I have introduced a collection of gears, so that you can use them for your own projects.
There are 30 gears in the collection, they start with 8 teeth and continue in the preferred series up to 100 teeth. They are all developed from the tooth profiles used to run the Woodenclocks, so for slow running applications like Automata they are ideal.. The gears can be cut from any material and any thickness, using the DXF files provided. The gears can of course be scaled as well to suit your needs, but do work out the centre distance between the mating gears at the original size first, and then scale the gears and the centre distance.
DXF, PDF files that can be used with your CNC machine can be downloaded here for $26. You also get the unrestricted version of the PDF files that can be printed at full size.
This Project can also be bought as a bundle with Mechanisms and Clock 15 for $32.
Drawings for this clock in PDF format can be downloaded here. These free files are restricted so that you can only view them on screen but not print them. Clicking here will download the PDF file directly to your browser, may take a few moments so please be patient.
To print only a single item of the drawing to scale using Adobe Acrobat Reader, do the following:
Go to Edit, then click on Take a snapshot, move the cursor to the top left of the item you want to print and hold down the left mouse button whilst you drag a box around the item. The inside of the box turns blue and you can now go to File and then click on Print. This brings up the print dialogue, make sure Selected graphic is selected and that the Page scaling is set to None and the click on OK. As long as your printer is connected you will have printed the item at size. Do this for each item you want to cut out.