Sunday, November 24, 2013

Building the “Toucan” wooden clock Part 1

I will be posting the advances and the leanings while working in this project. I am working as much and as fast as I can in this project because very soon I will start a new contract (life is not always hobbies Guiño )and I will be traveling a so the available time to play in my garage will be dramatically reduced Triste

First step was to finish all the finish the drawings in CAD, second step is to post-process each part to generate the G code for the CNC. this means also to select the tooling and the material.

Wood (good wood) is not easy to find. For the wheels and internal components   I will use Birch ply-wood for the wheels and pinions and also for the clock arrows but for the frame, the base and  dial I wanted good wood. and good and nice  wood is expensive and not easy to find .

The most difficult part from the machining point of view is the dial ring because I changed the design and instead of cutting a disc of wood and then glue the numbers in wanted to carve the wood to form the numbers. I also modified my original design and now the numbers will be Roman style and

In the internal ring  face there will be inserts of brass rods marking the hours so I decided to start from the dial ring.

Dial Asy

The main problem was to find a good wood for the dial, The best wood I could find for this was in Michaels and is a cross cut of bass wood that is about 11” diameter (Basswood Country Round® – Large) , perfect for the size of the dial ring. This is a very good wood for carving that is exactly what I planed.

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The thickness needed for the design is 3/8”plus 1/8th for the numbers so this is  is 1/2”. the wood was a little bit less than 3/4” (.605”) so I had to mill it down to 1/2”.

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After this cut the center part and make a rough milling of the numbers and the front face:

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Next step was to make a finish milling of the face. This  creates a  surface with almost no irregularities and this will reduce to a minimum the work with sand paper for stain and finishing:

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Finally the finish mill of the numbers the internal ring face and cut the dial from the main wood:

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Total machining time was about 5 hours as I used very low feed rates and small step advances to avoid stressing the wood and obtain a good finish.

 

And this is the final results! Sonrisa now the dial ring is ready for a nice wood finishing.

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2 comments:

  1. Wow Carlos!, this is really great stuff!, will you sell them??, I'm a fan of wood, a dial with really exotic fine wood would look wonderful! keep the work and let us know when it's finished!

    ReplyDelete
    Replies
    1. Welcome to my blog! First clock will be for my personal joy and decoration of my office, but I have not decided if I will sell them, it is a lot of work I doubt people will be willing to pay...

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