Hi everyone
The next substantial part for the engine is the rear part of the frame.
I started by squaring up the stock.
Then the step on the rear end of the engine was milled square at first, leaving some stock in the corner to mill the radius.
Milling the radius using a ball nose endmill.
Then the part was tilted over to mill the angled face, trying to hit the tangent of the radius
In the same set up the cutout for the big end is milled.
The cut out is a little deeper than the wall thickness will be.
Roughing out the pillow block. The pocket for the fixing plate in the bottom was milled before.
Finishing the pillow block with an end mill with a radius.
Same thing on the other side.
Some more stock is left for the camshaft.
2nd side finished the radius on top was milled using a radius cutter.
Starting the deep pocket on the inside.
The pocket ist milled vertical first, also leaving some stock for the corner radii.
For the finishing cuts the head of the mill was tilted over to reach all the way in the corner.
Taking light cuts, I got away without chatter.
Test fit
Then the upper halves of the bearing blocks were installed and the bores for the bearings milled.
Family shot.
Thank you for following along.
Plani