I aim to make each of my new designs unique in some way, but as I reached the 58th clock, this became increasingly challenging. However, I was able to create a design that would run for over fifty hours without using a weight of greater than a kilogram. This utilizes two 375-gram weights, needle roller bearings, and brass pins for pinions, and it works well. It is a big clock, just shy of 600mm tall, and it employs a Graham escapement, which is one of the greatest designs for these large wooden clocks. The length of time for which it runs is mainly dependent on how far up the wall the clock is mounted and this prototype has the centre of the Dial at 1600 mm above the floor and runs quietly and continuously for 52 hours with an accuracy within 20 seconds per day.
DXF files, and the STL and STP 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.
Drawings for this clock in PDF format can be downloaded here. These free files are low resolution and not to scale and only a sample of the full set that comes in the paid for version. Clicking here will download the PDF file directly to your browser, may take a few moments so please be patient.
A sample of the Instructions for assembling the clock components.
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.
A sample from the DXF file – the file is purposely low resolution, with no vector data. The actual files purchased above are included on one large sheet so that they may be directly loaded into your CAM program.
