At first it was pretty easy to fabricate this part. Once I got to the corners though, the challenge really began. It all came together well. Gonna make an oil filler cap eventually.
Every form and cut is done by hand and measured roughly off of the actual part. Had to use a wooden dowl for the breather tube since I did not have a tube that size and did not want to make one by rolling thin cardboard sheet.
Enjoy the madness of this build in my other entries. More to follow.