solid composed of archs

[johnfulwyler]

I am having difficulty creating a solid that has multiple archs as its upper edge. My main problem is drawing the arch that connects the left circular arch to the middle circular arch. Here is a picture of what I need to draw:
http://www.jcfcadimages.4t.com/images/arch_block.jpg
My initial thought was to create the left circle and the center circle, then somehow align a circle with a radius of 1 7/8 to the tangents of the two smaller circles (which would afterwards be trimmed as needed), then obviously mirror these lines. I was, however, unsuccesful. If any one can tell me how they would draw this, I'd greatly appreciate it.

Thanks,
JF

[gcp310]

draw the side face in 2d, then extrude it to the desired thickness,then use the fillet tool to round the edges.

G

[f700es]

try.....

Draw - Circle - Tan. Tan. Radius

That should get you there... good luck ;)

http://mars.walagata.com/w/f700es/3d-part.jpg

[johnfulwyler]

Thanks F700, thats just what I needed.

[f700es]

Thanks F700, thats just what I needed.

No problem. In fact that was the 1st time in 15 years of using AutoCAD that I used that command :oops:

TC