Help with drawing

[UCAssistantCAD]

Hey guys, so I am new to AutoCad and am willingly attempting to learn it by myself!

A little insider, I work as an assistant in a tech drawing class at NYU. The catch is everyone in the class is working on AutoCad which I have little to no experience in. The job doesn't require me to know this...but, I might aswell for the future!

I've been working on one of these design's off a book and was wondering if anyone could guide me through a few thing's, I do know a few basic commands like trim, line, circle, array etc..

Here is the drawing I am trying to duplicate.


Here is what I came up with on the Geneva cam.



^ Above I circled what I am having a problem with. I came seem to get the notch part correct. It say's that the notch is 6.50 x 3.25 and assuming that is L x W that's what I come up with using the line command. I don't how to close it properly with the circle and also it looks a little funky, what am I doing wrong?

[Tiger]

First, how to add images to your post (without using links that make your posts get moderated...)

Second, hi

third, your problem.

Try the command REGEN first, that updates your display.

I see two ways to solve your issue, and what is the right one depends on how the assignment looks. Either you use MOVE and move the notch so that it intersects with your circle. Make sure that you have OSNAP (particulary ENDpoint and APParent intersection) on. Snap to the Endpoint of the notch when you are asked for Basepoint and then slowly move your cursor downwards toward the circle and you should see the Apparent Intersection OSnap.

The other way is to use the EXTEND command and extend the lines to the circle. This makes the lines slightly longer though, so like I said, depending on what the assigment says (what is actually measured), this might be wrong.

[UCAssistantCAD]

Hmm well I accidentally added edited in a picture like the first time before I read your comment so it went back to being moderated I guess. I still can't seem to do it. THe apparent intersection osnap doesn't come up :/ I would use extend but this has to be the actual size. 6.50 x 3.25

[Tiger]

I'll try and explain a bit more,

Start the command Move.
you will see the prompt Select objects: at the commandline. Highlight your notch and hit enter
At the prompt Specify base point: select the end-point of the notch. If you don't see the OSNAP type END and hit enter and it should come up.
At the prompt Specify second point: type APP and hit enter. Now select the line of your notch and then mouse over the circle and the Appenrent Intersection osnap should come up, when it does, just click and it should snap to the correct place.

[ReMark]

Your drawing doesn't agree with the posted image. The notch you created is tall and narrow while the notch in the diagram is short and wide.

See post #12 of this thread.

http://www.cadtutor.net/forum/showth...se-up.../page2

[CyberAngel]

Here's a simple way to make your notch. Use the Offset command, give it a distance of 3.25, select the central axis, offset it left, select it again, offset it right. That gives you the sides.

Draw a horizontal line from the intersection of an offset line (either one) with the circle to the same point on the other line. This is a temporary line. Offset it 3.25 to the top side. That gives you the top. Erase the temporary line.

You can use Trim or Fillet (radius zero) to finish off the sides of the notch.

[UCAssistantCAD]

Thank's SO much guys. Now I am not sure how to make the curves or archs...

This is where am I at:
http://i49.tinypic.com/21nqo8y.png

Also tiger, I am not getting the option to add pictures from computer when I click insert image:

[UCAssistantCAD]

Hey tiger, it wont let me insert an image straight from my desktop. Only give's me the option to insert an image by a URL. Anyways, so thank you so much guy's I got the notch part down! Now can someone help me with the curve's and archs? Im not sure how to do that...picture's would help TONS! Thank you!!

[ReMark]

You have the information you need right in the drawing except that the "73" should be a radius and not a diameter. The other two pieces of information you need about both radii as well: 92 and 32.

[UCAssistantCAD]

Yes I figured that out..just a error in the book. How can I make that U shape? I am confused on that part..