Compostie

This week's assignment

1. Make a big 3d mold
2. Use fibre composite

Design 3d mold

3d modeling

For this week's assignment, I decided to make a long board. It's big and I need to desing 3d model, 3d cnc machining and using fibre composite. So pefect for weekly assignment!

I started to desgine 3d mold using Fusion 360. My designe precess was this;

1. Make a curved surface
2. Make a two sides mold

I used spline tool to make a one curve for guided line. And made it symmetry. And after that I made several curved lines along the path. Then cread some faces using form tool. Fusion 360 has an amazing free tutorial so anybody wants to learn fusion 360, take a look this. So now I got a surface for a board!

So what's left? Find a material for mold. I used pink foam. It is light but dense, so it won't break into a dust. Calculate the size of the working dimension; width, length and depth!

In 3D design file, I made a box and substract the surface to checke the final result. And it looks pretty awesome!

3d machining

Here comes the time consuming part, 3d machining! Take a beer and chill!

One problem I found was the double side tape is to strong actually

I tried to dittached with scripper, and ..... I broke the foam.

I was so embarrassed, because it seemed like I need one more night to make another mold and literally I ran out my time. My local instructor just gave me an advice to fix this problem. Just put a board at the bottom. Okay all time consuming parts are done!!!!

Use firbre composite

process

To make a longboard I used 4 layers of wood panels and 1 layer of fibre glass glued with resin. Resin harden very quickly, so all precesses should be done in limited time. I did all precess with our local instrctor. So prepare everyting before start the precess.

Cut the wood and fibre glass with laser cutter. And I did the simulation before I do real.

So it seems every material is ready. Just before start a copmosite, let's check the safety rules. Safety first! always!

Put your awesome protection mask and super sexy latex gloves on.

fabrication precedure

1. check the process agian: bottom mold -> plastic cover -> 1st wood -> glue(resin) -> fibre glass -> glue -> 2nd wood -> glue -> 3rd wood -> glue -> 4th wood -> plastic cover -> upper mold ---> weight
2. put all materials in a order; wood, fibre glass, resin and molds
3. mix resin and hardener
4. paint it fast!
5. put somethign heavy on it

Annnnd wait another day. (You know it means it's the time to grab another beer )

Results

Whooopa! It is strong enough and looks super cool!

Design Files

download

Conclusion

What I succeeded

• Made big 3d mold
• Used fibre composite

What I didn't do yet

• Put the wheel and crusing the city

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