Step 3: The easy way

So how.
1. the shape of the teeth is simplified to be half a circle
<p>Thanks for sharing! If you need PDFs with technical documentation see our <a href="http://www.varvel.com/en/download/catalogues" rel="nofollow">gearboxes catalog</a> or get in touch for CAD models!</p>
<p>This is great, thanks! I will try this design on my 3d printer. I am trying to use gears to help kids in 6th grade understand ratios and proportions with a hands on application. Love that it includes a lot of circle calculations. Any suggestions on simple applications of these gears?</p>
<p>You could always make a simple drive train, using about 2 big gears and 2 small gears to make a slow input into a faster output.</p>
<p>Great instructions!</p>
<p>These are brilliant and not that hard once you understand it</p>
<p>That's really cool</p>
<p>I got the program Gearotic and it has changed the way how I draw gears it has made it so simple, Check it out.</p>
if making gears is too difficult, you can use sprockets like I made here:<br>http://www.instructables.com/id/simple-wooden-sprocket-without-cnc-machines/<br><br>but good work rickharris
I'm intersted in making gears and I've read somewhere that gears are the hardest mechanical components to make without proper tools.Your instructable is good and teaching from this point of view.
Thanks - To make correctly shaped gears is a little more complicated - there are lots of on line calculators and explanations of why they are that shape.<br><br>This is a way to make gears at home that for low pressure system work quite well. <br><br>large size you can make with a drill and round file, smaller sizes really need some kind of machine to cut them. A laser cutter works very well as in my picture.<br><br>thanks again.<br>
Nice article, <br><br>Just bear in mind, there are very good reasons why gears have the profiles they really do !
:-) Yes I know - BUT for much hobby use the sinusoidal gear if not heavily stressed works as well and is much easier to construct with very basic tools.<br><br>Remember for hundreds of years Windmill manufacturers got by with simple squirel cage and pin gears.
You'd like Mathias Wandle's gear generator Rick. Steve has it, it's brilliant.<br> <br> <a href="http://woodgears.ca/gear_cutting/template.html">http://woodgears.ca/gear_cutting/template.html</a><br>
Yes I have seen that and used it - Works great and his wood work is fantastic. <br><br>There are other sites that provide gear drawing software as well - I believe inkscape has a gear drawing engine in it .<br><br>This is just a very simple way for someone to do it with basic compass and pencil tools.
I'm a big fan of Wandle's site it is defiantly worth looking at
Very useful.-

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Bio: Retired technology teacher - 2 kids, I have an Hons deg in Design and Technology - 28 years as Computer systems engineer Trained as Electronics engineer in ... More »
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