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(moved) lens gear

by MarcusWolschon, published

(moved) lens gear by MarcusWolschon May 20, 2011

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Summary

THIS DESIGN HAS BEEN MOVED TO YOUMAGINE:
https://www.youmagine.com/designs/labeled-lensgear-set-for-geared-follow-focus

Reasons:
http://marcuswolschon.blogspot.de/2014/01/leaving-thingiverse.html

This is a lens gear for a 65mm lens to use with a follow focus.
Adapting this to smaller lenses should be trivial.

0.8mm pitch, 97 teeth to the full circle.
I tested these to be compatible with industry standard follow focus equipment of the same pitch.

(These gears are sold for obscene prices, so I printed my own.)

blog post:
http://marcuswolschon.blogspot.com/2011/05/3d-printed-geared-follow-focus.html

video in action:
http://youtu.be/bRS5ZIMN15A

Update:
To make construction with this part easier, I also added the counter-gear for it.
Ready with an M8 trapped nut and tapering to make inserting nut and shaft easier.
I choose a very thick M8 shaft to allow cheap and readily available 608 skateboard-bearings to be used.
(The rounding between trapped nut and gear is to increase strength.)

License is CC-BY-NC-SA
So you may make one yourself and improve the design but not sell the design or made parts and always give attribution.

Instructions

Easy to print.
For a Thing-o-Matic disable the outline -plugin to not interfere with the bolts of the automated build platform.

At 32mm/s and 0.4mm layers this takes about 45min to print.

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Any chance you'll be making lens gears for other lenses?

Like...this?

http://www.thingiverse.com/thing:10121http://www.thingiverse.com/thi...

btw, it's fully parametric.
You can make any size you need.
The only limit is the NC-clause I choose to use in Creative Commons.

(moved) labeled lensgear-set for Geared Follow Focus

technical drawing, video, photos, renderings, instructions, tips for specific printers

... you really go to a great length to describe your designs! :)

To make construction with this part easier, I also added the counter-gear for it.

Ready with an M8 trapped nut and tapering to make inserting nut and shaft easier.

I choose a very thing M8 shaft to allow cheap and readily available 608 skateboard-bearings to be used.

...added more photos and a video

"For a Thing-o-Matic disable the rectangle around your build to not interfere with the bolts of the automated build platform."

You mean to say disable the outline plugin in Skeinforge.

Sorry, just trying to make sure others know exactly what we mean.

...updated

You've got serious guts to print precision parts like this on an ABP. Most of us gave up and went HBP due to warpage and wrinkles in the belt. You print does look pretty good, except the slight warp at the arms for the tension screws.

Actually it's my first non-test print on the TOM.

However I'm operating and improving a RepMan for years now.

I guess I can still lower the temperatures some more and introduce the usual structural changes to reduce warping some more.

Correct.

Skeinfroge was just running when I wrote it, so I could not look up what the plugin calls itself.

Gotta love 3D printing for specialized parts like this. :-)

Here Here! I think this sort of design upsets the economics of niche markets. that could be good or bad depending on which side of the equation you so happen to be on. Good for 3D printer manufacturers, and the ancillary consumables suppliers. Bad for the small company that tries to make money in a highly specialized field.

Well, these(many) not-so-small companies sell the gears for 80eur/piece and more (actually 80eur for a cheap HongKong -remake) and there's no patent preventing me from designing a replacement...

I do.

I'm on the consumer -side of the equation and want to have a follow-focus on my small camera.

Not a niche that would be interesting to supply for any of these large movie-equipment-manufacturers.

Yah, I forgot that third side of the equation. The big company that is charging exhorbitant amounts of money for something they get very cheaply, because they have a captive audience.

don't get me wrong, I like changing the equation. I truly believe it's the way things should be done. For those items that are easily produced locally, they should be produced locally. Saves transport, saves the planet.

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