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curtie 
Groupie
Joined: 06.Jun.2013
Location: South Africa
Using: Autocad 2013
Status: Offline
Points: 39
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 Topic: Autocad 2013
Posted: 19.Jun.2013 at 07:20 |
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We learn everyday, even if its from newbies. I have another drawing that am strugling with, will upload the image tonight
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sean
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philippe JOSEPH
Senior Member
Joined: 14.Mar.2011
Location: France
Using: AutoCAD Mechanical 2017
Status: Offline
Points: 1493
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Posted: 19.Jun.2013 at 07:14 |
Hello Curtie, now it's me learning from you.
That fillet command working with the ellipses is new for me and my method with the offset + radius command was no good ( or it was the only option with the older AutoCAD releases that I use to have from 1995 : R13 , 2000 , 2008 and now 2012 ).
Kent was also wright to tell us about his lisp program for offseted ellipses, I will try this.
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Kent Cooper
Senior Member
Joined: 12.Mar.2013
Location: United States
Using: AutoCAD2020, 2023
Status: Offline
Points: 686
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Posted: 18.Jun.2013 at 21:07 |
philippe JOSEPH wrote:
....
I had to use the UCS command to draw correctly the ellipses ( each one individually and not the second with the offset command to have 2 real ellipses ).
....
You can also do that by changing the SNAPBASE and SNAPANG System Variables, without changing the UCS.
And if you want to Offset an Ellipse and get a true Ellipse as a result, with its quadrant points at the offset distance from the initial Ellipse's quadrant points [the 27 in this case], check out:
[The resulting Ellipse's distance from the initial Ellipse will vary at places other than the quadrant points, which is why regular Offset produces a Spline instead of another Ellipse. So don't use two Ellipses if that matters.]
[Also, pardon my error in my previous post about the TTR option in Circle.... But the Fillet approach does work nicely.]
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Kent Cooper
Senior Member
Joined: 12.Mar.2013
Location: United States
Using: AutoCAD2020, 2023
Status: Offline
Points: 686
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Posted: 18.Jun.2013 at 20:55 |
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You can also use the Circle command and its Tangent-Tangent-Radius option to get those R34 & R45 arcs, though you'd then need to Trim away the portion of each Circle that you don't need.
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curtie
Groupie
Joined: 06.Jun.2013
Location: South Africa
Using: Autocad 2013
Status: Offline
Points: 39
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Posted: 18.Jun.2013 at 18:55 |
Hi philippe joseph, how are you doing. I finally figured out a way to get R34 and R45. I use the fillet command then select radius then type in 34 and touch the horizontal line, then touch the ellipse line and its done. I do the same for the opposite side. I want to thank you for your help, I really learnt some things from you. 
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sean
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philippe JOSEPH
Senior Member
Joined: 14.Mar.2011
Location: France
Using: AutoCAD Mechanical 2017
Status: Offline
Points: 1493
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Posted: 10.Jun.2013 at 07:04 |
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No curtie, you can offset also a circle, an arc an ellipse and that's what I did to get the centers of the the radius R34 and R45 and then draw a circle R34 and R45 to be trimmed on the ellipses and lines.
Edited by philippe JOSEPH - 10.Jun.2013 at 08:44
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curtie
Groupie
Joined: 06.Jun.2013
Location: South Africa
Using: Autocad 2013
Status: Offline
Points: 39
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Posted: 09.Jun.2013 at 12:36 |
Hi guys, I seem to be coming along well on the drawing so far. I'm just abit confused about philippe joseph coment about offsetting radius R34 and R45. Normaly when you offset u use a existing line to offset from.
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sean
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heinsite
Senior Member
Joined: 05.Feb.2009
Location: United States
Using: AutoCAD 2014
Status: Offline
Points: 640
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Posted: 09.Jun.2013 at 11:26 |
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That's certainly one way. But an easier way would be to select the X-Y axis symbol in the lower left corner of the model space screen and drag it to your drawing and reset the axes to the angle you need. This is another way to reset the UCS but allows you to do so without having to know the angle.
When you're all done, simply type UCS on the command line and select World to reset it.
Dave.
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Dave Hein, P.E.
Hawaii District Engineer
Kona International Airport
AutoCAD Certified Professional
Autodesk Expert Elite
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curtie
Groupie
Joined: 06.Jun.2013
Location: South Africa
Using: Autocad 2013
Status: Offline
Points: 39
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Posted: 07.Jun.2013 at 21:09 |
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I tried the UCS command now and this what I did, I typed UCS- enter then Z- enter Rotation Angle i typed 30. is that correct.
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sean
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curtie
Groupie
Joined: 06.Jun.2013
Location: South Africa
Using: Autocad 2013
Status: Offline
Points: 39
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Posted: 07.Jun.2013 at 19:16 |
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Thank you for the quick reply.
Yes it is a paper version and I have to draw it in autocad. I will try it this weekend.
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sean
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