This week I focused more in learn how the milling and carving was done, to have more skill in the change of bit mills and how to operate the machine, that is a dangerous one. To have more freedom in the future. My low proficiency in parametric design programs still stooped me to make interesting things.

Lesson

Academany Fab-2016.03.09D Lesson 07: Computer-Controlled Machining from Fab Academy on Vimeo.

Review

I use a couple of minutes to show Neil my Fabshield

Academany Fab-2016.03.16B Review 07: Computer-Controlled Machining from Fab Academy on Vimeo.

Project

In the project web you can see another example of using the CNC, where the structure of the pyramid and the Z shape display are made with the CNC and they use pressfit joins.

Project

Ideas and test

Ideas

Dreaming is fine but doing is better, and I get struck in perfect dreams. I tried to advance and learn a little more with Grasshopper as I strongly think that parametric design is a great tool for easy scaling the joints of a design faster and more accurate than with a classic design tool. But for that task you need time for learning and time is a valuable resource than a fablab student don't have so many times.

The North Remembers

I had still to make some real work in the CNC from a previous course that my instructor Nuria Robles taught for the basic of design and all the security norms you have to follow to use correctly the machine.

As I didn't to cut and build another seat as I saw the ones made by my fellow students I choose to take a free vector logo of the Stark House of Game of Thrones as was a easy cut for start learning and I could think to made something with the scales of the direwolf.

I could take some little piece of wood to make a 50x60cm head, is not bad plywood 18,6 mm plywood and the result was nice.

Typical parameters except for the depth of the material for cutting with the 6 mm bit.

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Routes for the dire-wolf head.

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The scales were made with a boxed technique carved 10 mm<./p>

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The cut line was made with a 6mm drilling bit and you have a fierce dire-wolf head with big open mouth.

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Coat of Arms - Shield

I decide to take the risk of let pass the chance of making a practical study of wooden joints as I had several problems with the design programs and practice with a project with several layers and try to make a little more difficult and time consuming project but still affordable.

My city León in Spain is a town with more than 2 thousand years of history, and was an important kingdom in early medieval ages, around XI and XII centuries. The Cortes of León from year 1188 was a parliamentary body in the medieval Kingdom of León. According to UNESCO was the first sample of modern parliamentarism in the history of Western Europe.

So I designed a simply coat of arms

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Milling the shield of coat of arms

I used 3 types of bits, 2 plain ones of 6 and 3 mm and a conical of 12 mm and 90 degrees.

You have to be very careful to tighten the bit, to secure it. 6mm drill bit in the picture

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To don't make a over complex model I just make 6 paths. I have to change some parameters as I realize some mistakes, like that in the same path was objects that in the real model wasn't in the same depth.

The picture said that it will take 3 hours, but with that modification and my lack of skill for changing the bits as I was more than 4 hours and 30 minutes.

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Milling the inside part of the shield, from 0, to 5mm deep. You can see the silhouettes of the lion, gears and Fablab logo

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The material wasn't the best and make lot of dirty borders, you can clean them, but I don't recommend it for a professional work. The 3 mm bit didn't make a great job with letters

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Parameters of a 3 mm flat milling bit for making the details.

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Parameters of a conical milling bit for making the border of the shield

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Finishing the border of the coat of arms.

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You can compare the size of the shield with me, it's size is more than 80 cm width, and I'm more than 190cm of height.

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