Speed Modelling Challenge #27 Chair

Speed Modelling Challenge #27 Chair

Postby remus » Thu Jun 17, 2010 2:58 pm

Chairs

Theres a special treat for the winner of this round: a copy of SketchUp 7.1 for Architectural Visualization: Beginner's Guide by Robin de Jongh. A quality read if i say so myself!

The rules:
-30 mins max modelling time
-unlimited prep time (thinking, sketching, looking for pics etc. NO MODELLING!)
-I will ask people to judge the models on time taken to model, quality of the model and originality of the idea.
-Multiple entries are allowed, keep it sensible though.
-Please provide a wire frame shot of your model when you post.
-Sketchup output only (and as much as i know you love rendering your models, it would be appreciated if you could hold of posting them in the gallery until after the comp.)
-Any texturing should be done within the modelling time.

I'm going to be a little stricter about enforcing the rules as there's a prize, so make sure you read them carefully.

Comp closes at 6.00 pm on the 1st July.
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Re: Speed Modelling Challenge #27 Chair

Postby KarinaGM » Thu Jun 17, 2010 3:14 pm

Yay! sounds good
The rules are the same as always, right?
(gotta read them again...)
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Re: Speed Modelling Challenge #27 Chair

Postby remus » Thu Jun 17, 2010 3:29 pm

Yeah, same as ever.
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Re: Speed Modelling Challenge #27 Chair

Postby KXI System » Fri Jun 18, 2010 2:29 am

Oh Boy! Been some time since I did a speed model!

May I ask which version we will get? The paper or e-book copy? Or do we have a choice of either one?
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Re: Speed Modelling Challenge #27 Chair

Postby August » Fri Jun 18, 2010 4:46 am

I'm new to the speed modelling challenges. I've always considered myself a rather slow, plodding modeler, but something about this one intrigues me.

How big is the target?

Is the challenge to model exactly this chair? If so, is there a name for it so that we might find other views?

Or is the challenge to model a modernistic chair like this one with lots of curves but not necessarily this exact one?

Or any chair? A classic lathed and hand-carved rocking chair?

Is part of the judging based on how closely we stick to this exact photo or is it about what kind of challenge we set for ourselves with this as inspiration?

Thanks,
August
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Re: Speed Modelling Challenge #27 Chair

Postby Bryan K » Fri Jun 18, 2010 6:48 am

Can you provide some other views?
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Re: Speed Modelling Challenge #27 Chair

Postby Gaieus » Fri Jun 18, 2010 7:09 am

ecofeco wrote:Can you provide some other views?

Yo do not necessarily have to model this exact chair... It's just an illustration of what a chair is.
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Re: Speed Modelling Challenge #27 Chair

Postby remus » Fri Jun 18, 2010 7:21 am

As Gai said you can model any chair you like, i just included that pic to try and break up the wall of text a bit ;) Personally i judge entries partly on how well theyve used the time, how ambitious theyve been and of course how good the model is.

KXI, the prize is the ebook version.
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Re: Speed Modelling Challenge #27 Chair

Postby Bryan K » Fri Jun 18, 2010 8:45 am

Thank you.

Do we post here?
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Re: Speed Modelling Challenge #27 Chair

Postby remus » Fri Jun 18, 2010 11:03 am

yes.
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Re: Speed Modelling Challenge #27 Chair

Postby Bryan K » Fri Jun 18, 2010 5:34 pm

10 minutes. I'll probably submit more entries, but they are all going to be simple as I'm not that good or fast yet. (I really don't need the prize, but I do need the practice)

This is my original, but the others will be from references.

chair1.jpg


chair1wf.jpg
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Last edited by Bryan K on Sat Jun 19, 2010 12:04 am, edited 1 time in total.
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Re: Speed Modelling Challenge #27 Chair

Postby mike d » Fri Jun 18, 2010 11:00 pm

CHAIR 1.jpg
CHAIR WIRE FRAME.jpg

took me about 15 mins
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Re: Speed Modelling Challenge #27 Chair

Postby Rich O Brien » Sat Jun 19, 2010 12:17 am

Here's mine...wish i had more time

CD Chair ISO.jpg


CD Chair ISO with shadow.jpg


CD Chair Native with shadow 2.jpg


CD Chair Wireframe with shadow .jpg
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Re: Speed Modelling Challenge #27 Chair

Postby hobbnob » Sat Jun 19, 2010 1:51 pm

This was my first time entering this, so I'm certainly not going for the win. Spent ages looking for ideas, then realised what I was sitting on. . . Here is my entry, made in just over 25 minutes:


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Re: Speed Modelling Challenge #27 Chair

Postby Gaieus » Sat Jun 19, 2010 2:30 pm

Not a winning entry either...
:roll:

stool1.png

stool2.png

stool3.png


But at least it was really speedy (and low poly)!!!
:lol:
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Re: Speed Modelling Challenge #27 Chair

Postby thomthom » Sat Jun 19, 2010 3:05 pm

Wow Gaieus! What plugins did you use? :D
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Re: Speed Modelling Challenge #27 Chair

Postby Gaieus » Sat Jun 19, 2010 3:07 pm

Subdivide and Smooth
:oops:
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Re: Speed Modelling Challenge #27 Chair

Postby chrisglasier » Sat Jun 19, 2010 3:18 pm

Gaieus wrote:Subdivide and Smooth
:oops:


More like Skyhooks and Stiction by GIT :)
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Re: Speed Modelling Challenge #27 Chair

Postby dale » Sat Jun 19, 2010 5:37 pm

A contribution. 22 minutes, Mostly just pushpull, follow me, and copy and move and rotate. These challenges are always fun
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Re: Speed Modelling Challenge #27 Chair

Postby Dave R » Sat Jun 19, 2010 10:14 pm

Not an original design but it is faithful to the original. Time 14 minutes and 49 seconds. I'll have to add the wire frame image as it is on my other computer.





