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Old 11-14-2004, 11:53 PM
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Basic 101: Class 4 - Drawing Cylindrical Objects - Old thread

Basic 101: Class 4

Drawing Cylindrical Objects


BEFORE you start this week’s lesson go to the following link

http://www.artgraphica.net/free-art-...g-ellipses.htm

This is this is Gavin Bann’s Guest Lecture on the subject of ellipses.


Here is the definition of an ellipse:

Main Entry: el·lipse
Pronunciation: i-'lips, e-
Function: noun
Etymology: Greek elleipsis
1 a : OVAL b : a closed plane curve generated by a point moving in such a way that the sums of its distances from two fixed points is a constant : a plane section of a right circular cone that is a closed curve

Source: Merriam-Webster online

NOW

Here is the definition of our subject, the cylinder

Main Entry: cyl·in·der
Pronunciation: 'si-l&n-d&r
Function: noun
Etymology: Middle French or Latin; Middle French cylindre, from Latin cylindrus, from Greek kylindros, from kylindein to roll; perhaps akin to Greek kyklos wheel -- more at WHEEL
1 a : the surface traced by a straight line moving parallel to a fixed straight line and intersecting a fixed planar closed curve b : the space bounded by a cylinder and two parallel planes cutting all its elements -- see VOLUME table
2 : a cylindrical body or space: as a : the turning chambered breech of a revolver b (1) : the piston chamber in an engine (2) : a chamber in a pump from which the piston expels the fluid c : any of various rotating members in a press (as a printing press); especially : one that impresses paper on an inked form d : a cylindrical clay object inscribed with cuneiform inscriptions
- cyl·in·dered /-d&rd/ adjective

Source: Merriam-Webster online
Good grief! All this time I thought that a cylinder was a tube. I guess the moral of the story is don’t get tangled up in too many technical points.

Figure 1 is a Slinky—A slinky, besides being fun for every girl and boy, is a wonderful illustration of a cylinder in action. It lifts and it separates, don’t you know and so for our purposes it is a versatile model.

EXERCISE 1. Draw the diagram of the Slinky as I did . Do as many of these as your sanity and your time will allow. When you draw this object think about the cylinder that it IS and the ellipse’ that are contained with in—if you think about it, every coil is an ellipse and all of the combined coils make up ONE cylinder

Now look at figure 2. Let’s draw a cylinder sans Slinky:

1. First, decide how big, mall or wide that you would like your cylinder to be.

2. Start drawing by roughing in the ellipses, top and bottom. I generally move the pencil in a counter clockwise manner.

3. Next sketch in the sides and now you have your cylinder. Sounds simple.

LEARN TO SEE, JUST LIKE THE CUBE, THE CYLINDERS THAT ARE IN THE OBJECTS THAT SURROUND YOU EVERYDAY.

Figure 3 is a demonstration of modifying a cylinder to make an object:

THE BOTTLE:

1. Start by drawing your cylinder like you did above.

2. Once you complete the cylinder draw the shape of the object WITHIN the cylinder. Shaping the neck and body of the bottle.

It is THAT simple. I have gone ahead and sketched out, using the cylinder, several other objects. Try your hand at them—then look around your house and see if you can find some more.

Here are the practice exercises (below) for this week. Several are drawings that I have completed but there are others that are just photos. Try to do at least ONE of these. If you happen to see a cube in the drawing—DRAW IT! Happy drawing!


PS: Below are links to the previous class and pre-class threads!
Basic 101:Pre-Class Assignments and FAQs--PLEASE READ
Basic 101:Class1 Class 2 Class 3


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Last edited by artdude : 11-15-2004 at 10:19 AM.
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Old 11-14-2004, 11:55 PM
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Re: Basic 101: Class 4

Here are the last images for you to try:
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Old 11-15-2004, 12:02 AM
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Re: Basic 101: Class 4

and finally, some more:
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Old 11-15-2004, 12:12 AM
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Re: Basic 101: Class 4

JayD
Love the lessons you are posting. Have delayed turning anything in as have a few health problems at present. Will get caught up soon as I can.
Thanks
Jackie
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Old 11-15-2004, 08:16 AM
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Re: Basic 101: Class 4

I remember having to draw hundreds of slinkys in school for handwriting class. (I'll bet they don't teach that anymore).

I'm sitting here reading about Class 4 with the remains of my breakfast sitting nearby - an empty Slim-Fast can. :-) It's pretty sad when you have to drink Slim-Fast to make weight at Weight Watchers.

Michelle H.
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Old 11-15-2004, 08:33 AM
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Re: Basic 101: Class 4

Slinkies are kool !!

A couple of links for tutorials on drawing ellipses
One, is the link JayD has already posted for us, Guest Lecture by Gavin Banns,
and the other link for a simple and clear tutorial on drawing ellipses

Enjoy !

Regards
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Last edited by Jet : 11-15-2004 at 08:37 AM.
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Old 11-15-2004, 09:54 AM
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Re: Basic 101: Class 4

Thank you JayD,

I will add ellipses to the cube painting I am doing

Will post when completed

Thank you for the Interesting info on the origins of the word ellipses

Regards
Lisa
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Old 11-15-2004, 10:18 AM
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Re: Basic 101: Class 4

That slinky practice, brought some memories....
... reminiscings of slinky racing !!

Regards
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Last edited by Jet : 11-15-2004 at 10:26 AM.
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Old 11-15-2004, 10:23 AM
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Re: Basic 101: Class 4

Believe it or not--I have plastic rainbow colored slinkys that we give out to child support officers at conventions. They are rainbow colored and say Fairfax Identity Laboratories on them. Very popular--I hold mine in the palm of my hand and shoot it out at my dog--he loves to chase after it. Slinky's are one of the coolest toys every invented!
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Old 11-15-2004, 12:14 PM
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Re: Basic 101: Class 4

Quote:
Originally Posted by JayD
Believe it or not--I have plastic rainbow colored slinkys that we give out to child support officers at conventions. They are rainbow colored and say Fairfax Identity Laboratories on them. Very popular--I hold mine in the palm of my hand and shoot it out at my dog--he loves to chase after it. Slinky's are one of the coolest toys every invented!

I agree with you JayD, I used to love to play with them. The glass with the red liquid and the cubes is sooooo cool and drawing the slinkies will help me loosen up for the cat.

Thank you JayD!!!
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Old 11-15-2004, 12:36 PM
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Re: Basic 101: Class 4

I think the slinkys may just take some practice. Mine are resembling tornados!

Judi
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Old 11-15-2004, 01:00 PM
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Re: Basic 101: Class 4

I promise to draw some slinkys later, but right now this was sitting by my computer looking just like one of those cylinders we are supposed to draw. I wish I were drawing a big pot of spaghetti instead.

Michelle

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Old 11-15-2004, 01:02 PM
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Re: Basic 101: Class 4

Nice Slim-Fast Can Michelle!

Judi
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Old 11-15-2004, 02:05 PM
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Re: Basic 101: Class 4

Good Morning,

Once again, Thank you!! Jayd, Looking forward to the lesson.

Quick question; line A B and Line C D are the same width, but somehow I have ended up with more of a cone - not a cylinder..?? (or is it supposed to look like that?)the horizon line is quite low. I hope this shows up on the scan.

thankyou ,
gina
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Old 11-15-2004, 02:50 PM
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Re: Basic 101: Class 4

What am I looking at here? I am thinking you are trying to draw a cylinder in one point perspective. If so is there a reference to what you are trying to draw?
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