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.

9 minutes ago, So not a Guru said:

The "Neck x X x" callouts are giving the width by depth dimensions of the grooves in the shaft. 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. The Chamfer callout gives the angle of the chamfer feature & the orthographic width of it.

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.

5 hours ago, crazy^millman said:

Basic math and this print was made this way to represent what you see in the real world. Everything you need to define the part is there.

5.06+.093=5.153 gives you the distance from the Shoulder to the end of the part. Detail A define the Groove against the should .093 Wide by .062 deep per side or .125 diametrically. The other one is 4.187 + .093 from the shoulder and it .125 wide x .062 deep per side or .125 diametrically.

Then that also helps you define the length of the thread.

5.06-4.187-.125=.748

Neck means relief or groove depending on what part of the country your from. Now model it Mastercam with the thread and post it up.

I just modeled a Fixture that has create date of 1972 with a revision date of 1973 on the print and you want talk about some missing dimensions on a print. It is a fixture for the old Shuttle engines. Still have the original tooling so we were able to white light scan it and pull the missing stuff.

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,

I'm new to blueprints,

1. I don't understand the "Neck.125X0 .062"  and how that relates to the basic math.   Neck .125X0 .062   is very strange to me.   I would love to know more about this.

2. "Neck ..093X .062"   is also very strange.   I would love to understand this.

Is there a web site that converts these measurements into metric easy to understand layman language?

Thank you Zeke, for circling the measurements in question.

Hello, crazy^millman.  I'm trying to learn.  I see where you got the measurement of "5.06."  But where did you get the information in the drawing to do basic math?  In other words, I do not see where you gathered the information in the drawing.

"5.06+.093=5.153 gives you the distance from the Shoulder to the end of the part. Detail A define the Groove against the should .093 Wide by .062 deep per side or .125 diametrically. The other one is 4.187 + .093 from the shoulder and it .125 wide x .062 deep per side or .125 diametrically."

I appreciate your help,

Awesome!  Thank you,  I did not know there was  right click customization feature.

Cheers,

Hello, I am trying to learn how to read blueprints. 

1. I am trying to figure out the measurements of the little gaps on the neck.  

2. The "5.06" measurement does not go all the way to the perpendicular washerface wall.

3. The 4.187 measurement assumes you know the distance of the little gap.

Thank you, nickbe and Thee Byte.   I now see the "Analyse Distance" in the Home tab.   

Cheers,

Sean

Thank you, gcode.  "select the entity and hit F4" works.   

What if there is no entity...What if I want to measure the negative space between entities?  Is there a tape measure of some kind?

In Mastercam 2021 demo,

1. Is there a way to measure the length of a line that is all ready drawn?

2. Is there a way to measure a radius of an arc?

3. Is there a way to measure the distance between two lines that have already been drawn?

Hello Daniel, I have been playing around with Mastercam Demo for a couple weeks.  This is what I have been doing.

And this one

Hello AHarrison1, I have a question, there were 2 examples in that project download for the "Mastercam 2021 Solids training."  Are those 2 projects the only projects in the Mastercam solids book?

In the "Store" is there a way to see pictures of the modeling projects in the "Mastercam 2021 Solids Training Tutorial" book?  

I just want to see "what kind of models" are being taught in the book. 

I'm not asking to see the tutorials, I know the actual tutorial can only be viewed if you buy the book.