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Technical Drawing

09/19/2016 5:58 AM

what is the difference between isometric and oblique drawing?

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#1

Re: technical drawing

09/19/2016 6:10 AM
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#2

Re: Technical Drawing

09/19/2016 8:49 AM

15°

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#3
In reply to #2

Re: Technical Drawing

09/19/2016 9:08 AM

Celcius or Fahrenheit?

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#4
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Re: Technical Drawing

09/19/2016 9:16 AM

A cabinet member would regard that as a cavalier outlook

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#6
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Re: Technical Drawing

09/19/2016 12:08 PM

Is your car not starting?

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#11
In reply to #2

Re: Technical Drawing

09/19/2016 4:12 PM

So THAT's the difference between a duck....

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#5

Re: Technical Drawing

09/19/2016 11:48 AM

You will find some information in this discussion previously posted to CR4:

http://cr4.globalspec.com/thread/12772/Why-two-types-of-drawings

There are a couple of posts marked as "good answers" that are a good place to start.

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#7

Re: Technical Drawing

09/19/2016 1:34 PM

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#8
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Re: Technical Drawing

09/19/2016 2:24 PM

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#9
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Re: Technical Drawing

09/19/2016 2:40 PM
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#10
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Re: Technical Drawing

09/19/2016 3:02 PM

Come on SE at least I uses drawings I knocked up while waiting for my meal to cook

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#12
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Re: Technical Drawing

09/19/2016 4:17 PM

Impressive...?

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#28
In reply to #9

Re: Technical Drawing

09/30/2016 4:23 AM

Can you share some of your tips for best drawing outcome??

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#29
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Re: Technical Drawing

09/30/2016 8:22 AM

Tips for best drawing outcome? Sure.

  • Use a T-Square to make sure the paper edges are parallel to the edges of the drawing table. This will allow you to use the T-square later to draw lines parallel to the paper edge.
  • Tape the paper down to a smooth, flat surface before starting to draw; tape all four corners. This will keep the paper wrinkle free, and keep it from shifting as you draw.
  • Practice drawing smooth curves and straight lines with your wrist lightly touching the paper. This will help you develop a steady drawing hand.
  • When drawing, it helps to wear a clean white cotton glove on your drawing hand, so your wrist will not smudge the drawn lines or leave skin oils on the paper.
  • Remember to use a T-square and drafting triangles to get precise angles in drawn lines.
  • When drawing the ink lines, remember to keep your hands clean and free of ink, so you do not leave permanent smudges on the drawing.
  • Make sure your technical pens have clean nibs, so they will draw clean, smooth lines.
  • DO NOT RUSH when drawing the ink lines, give the ink time to dry before placing a hand or drafting tool over the line.

Hope this helps.

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#30
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Re: Technical Drawing

09/30/2016 2:18 PM

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#13
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Re: Technical Drawing

09/19/2016 4:49 PM

I guess I love M.C. Escher too much. My brain can't stop flipping between what's in and what's out.

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#14
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Re: Technical Drawing

09/19/2016 4:56 PM

I remember in elementary school, looking at the textured ceiling and seeing craters instead of dimples. Then looking at the moon through a telescope I would see dimples rather than craters.

Wife always asks (rhetorically) "what is wrong with you?"

To which I simply have no retort or reply.

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#16
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Re: Technical Drawing

09/19/2016 9:41 PM

Your views are obliqued and not isometric?

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#19
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Re: Technical Drawing

09/20/2016 10:28 AM

Nailed it.

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#15
In reply to #13

Re: Technical Drawing

09/19/2016 5:11 PM

Me too. I still have a numbered and signed "Flatworms"; I once had a "Concave and Convex" that I traded up for a "House of Stairs", which was sort of stolen.

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#20
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Re: Technical Drawing

09/21/2016 5:07 AM

Just for you Fred

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#21
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Re: Technical Drawing

09/21/2016 7:22 AM

LOL

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#17

Re: Technical Drawing

09/20/2016 5:41 AM

Thank you very much for your answers, according to your, answers; isometric is a method of producing a pictorial view of an object, that is a vie which shows three faces of the object simultaneously. in isometric projection the projectors from the object to the projection plane are parallel and normal to the plane. In oblique parallel projection they are parallel but oblique to the plane and the object is positioned with the face parallel to the plane.

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#18

Re: Technical Drawing

09/20/2016 5:42 AM

Hi Benson

Oblique is a poor mans 3D drawing in which a front view is extended to 3D at 45 degrees. It is not true 3D but easier to draw. Isometric is better as it shows 3 sides in a more realistic arrangement at 30 degrees to the horizontal. It is still not what we actually see with our eyes. If we add perspective in which there are vanishing points the it becomes more realistic with either 2 point or 3 point perspective being most often used. This is because an objects dimensions seem to decrease in size as the distance away increases. As a guide in marking for GCSE drawings, views as in orthographic drawing gets you say 1 mark, then oblique 2 marks, isometric 3 marks, with perspective 4 or more marks ( numbers are just a guide). When a student displays the ability to do all of these that is the highest grade.

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#22
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Re: Technical Drawing

09/21/2016 8:30 AM

Another feature of isometric drawing is that distances on the page are consistent regardless of the line orientation ("iso-" same "-metric" measure) and all lines that are parallel on the object are parallel on the page, so a 1" by 4" by 9" rectangular solid will measure 1x4x9 no matter which edge is defined as 'vertical' on the drawing.

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#23
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Re: Technical Drawing

09/21/2016 9:36 AM

Hey, that's not fair. You're using linguistic etymology to explain the meaning of a concept. That's almost as evil using Google. The fact that polysyllabic terminology usually delineates itself should remain obfuscated to those incapable of divining relevance.

GA

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#24
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Re: Technical Drawing

09/21/2016 10:11 AM

Someone is obliviating, now aren't they?

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#25
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Re: Technical Drawing

09/21/2016 10:20 AM

I can't remember.

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#27
In reply to #23

Re: Technical Drawing

09/27/2016 8:13 AM

As I like to say 'Eschew Obfuscation."

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#26

Re: Technical Drawing

09/27/2016 4:29 AM

An oblique sketch puts more focus on the face or front of an object while an isometric sketch puts more focus on the edge of an object. To achieve this, oblique sketches are usually drawn using a 45 degree angle to render the 3rd dimension while isometric sketches are drawn using a 30 degree angle.

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