Okay, got the timing cover base machined tonight.
The material is faced and the dowel pin holes are drilled along with 2 bolt holes to hold the work piece down. Sub plate is then faced and dowel pins drilled and pressed into the plate to locate the timing cover for machining.
Part is then faced and profile roughed out with a insert hogging mill.
Name: timing machined 1.JPG Views: 399 Size: 130.5 KBName: timing machined 2.JPG Views: 386 Size: 130.0 KB
It's then finished with an endmill on the profile and the cover recess is machined in.
Name: timing machined 3.JPG Views: 386 Size: 113.5 KB
All the mounting holes are now drilled and the lowers are tapped for the cover. Bolts are now put in the mounting holes and tightened so the part doesn't move when machining out the inside profile.
Name: timing machined 4.JPG Views: 397 Size: 100.9 KB
Inside profile is machined
Name: timing machined 5.JPG Views: 376 Size: 123.2 KB
And 1 finished timing cover base.
Name: timing machined 6.JPG Views: 404 Size: 120.7 KB