Finishing!

I use Danish Oil for the plywood to bring out its texture naturally, and matt finishing for the frame

ASSEMBLY!!!!

Sanding

This is the close shot of the plywood.

Before doing any finishing for the stool, sanding to give it a nice surface is very important. 

And this is after sanding the frame and plywood...

Shaping the plywood

Then, another bending with a thin veneer on the top to make it different colour. Once again, forgot to take a photo of it's been bending/clamping again

Next, making to cut the shape correctly...

Thank Victor from the workshop for helping me cut the plywood

Bending Plywood

 I use 5 of 2mm plywood for making a 10mm thickness. 

Clean off the dust and apply PVA to glue them together

A quick checking before forcing all to the mold

And finally it's molded and clamped.

I left it for 2 days drying. This is the result...

It's very very very strong already as you can see the photo above.

Making a Mold

This is the internal mold for the bending plywood. Using the CNC machine to cut pieces in accurate sizes, then slot them together 

.... and external mold.

BUT, badly the external one is not correct, then I decide to use only the internal mold. 

Making the frame

I tried with a 6mm mild steel rod but found out it's not really strong to make my stool stable. Sadly, I forgot to take a photo before its shape is changed by testing.

Then I tried with a 8mm mild steel, a bit worried because it's quite heavy. But not really bad.

After that, start making the frame. Here is some checking after bending to get a right angle

Next step, welding and here is the result....

Done for the frame!!!

Checking the weight

My first idea is make a cushion seat with leather cover. But I found out that it need a lot of steel, the material as I use for my frame, and the mesh and cushion. It's considered quite a lot of weight for the stool as i weighted them in workshop

From the experiment with material before, I tested plywood mostly and it's pretty light. Also it help me minimize the use of mild steel. The shape a bit change but still able to give a visual triangle

2 front legs are flatten a bit to make the stool stable and easy to assembly the frame and the plywood. The frame is minimized a lot, but still strong.

Well, somehow it has a trapezium looking from any side  of the stool. Quite satisfied with this result!

Mock-ups

I change the seat from rectangle to trapezium shape with the long edge and smaller to the back side

Also add a stick between 2 front legs to help it not stretching and change the sharp point to flat 

Stacking

BUT, the changing makes the shape goes too far from the original idea that giving a visual triangle from any side of the stool.

Then, to go back to the original idea. a little bit change again

Keep the sharp point (or make it a very short flat) and move the point a bit further out

Ergonomic Checking and Solutions

This is my very first mock up. After the consulting with the tutor, we found out that people will be fallen over easily because of the point at the back side. So, we have some solution for that 

1. Chop some materials off, so the stool can be lighter and avoid the weak point

2. Make the sharp point a bit flat. More balance

3. Make the angle a bit more