the marking out lines
After machining the main bearing housings, the big end slots and the eccentric slots.