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Designing Darts - Part 1
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Karen - Tech Support
Posted 2011-11-28 9:00 AM (#79049)
Subject: Designing Darts - Part 1



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Location: Colorado Springs, CO

This Design Challenge is Darts.

Start with a Ball.  Any size.

Measure the Circumference and the distance from top to bottom (half the circumference).

Cut out a rectangle of cloth or paper to those measurements.  Tape the ends and slip over the ball.

The project is to make a fitted cover for the ball.

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Grandma C
Posted 2011-11-28 11:04 AM (#79050 - in reply to #79049)
Subject: RE: Designing Darts - Part 1


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do we need to add for seam allowances.
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Karen - Tech Support
Posted 2011-11-28 1:12 PM (#79051 - in reply to #79050)
Subject: RE: Designing Darts - Part 1



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Location: Colorado Springs, CO
No - I would just use take to hold it around the ball.  You could add a sa on the end and sew it, then slip it over the ball and start thinking about fitting it.
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Karen - Tech Support
Posted 2011-11-30 6:48 AM (#79067 - in reply to #79049)
Subject: RE: Designing Darts - Part 1



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Location: Colorado Springs, CO
Anyone try this?  If so, what did you find out about use or "arts" to fit the ball?
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Grandma C
Posted 2011-11-30 2:00 PM (#79074 - in reply to #79049)
Subject: RE: Designing Darts - Part 1


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I have had to be at my place of employment too much to try it. Perhaps over the weekend. I am very interested in doing this.
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SueC56
Posted 2011-11-30 2:06 PM (#79075 - in reply to #79074)
Subject: RE: Designing Darts - Part 1


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Same here, I'll try to get to it this weekend.  Looks interesting.
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LorIKC
Posted 2011-11-30 4:22 PM (#79076 - in reply to #79067)
Subject: RE: Designing Darts - Part 1



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I haven't done the exercise yet but the engineer in me tells me the following:
-More darts will yield a better fit.
-Curved darts will result in a better fit.

This is a guess but I think a pretty good one:
-If you close the darts to make flat pattern piece(s) you will end up with pieces that fit together like those on a baseball.

I have to try this to see how it works.

Lori
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EasilyAmewsed
Posted 2011-11-30 6:58 PM (#79077 - in reply to #79076)
Subject: RE: Designing Darts - Part 1


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Lori is pretty much right, although a better ref is the segmented beachball. You can pattern spheres using math and to some degree consolidate the 6 resulting pieces into 3 separate pieces w small darts. I did this when I was learning how to do spherical shapes for a plushie and it nearly made my head explode. < : )
As to the actual concept of darting, yeah, they tend to have a better fit when curved and distributed where the in's and out's of one's body are. My best frontal darts are ones sorta shaped like slim, upside down teardrops vs. the diamond shape of a basic draft since my most spherical part starts practically at the waistline.

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monique montreal
Posted 2011-11-30 8:26 PM (#79078 - in reply to #79067)
Subject: RE: Designing Darts - Part 1



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Karen,
I just finish the test, covered half the ball with equally curved darts:

circumference divided in 8 (circ. was 8"), the result 0 space at top o the ball and perfectly adjusted at half of the ball. It may means:
darts have to follow the form that we want to adjust; straight if the form is + or - straight and curved if the form is +or - round...Will follow the thread to see your conclusion.
Thanks karen, it is a very interessing thread, hope you will post some more.
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magenta
Posted 2011-12-01 3:16 AM (#79084 - in reply to #79049)
Subject: RE: Designing Darts - Part 1



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Will be trying this on the weekend. Do we have to put the darts in at this stage or just see what happens when we tape a rectangle of fabric round a ball?

Sarah
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Karen - Tech Support
Posted 2011-12-01 7:38 AM (#79087 - in reply to #79049)
Subject: RE: Designing Darts - Part 1



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Location: Colorado Springs, CO

Tape is fine.

I'll wait until after the weekend to post part 2.  With the Holidays we are all busy.

I am making dress-up animal costumes for Agnes and Oscar so busy too.

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Karen Maslowski
Posted 2011-12-01 10:27 AM (#79091 - in reply to #79077)
Subject: RE: Designing Darts - Part 1


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Regarding the segmented beachball:

All curved seams are actually darts of some kind, just cut open.

This took me a long time to understand, until I attended a patterndrafting class by Karen Howland. The light bulb went on!
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Brenda
Posted 2011-12-01 7:34 PM (#79096 - in reply to #79049)
Subject: RE: Designing Darts - Part 1



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I decided to try this tonight as I felt like having a brain challenge. I tried several methods which just wouldn't work for me but finally arrived at a solution that could be translated into a flat paper pattern to cut out fabric. I thought it would be nice to make Christmas fabric balls for my tree with stryofoam bases. Not actually sure how I would get the ball inside though...maybe leave a couple of darts open and glue/handstitch them later? Maybe even pin them. I'm sure the stryofoam wouldn't complain.

Here's what I did but with generalized numbers. If you actually have a ball, you would have to be more accurate.
1. Measured the circumferance of the ball (16")
2. Cut paper rectangle 16" long and 8" wide.
3. Folded paper in half LENGTHWISE (ie 16" side)
4. Opened paper and re-folded in half the other way. Repeat this 2 more times.
5. Marked the top and bottom centre point and also the fold line from the first fold so I could see it.
6. This is the tricky part! Draw a curved line from the first fold to the centre top on each side. Repeat these curved lines on the bottom half. Visually this will look a bit like a flat football or oval, I guess.
7. Now carefully cut each curved line but be very careful NOT TO CUT at the original first fold which is the fattest section. Think paper dolls!

When you open this you will have a flat piece of paper with 8 joined segments but 16 curved darts to be sewn to fit over the ball. You will also need to add seam allowances.

I'll be very interested in any easier and/or different solutions.

HUgs
Brenda
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EasilyAmewsed
Posted 2011-12-02 1:07 AM (#79101 - in reply to #79049)
Subject: RE: Designing Darts - Part 1


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I like Brenda's more kinetic method a LOT better than calculating.
Anyhoo, when I did the ball pattern it looked like this. Seamed, yes, but close enough I'd hope.



Edited by EasilyAmewsed 2011-12-02 1:11 AM




(SpherePatterning.jpg)



Attachments
----------------
Attachments SpherePatterning.jpg (32KB - 7 downloads)
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Karen - Tech Support
Posted 2011-12-02 8:33 AM (#79102 - in reply to #79049)
Subject: RE: Designing Darts - Part 1



Tech Support

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Location: Colorado Springs, CO

Good job.  Main thing I wanted you to see is to fit curves, you need darts.

I'll be at an AnitaGoodDesign Emproidery Party Fri and Sat so won't post the next part until Monday.

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