===== week 7.1 =====

=== The Textile Scaffold. ===

**Assignment | 7 November 2017**

Make a prototype of a technical textile application.

ref.: [[http://fabricademy.fabcloud.io/handbook/classes/06_textile_scaffold.html|http://fabricademy.fabcloud.io/handbook/classes/06_textile_scaffold.html]]

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**Mesh mode**

To start I first need a model : [[https://www.thingiverse.com/thing:713270|https://www.thingiverse.com/thing:713270]]

  * Modify > delete faces (remove the little ring)
  * Modify > reduce (downsize model)
  * Modify > remesh (recalculate geometry)
  * Modify > scale (I used a sketch as template for reference).

{{:fabricademy2017:students:linda.wanders:knot-1.png?444x250  |resin-prep-1.jpg}}{{:fabricademy2017:students:linda.wanders:knot-30.png?444x250}}

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**CAM mode**

In setup you define the origin and stock size.

setup > new setup

{{:fabricademy2017:students:linda.wanders:knot-31.png?444x250  }}{{:fabricademy2017:students:linda.wanders:knot-32.png?444x250}}

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**add toolpath**

Now to choose an appropriate 3D toolpath. First step is understanding the difference between the top 2 toolpaths in the list. In hindsight, the description is accurate. :)

I first tried milling with the adaptive clearing toolpath. Which almost resulted in a broken tool. What I did not realize it will do, is use the entire length of the tool to push trough the material. The machine I am using is the Roland SRM-20 which is not strong enough to handle that kind of force.

So for me, using the pocket clearing is the way to go.

{{:fabricademy2017:students:linda.wanders:knot-26.jpg?313x350  |knot-26.jpg}}{{:fabricademy2017:students:linda.wanders:knot-27.jpg?321x360|knot-27.jpg}}

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**Pocket Setup (roughing toolpath)**

{{:fabricademy2017:students:linda.wanders:knot_pocket-setup.jpg?903x505|knot_pocket-setup.jpg}}

{{:fabricademy2017:students:linda.wanders:knot-35.png?444x250  }}{{:fabricademy2017:students:linda.wanders:knot-simulate.jpg?444x250|knot-simulate.jpg}}

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**Morphed Spiral (finishing toolpath)**

**{{:fabricademy2017:students:linda.wanders:knot_morphed-spiral-setup.jpg?900x380}}**

**{{:fabricademy2017:students:linda.wanders:knot-finishing-toolpath.jpg?444x250}}**

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**Define tool library**

This is the first time I am using this CAM tool, so also the tool library needs to be created. The tool I'm using is a 1/8 inch, 2 Flute Ballnose from Carbide depot.

From the tool library I selected a generic ball nose mill, which I copied and then changed into what Im using. To start I first compare (or edit) the size of the cutter with the data stated on the website. On the website, linked under technical resources you can find a data sheet speed & feed recommendation.

{{:fabricademy2017:students:linda.wanders:knot-carbide-depot.png?444x250  }}{{:fabricademy2017:students:linda.wanders:knot-carbide-depot-datasheet.png?444x250}}

{{:fabricademy2017:students:linda.wanders:knot-7.png?444x250  }}{{:fabricademy2017:students:linda.wanders:knot-9.png?444x250}}

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**2D countour (cut out toolpath)**

In "model" mode I use the 'projection' to create a silhouette of the 3d file. This silhouette can then be used in CAM mode as a 2D contour toolpath.

{{:fabricademy2017:students:linda.wanders:knot-18.png?444x250  }}{{:fabricademy2017:students:linda.wanders:knot-2d-toolpath.jpg?444x250|knot-2d-toolpath.jpg}}

{{:fabricademy2017:students:linda.wanders:knot-2d-contour-toolpath.jpg?904x390|knot-2d-contour-toolpath.jpg}}

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**Post processor**

This will export the file to Roland milling file. This can be imported to Vpanel, which it the program that drives the milling machine.

CAM > Actions > Post process.

{{:fabricademy2017:students:linda.wanders:knot-21.png?444x250}}

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