Composites

This time we have to design a mold to produce a 3D model in a fiber composite.

First, I have drawn in CorelDraw and AutoCAD 2012 a piece depicting a Music House, Rem Koolhaas in Oporto, which it will be use as a pencil holder. Therefore, I have to build a base of geometric shapes, such as triangles, squares and pentagons.

This design was cut by a GCC LaserPro equipment, Model GX spirit of 60 watts, and for this case a cellulose based material of 2 mm thick was used.

Draw in Corel

Download file composites.cdr (Open file with Corel Draw)

Drawing prepared for laser cutting

Download file composites.dxf

The piece was cut, so I had to reduce the speed for the marks of the folding lines, which allowed me to make the assembly of the piece easier. The speed in this case was 80% for marking, 4% with respect to the 80 in / min cut feed rate, and in both cases with a 100% power of 50 watts.

Assembling the 3D figure

The Music House model fully assembled.

Because there were no lines drawn on the model by the computer, I had to draw the lines with a pencil as a drilling reference.

A 1/8" drill bit was used to make the holes.

Bind all figures until the desired pattern is formed In each hole a 1/8" wooden stud was placed to give rigidity to the model and to prevent it from collapsing when adding the compound.

These are the wooden sticks that were inserted into the mold, which I wanted to use to ensure the drilling for the placement of the wooden pencils.

One of the mistakes that I realized I could have done in the AutoCAD drawing, and fix it later once the model was to have made the circles for the holes, which holes were 3/8 inch diameter on one side to place guide bolts that will give us how the model and finished diameter which enter pencils.

The finished piece is similar to the fake exposed concrete.

The mold with the wooden rods placed for casting.

COMPOSITE I

CONCRETE WHITE + SYNTHETIC FIBER

Mixture of materials

Emptying Composite I

Removing the mold from the Composite I

FINAL PROJECTS.

COMPOSITE II

For the composite II, I use an existing template that I had performed first in Rhino and Rhino CAM. However, I did not include it in the initial work file because I do not have it, but it was used as a practice on Composite II.

CONCRETE + SYNTHETIC FIBER + SEND + GRAVEL