[solved] Correct way to make this Arc

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slyde
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[solved] Correct way to make this Arc

Post by slyde » Sun Dec 10, 2017 2:43 pm

Hi Forum:

I came across some CAD exercises the other day. Being new to CAD, this made me happy. But last night one of them got me. Last piece of the puzzle too! It was a 20 degrees radius arc. I tried all of the arc tools and cldnt make it work. What I ended up doing was making a 20 degrees radius circle and eyeballing it in place, then trimming it. And that's not the way to do it. But I can't figure out how to achieve this arc.

Here's a pic of the exercise, followed by what I did.
Screenshot from 2017-12-09 23-02-15.png
Screenshot from 2017-12-09 23-02-15.png (185.38 KiB) Viewed 1185 times
Screenshot from 2017-12-10 07-45-46.png
Screenshot from 2017-12-10 07-45-46.png (16.33 KiB) Viewed 1183 times
I'd appreciate someone showing me how to draw in this arc the right way. Thanks.

Slyde
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ex-5.dxf
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Last edited by slyde on Sun Dec 10, 2017 3:49 pm, edited 1 time in total.
Look! It's a bird. No! It's a plane! NO! It's QCAD hotkeys...faster than a possum falling out of a tree!!

OS: Linux Mint 18.3 Sylvia [64-bit]
QCAD Pro 3.19.2.0 [64-bit]

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Clive
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Re: Correct way to make this Arc

Post by Clive » Sun Dec 10, 2017 3:28 pm

2 Tangents and Radius

Always look and work with all the geometry information given, in this case circles.

Run the tool and choose the correct circle you need, then break out/trim to suit.
2 Tangents and Radius.jpg
2 Tangents and Radius.jpg (52.99 KiB) Viewed 1179 times
For the best support please state your operating system, QCAD version and add any supporting DXF/DWG files, screenshots etc...

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slyde
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Location: Turnip City, Texas

Re: Correct way to make this Arc

Post by slyde » Sun Dec 10, 2017 3:49 pm

Thank you, Clive. Next cup of coffee's on me :-)
Screenshot from 2017-12-10 08-47-33.png
Screenshot from 2017-12-10 08-47-33.png (212.15 KiB) Viewed 1173 times
Slyde
Look! It's a bird. No! It's a plane! NO! It's QCAD hotkeys...faster than a possum falling out of a tree!!

OS: Linux Mint 18.3 Sylvia [64-bit]
QCAD Pro 3.19.2.0 [64-bit]

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Clive
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Joined: Thu Aug 25, 2011 9:28 pm
Location: UK

Re: [solved] Correct way to make this Arc

Post by Clive » Sun Dec 10, 2017 4:05 pm

Thanks Slyde.

Try these when you have time.
EXERCISE 1.jpg
EXERCISE 1.jpg (88.63 KiB) Viewed 1170 times
EXERCISE 2.jpg
EXERCISE 2.jpg (111.38 KiB) Viewed 1170 times
EXERCISE 3.jpg
EXERCISE 3.jpg (84.33 KiB) Viewed 1170 times
EXERCISE 4.jpg
EXERCISE 4.jpg (118.48 KiB) Viewed 1170 times
For the best support please state your operating system, QCAD version and add any supporting DXF/DWG files, screenshots etc...

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