Thank you everyone for your support and compliments!
First off, my apologies for not having any great photos of the wax master for the cylinder head, I was about to head to the airport for a business trip when this arrived and wanted to get it sent to the casters as soon as possible. I digress.
Major thank you to my friend Daniel (TheSilentChamber) who took up the challenge of machining the cylinder head out of jewelers wax on his 5-axis CNC mill. The resolution and quality of this master is incredible - almost smooth as glass. As you can see, there is some sprue out head for casting purposes
Matchstick for reference.
Daniel did a phenomenal job machining this piece, down to every detail.
I sent the master off to be cast in brass. (This is a little out of sequence since I had the head cast before the engine block.) When the casters received the master, they called to tell me it was one of the most complex pieces they had ever tried to cast in brass. The result was phenomenal.
Once I cleaned the cylinder head up and machined the faces true, I used CA glue to temporarily attach it to the engine block. By gluing the head to the block directly after drilling the head stud holes, I could ensure the head stud holes would be drilled in the correct location relative to the block.
Here I am machining the seats for the head stud nuts using a .065" (1.65mm) end mill. The clearance holes were then drilled with a .040" (1.0mm) drill bit.
Thanks for following! Next I will get into some aluminum machining for various parts.