The near one in the second image is a child-sized version. Both are drawn so that a plan can be created to build them out of real wood.

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Last edited by Dave R on Fri Jun 25, 2010 11:20 am, edited 1 time in total.
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Re: Speed Modelling Challenge #27 Chair

Postby August » Sun Jun 20, 2010 9:21 am

Foo. I spent a good part of this afternoon looking for pictures of that chair. Here's one I found at The Museum of Modern Art. It looked like a good candidate for modelling by PhotoMatch.

MoMA - The Collection - Gerrit Rietveld. Red Blue Chair. c. 1923.jpg

In my research, I came across a description of the chair's mechanics that I have not been able to follow. The first part about the seat makes sense, but in the second part about the back and the two-way spring I'm lost.
The subtile mechanical principle of the chair is not so obvious.
Explanation: When a person sits in the chair the seat will transmit his weight to the vertical member which in its turn will transmit the load to the lower horizontal member, but when the load shifts to the chair's back the vertical member will stop and lean in the opposite direction. The movement are based on the side rail which acts like a two-way spring.
So the chair has a mechanical point too.


Does that part about "lean in the opposite direction" make sense to anyone? I suspect this is a translation from the Dutch, so there may be some "springiness" there as well.
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Re: Speed Modelling Challenge #27 Chair

Postby Horseman04 » Sun Jun 20, 2010 10:21 am

15 Minutes to Drag over to the Computer, 28 Minutes to make. :D

Chair.jpg

ChairWires.jpg
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Re: Speed Modelling Challenge #27 Chair

Postby Dave R » Sun Jun 20, 2010 11:31 am

August, that seems like a wordy way of saying that when a person sits in the chair, their weight will cause the lower front to back rails to sag and this will tend to pull the bottom of the legs in toward each other.

The chair frame is joined with dowels and only a few screws are used to attach the seat and back to the three cross members that contact them.

It would be a good practice piece for PhotoMatch although I didn't do that. A friend built the child-sized version from my drawings.
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Re: Speed Modelling Challenge #27 Chair

Postby August » Sun Jun 20, 2010 11:29 pm

Thanks Dave,

It's the "load on the back" part that has had me confused. But your note about "sag" and the original's "two-way spring" suggest to me that they are trying to say that a load on the back makes the horizontal rail bow upward. That would be the case for a load on the upper back, pivoting the lower back upward. I was looking at loads on the lower back and not getting anywhere.

Dave R wrote:... A friend built the child-sized version from my drawings.

In under 30 minutes?
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Re: Speed Modelling Challenge #27 Chair

Postby Dave R » Sun Jun 20, 2010 11:40 pm

I doubt it. She was using hand tools. :D
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Re: Speed Modelling Challenge #27 Chair

Postby August » Mon Jun 21, 2010 12:13 am

August wrote:... they are trying to say that a load on the back makes the horizontal rail bow upward.

The more I think about it, the more I think this is the right idea.

If you allow the original "lean the opposite direction" to be a mis-translation of the original Dutch that was more like "sag the opposite direction" it makes even more sense. I can see some translator with no grasp of Engineering deciding that "sag the opposite direction" made no sense and then substituting "lean" for "sag" instead of finding the more accurate "bow" -- because they didn't understand the subject.

Occam's Razor rules.
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Re: Speed Modelling Challenge #27 Chair

Postby Bryan K » Mon Jun 21, 2010 2:22 am

20 minutes

http://www.contemporaryfurniture.com/fu ... ern-chair/

toadstoolchair.jpg


toadstoolchair2.jpg
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Last edited by Bryan K on Mon Jun 21, 2010 11:38 am, edited 1 time in total.
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Re: Speed Modelling Challenge #27 Chair

Postby ely862me » Mon Jun 21, 2010 7:22 am

Cardboard chair-20 min
Mdf chair a.jpg

Mdf chair b.jpg













PS:Just got a bugsplat while ctrl rotate x3 :D..all gone :D
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Re: Speed Modelling Challenge #27 Chair

Postby KarinaGM » Mon Jun 21, 2010 11:41 am

Ely, that cardboard chair looks almost comfortable!

I made this model in 3 parts and was going fine but then I wasn't sure about what extrusion to use and time went out. I place here my entry and the first experiment that went obviously wrong :roll:

I took the reference from Emmanuel Laffon "eight" sofa.

8_a.jpg

8_b.jpg

8_c.jpg
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Re: Speed Modelling Challenge #27 Chair

Postby broomstick » Mon Jun 21, 2010 4:25 pm

karina your design is beautiful!

I hope to enter something this time :)
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