Week14: Composites

Assignment


MSDS

This is MSDS (A, B) of resin I used in this assignment.
download .zip

This company does not have TDS in their office. Their factory has TDS, so they will send me after they get it.

Design 3D mold

I decided to make a simple tray. I designed 3D mold based on simple rectangular.
When I make rectangular, I used makercase.com first. Then arrange some part for laser cutting.
Outside mold: strengthened by T-slot Inside mold: glued close-box


Estimated material thickness which is the gap between inside mold and out side mold is 5mm.
download .cdr .pdf

Fiber Material

I used dungaree as natural fiber. The thickness is about 1mm. I suppose to use this up to 5 ply for 5mm gap of molds.

I firstly made pattern paper which fits in the outside mold by laser cutter. Then I cut dungaree by scissors in that shape.

download .cdr .pdf

Composite

First try
Cover the molds by plastic wrap and set 2 ply of dungaree. Pour the resin which is same as week12.

Because pot life of this resin is 120 sec, I quickly pour resin on dungaree and put inside mold on. I thought there is not enough time to set clamps to press. Then keep pressing by my hand. Estimate volume of resin is difficult in my case.

Result:

Second try
Resin(55g+55g) is prepared.Press by clamps.


Result:
After I cut rim out, I got...

Cat Tray