This is a clock made fully out of acrylic!
This was originally was my year 13 mechanical engineering college project, we had to research, design and build a project for a stakeholder, this including lots of recording so there is no shortage of photos.
the use of acrylic for a main building material was decided to make a new feature piece, it also is a simpler material to work with, with the limited machinery you find in a college workshop. The clock is fully my design and took about 13 weeks with about 16 hours a fortnight. I wanted something a bit different from the standard clock with three hands and circular design, i wanted to included the look and mechanical workings in the old grandfather and skeleton clock. This is where the open design comes from so all workings are visible so you can see how it operates.
because of its design out of all flat material this clock could easily be all cut out with a laser or CNC cutter, or even 3D printed ,making production quicker and more accurate. Because Autodesk Inventor was used to design the clock, all the files needed very little work before been sent to a cutter or 3D printer.
As the title my suggest the clock is mostly 3mm acrylic, this could be any color weather its transparent or opaque, its your choice. the only other materials are:
Here is a link to my full project I did with this clock, which will cover anything I miss as this project has a too many parts to cover in one Instructables.
the first idea were done on a whiteboard but were developed with Autodesk inventor, a free software available to student or a relatively small price for other people. it enables the user to complete complex 3D and 2D designs cover all functional and atheistic needs. Because gears are a pain to do with the software, in the CAD designs i didn't do the teeth as they will be in the clock, i just had them rounded. This means i could get all the sized right and do tests but i didn't waste lots of time calculating gear teeth. Once i knew what size gears i needed, I used an online gear template calculator that gave me the templates to create the gears.http://woodgears.ca/gear_cutting/template.html
Here is the Autodesk inventor CAD files if anyone can use them. I don't know how useful they will be as I only used them for planning the layout, not for templates, so they would need a fair amount of work to be laser cut. https://drive.google.com/folderview?id=0B4V1Ma-qByctOGprQ0NWV3Nac00&usp=drive_web
I would recommend getting the gear templates for each gear and laser cut them, then use the CAD files just for the frame, but check it has the right dimensions between holes as your gears might not run nicely otherwise.