Harmonograph part 1

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Bob Jr
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Harmonograph part 1

Post by Bob Jr »

When I visit a children’s museum it’s fun to see which activities have the longest lines. The Harmonograph is always popular.
I wanted to make a version of this device in order to draw people to my display at craft sales.
This is to be for children to use while I sell my products to their parents.
This is the first part of a small series of steps I took to make a Harmonograph.
This is what a Harmonograph can draw by using the motion from two pendulums, and step one of my project, the table top:
Bob
Step 2 is coming right up.
Attachments
11.jpg
-2.jpg
-1.jpg
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

Step 2
The gimbal supports[/attachment]
1.JPG
Attachments
2.JPG
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

part 3
The gimbal ring drilling fixture:
2.1.jpg
2.2.jpg
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

The Gimbal top and gimbal assembly:
3.JPG
4.jpg
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

The platten to support the drawing paper:
5.JPG
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

Harmonograph pendulum weights:
Before adding lead and sealing it with epoxy.
Then installed.
6.jpg
6.1.jpg
6.2.jpg
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

The Pen support.
7.jpg
8.jpg
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

The finished assembly and drawing example.
This thing works!
I can't wait for the next craft fair.
9.jpg
10.jpg
Bob
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PaulRowntree
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Re: Harmonograph part 1

Post by PaulRowntree »

Bob, you are a genius. Is the pen spring loaded?
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Re: Harmonograph part 1

Post by ozymax »

Bob.
I had never heard of a Harmonograph before now.
That is very cool and a nice design.
I think you'll have just as many parents playing with it and you'll be taking orders for them.

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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

PaulRowntree wrote:Bob, you are a genius. Is the pen spring loaded?
"Genius" is probably stretching it a little. But thanks.
The pen is gravity loaded.
Bob
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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

ozymax wrote:Bob.
I had never heard of a Harmonograph before now.
That is very cool and a nice design.
I think you'll have just as many parents playing with it and you'll be taking orders for them.
I hope it's the bait as I hook them with my products.
Thanks,
Bob
"Be accurate."
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martin54
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Re: Harmonograph part 1

Post by martin54 »

Looks great, can see it attracting people, so lets hope that leads to sales for you. I'd never heard of a harmonograph either, well not strictly speaking true, I knew of them but didn't have a clue what they were called, now I know so thanks Bob.

So did you manufacture all the bits yourself or have you had to buy some of the parts??

Looks like the spell checker has never heard of one either :lol: :lol: :lol:

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Bob Jr
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Re: Harmonograph part 1

Post by Bob Jr »

Thanks Martin,
All parts were designed using VCarve Pro, and machined on my Shark. Some were Delrin, others were HDPE. I had no special reasons for the types of plastic I chose. It was just what I had in the shop.
Bob
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zeeway
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Re: Harmonograph part 1

Post by zeeway »

Weird and wonderful. Never know what we will learn on this site. Thanks, Bob.

Angie

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