Stool design

After going through many CAD model designs for the stool.  I decided to have a go at constructing a stool thought 3D printing plastic joins that would hold the structure in place whilst welding.  I ran into a few problems very quickly in the construction of the base.  After welding most of the base together I realised that the steel had warped.  this could have been due to heat expansion.

There were also parts of the design that were too close together and difficult to impossible to weld.

After spending a few weeks on this I decided to go back to the drawing board and simplify the design.  I drew many other models that gradually became more simple.  I still wasn’t entirely happy with the construction and felt what I was trying to achieve was far too complex and may not end up with a good result.stool.png

After discussion with Jon Christie about furniture he suggested that a simple three lagged stool is the most stable stool you can have.  As the stool is for my workshop I felt it was an important design idea.  I then spent a few more CAD models perfecting just one element that would be 3D printed to hold together my stool.  stooltop

The piece can be screwed into the seat from the middle and the three legs can be slotted in.  I am now in the process of 3D printing a prototype to test the element.

seatbit

Stool Design

Over the last month or so I have been working on design algorithms using Grasshopper in Rhino 3D.  I decided to apply this fist to the stool I will need for my jewellery bench in the workshop.  The reason I chose to apply this to the stool is that I currently have a Pakistani rushty stool which is the perfect size and shape for my workbench.  So I decided to use this as the size and shape that I would use in rhino and then allow the computer algorithms to design the rest of the stool.

It has taken quite a long time and different models  perfect the final design.  I found that some of the T-splines wouldn’t Boolean union which meant I had to delete some elements.  I also had problems with some splines unioning but then the model had no volume.  To get around this I had to keep checking the volume and saving regularly to find and delete the bad splines.stoolrender

I have 3D printed a small model of the stool from my home printer.  Because the size of the university computer is about 20cm I have split the stool into eight segments that will all be printed separately.

From the model I printed I realised that the base of the model would be too thick, so to cut down on materials I have cut the larger model down to 5mm thick at the base.

The stool is now getting printed so I will be looking forwards to seeing the result.

 

Algorithms

For the last week I have been trying to get my head around design algorithms.  I always thought the products from the effects are great and that the endless design opportunities are really exciting. 

For the last thirteen years of using rhino I have always worked in a design led way.  I nearly always begin with a sketchbook and pen.  I decided I wanted to make at least one piece for my shipping container house whereby I have an initial idea and let the computer work out the details of the design.   After spending a few weeks making a cushion cover for my jewellery making stool I decided to recreate the current stool design I have using CAD.  I am currently using a Pakistani rushty stool which I love for size weight and use.  I am planning on taking this basic shape and running algorithms on it to determine my final stool design for the shipping container house.  This is all quite easy to write however I have soon came to realise that this is going to take a little more time to get to grips with than I had originally thought.

 

I began the week looking at software called Dreamcatcher by Autodesk.  I have seen many articles on the internet of how this program has been developed to be able to let a designer run variations on their model to come up with the best design solution.

https://autodeskresearch.com/projects/dreamcatcher

 I really wanted to use this software to develop my idea however after talking to Autodesk the software is not yet available.

I then decided to check out Grasshopper which is a plug in for Rhino.  This is where my mind was blown and I became stuck in the computer for the last five days.  I thought I knew most things about Rhino until I downloaded Grasshopper!  I have discovered that I need to learn an entirely different language.  I would compare Grasshopper to designing through being a virtual electrician.  The commands are very similar to Rhino, however they are wired together in an order almost like coding.  The program allows you to change a design multiple times without rebuilding it every time as you would have to do n Rhino.

After day 3 of teaching myself from youtube video’s I hadn’t got very far in terms of designs, however I had seen a change in my way of thinking and the coding began making more sense. rhinoshot2

https://www.youtube.com/watch?v=uhg5WAV0lss

 

By the end of the week I have managed to get a little further, however I definitely need more practice and my design is still not what I am looking for!stool2