Clothes Pin

ZooHead

ZooHead

0
This is a model of an SLIBB Clothes Pin that I saw on line for the first time today.
I liked the way this object looked so I thought it would be great project.

Clothes Pin 02.jpg
 
I built this in two pieces, the body and the spring.
The spring was made with Spline/Sweep and Symmetry.

cpsa_intro.gif
 
Now I can't resist trying to animate this.

I can animate the body of the clothes pin with a simple rotation with three keyframes.
The spring is a Spline/Sweep so I have to manually keyframe 30 frames to match the body motion.

Dense Keys.jpg
 
Here's 9 frames of 60 from a 2 second clip.
I'm not loving the way the spring thing moves.

It's not bad but I was hoping it would look better.
Instead of redoing the 30 keyframes of the spline
animation I'll make another version of the
spring thing with Bend Modifiers.

clothe_pin_spline_animate.gif
 
The first thing to understand: You cannot unbend something with the Bend Modifier. (n)

I can use the spline I already made as a template to guide me.

sprinbend.gif
 
The hard part is keeping the contact point together.
I made all tangents linear and some slight animated
position changes to the clothes pin body.

With the Bend Modifiers, it's only one keyframe
per BM to adjust, and I only keyed 2 of them.

This one looks better so without seeing the actual objects motion I'm happy with this.

clothes_pin_bend_animate.gif
 
The original clothes pin has some teeth which I have avoided making until now.

Now there is no more left right symmetry and now I have
two objects for the body of the clothes pin instead of one.

Clothes Pin teeth.jpg
 
Apparently these clothes pins are designed to open further than the common
wooden clothes pins in order to accommodate thicker materials like knitted stuff.

Since the jaws are not parallel as soon as you open the clothes pin,
I thought of a design change that might give a more gentle "pinch".

Clothes Pin alt teeth.jpg
 
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