Found the two bottom edges, you mentioned. I updated the model. Thank you so much for all your help, Crazy^Millman.

Thanks for keeping me honest, crazy^millman. Here is the fix.

You mean these edges?

The demo of Mastercam does not do tool paths. So I just punched a hole with a diameter of .375 and a depth of 0.875. Thank you for all your help "Crazy^millman", "So not a Guru", and "Rekd." I learned a lot. Any suggestions on a new free blueprint to model and learn more? Cheers,

So not a Guru, thank you for the tip, "The .375-16UNC callout is the SAE thread size in diameter & threads per inch the .875 following the depth symbol is the depth that the hole is tapped to." I'm going to start learning that, today.

Thank you, Rekd and Crazy^millman. I hope to get the Solid work done, by tomorrow. Thank you all for helping understand this blue print. Gotta find another challenging blueprint after this one.

Thank you, now I'll try to understand your explanation of R .312. Thank you, again.

I just drew a tangent line connecting the two entities. Is this correct? The drawing looks like there is a slight arc where they meet in the middle. I used a lline.

I'm try to understand how the bottom R 1.875 connects to the top R .750. 1. Thank you for explaining how to find the center of the R 1.875. 2. I now see where the R 1.875 starts and ends. 3. How did you figure out the slight tangent arc coming off the R .750 that connects to the R 1.875 on the bottom? Thank you again for helping me understand this blueprint.

Thank you, Crazy^millman. I'm a newby, Thank you so much for helping a "stranger" understand how to interpret this blue print. May the divine light shine on you, always.

Good Lord, that was an intense 10th grade machine shop class.

In Mastercam, how would I figure out these two radii? I had two assumptions that did not seem to work out. Assumption 1 : I assume I would need another entity to create an arc with the proper radius. Assumption 2 : I assume I would need a pivot point to draw a circle then remove the unwanted part of the circle to get the arc. I'm learning as I throw myself into this blueprint I found on the internet. Thank you all for your help.

I don't quit understand yet, but I'm going to learn about thread size and diameter. Thank you "So not a Guru." This blueprint it leading me into new territory. Ha ha.

I just now understood what you wrote, Crazy^millman. Thank you, so much. That took a long time to sink into my head. You wrote it so well, I don't know why it took me so long understand. Many thanks to you. Cheers,

On the internet, where would I go to learn how to interpret these annotations. I don't even know the vocabulary for these annotations. Cheers,