HELLO 8M STOOL :)

Picked up at the factory

I actually wanted the Wineberry colour but it doesn't available in ripple finish, because I wanted to cover some of the scratches, Cheery Red ripple is the only colour available in red that have the texture I wanted so I had no choice. But it came out kind of good still :)

Applied felt pads to protect the stool and the floor, it might be also prevent from slipping

Front view

Side view

Perspective

Me sitting on the stool

My weight: 48kg

Ideas of using the stool as part of keeping things

Small bag

Student - bag and books

Magazines and newspapers

The product name is 8M, 8 has the same pronunciation as letter A, AM means morning, the time that most people have coffee before going to work, or prepare for a day.
The stool has a shape as number 8, so the name 8M was born, it can also mean 8 in the morning.

FINAL DESIGN BUILD UP

Sheet metal arrived

Folding 

Setting the angle to fold

Completed pieces

After that I clamped then drilled the pieces and did the rivets

The tricky parts was the edges, it was hard to get it together in the right angle. 

Sanded it so it will have a nice surface

Finished the product 

Tested the weight 

Tested the strength

Joel: 98kg

Prepared for powder-coat

STAGE 5: FINAL DESIGN SIGN OFF

Base on the mock up, the stool is not stable and moving. To fix this problem, Daniel suggests to make the folds and overlap each other to create the strength.

Draft Solidworks

Sheet Format

After re-make on Solidwords, I found out it is weight 2093gr, which is more than the maximum weight that is allow on the brief, I need to have some spare weight for the finishing and rivets as well so the idea is to cut a hole on the base or perforations everywhere to reduce the weight. Also have folds along the edges to make the design nicer and stronger

After discuss with Allen in the workshop for the minimum fold of 10mm and fix some of the edges, I cut a hole on the base that have the border of 60mm and re-make it again on Solidwords and it weights 1866gr

Now the only thing that I have to think is should I use rivets for a strong design or just glue for a sleek design.  Glue cannot be powercoat and I need to do the powercoat first before gluing pieces together, while rivets can be powercoat.

Draft Solidworks

Sheet format

Small holes are to locate the rivets

STAGE 4: WORKSHOP EXPERIMENTATION

Sheet metal arrived

Bending and joining using rivets

Join of the middle parts

Finished mock up

The joining

Testing the strength

I have made a mock up base on the sheet metal format and found out a lot of problems to fix. The stool is not stable and moving from side to side.

STAGE 3: DESIGN REVIEW

Perspective view

Exploded view

GA Drawing

Sheet format

Using 1.6 mm aluminium sheet and the weight calculate in Solidworks is around 1.840 kg 

DEVELOPMENTAL WORKS

IDEA: Combine concept 1 and 2 together.

After made the mock up base on the development concepts above, I figure out it is hard to make curve shape, then I changed the design but still keeping the idea of combine 2 concepts.

Making different surface shapes and choose 2 round shapes at the end to make 1:5 scale mock ups

Because it still bend and not strong enough so i tried different joining methods

Joining top and bottom parts together through the piece in the middle (2 layers in the join)

Can only hold a cardboard's box

Joining 2 parts with the middle part that also have a joining part (3 layers in the join)

Can only hold a cardboard's box 

2 pieces of the middle joining both top and bottom parts (2 layers in the join)

Can only hold a cardboard's box

Put diagonal parts in the middle to create strength

Can hold a pair of pliers

1:2 scale mock up

After discussed with my teacher, I've chosen the one without the diagonal parts but make the middle piece shorter so it might be stronger. I might have to reduce the size of the seat surface to reduce the weight.