More photos of my final design.
My final design being used. Please note that this is just a prototype and not the final aesthetics of the design which I have created renders of. Unfortunately the knife part does not function properly although the rest of the model does . This is because I had to make the prototype with knife parts that were too short for the tubing and so the pressure is mostly being applied to the sides of the tubing (where the knives do not extend to) and not the centre where it can cut. On top of this, the model does not have the circle parts on the press which line up with the knives pushing food through. Having made this model and tested it I have decided that hard silicone might not be the material for this piece as it may not be applying enough pressure to the food as it has some give. Apart from this the model works it’s just that the fittings are super tight because of the tubing being so off centre and slightly oval.
The knife piece I previously tried to rp which didn’t work. I made it from layers of circles on the laser cutter and built it up. It took a long time to get the dimensions of the circles right as the tubing I was sent is not a true circle. This piece and all the rest of the pieces only open and close together at certain points because the tubing is so off from a circle shape so with the final model it can be easy to fit in or extremely hard. It needs to be such a tight fitting that all the pieces hold together with its own weight as more.
The real knives will be ceramic knives because these are sharper and stay sharp longer making it easier to cut. They are white which looks cleaner and more hygienic. The white of the knives lines up with the white of the hard silicone press piece so people know they for together. With the real piece this would be injected around the knives holding it all together. The Perspex would be holdings knives as it is strong an food safe and the bit people touch would be made from hard silicone giving it a tactile textured feel people know to touch.
The moulds I made for the lid, base and the inverse part of the knives. They are all going to be made from duramold but in the real design they would be made from hard silicone because these pieces need a solidity while also being tactile and food safe. This material will holds it’s structure well and friction for tightly to the necessary pieces
Making the cutting device from Perspex circles as the 3D print was unsuccessful. It took a lot of attempts to get the inner circles the right size for the tubing because of the tubing being such an inaccurate consistent diameter. These were all cut on the laser cutter and glued together.
The final design, of the V* snack bar pots. It comes in five bright colours for desirability. People like kitchen utensils in this style. The design comes with five pots because there are five days in the week and so this allows for a snack each working day. Large families also have five people and so this would allow for everyone to have a snack. The snacks are small so depending on the person they could take more or less as needed.
Had to go get one of my pieces RP’d today because the company we ordered material from never brought it on time. Went to make labs in Aberdeen. Unfortunately, the machine would not print my model here. It was tried twice and both failed. That blue piece is all it printed of the first attempt.
I tried it on my model and it only friction fits slightly at one point. The rest leaves a gap where it is too loose. I will change the dimensions of my next prototype.
As the laser cutter is not working I’ve come up with a new solution to laser cut and layer the pieces sticking them with glue which I will have to try come Monday.
Sadly, something’s gone wrong with my dimensions in rhino for my silicone mould piece that is the inverse of the knives. You can see the mould does not line up and I will have to do another one.
A lot of my moulds have messed up because the mould has barely any space to be clamped and so the clamps often ping off when I’m removing air bubbles. I’ve made a bigger mould edge to cope with this. Let’s hope it works better. You can see how off centre the last image is because the clamps came off while casting.
Also having to remove the mould lines with a scalpel so I’m going to start using j wax before pouring the silicone.
Testing samples. This was the sample I made with a 6 mm base and it works much better. This is the size of both caps I am going to go with for the final model. Now to make them! My design comes with five different mini packets of different bright colours. The choice of colours was to make the product more desirable. And the reason for five is that it is a product for snacks at work and there are five working days. Five is also the number of a large family and would allow everyone to take a snack for the day. The different colours allow for personalisation and I realised with this model you can even mix and match the colours to your preference! More fun for everyone.
This was the three millimetre inner base mould and as you can see it falls through the tubing quite easily when you apply pressure so I have decided to thicken it by another three mils on the inside. I will make a new pro type and test it.
This prototype messed up. This one was done using fast drying silicone which dried too quickly as I was aware I had more time than I did and I put the catalyst in before mixing the colour. Next time I’ll do it the other way round.
Got my recipe book printed today. I made it as close to circular as I could to represent the branding. It is super small and short making it quick and convenient to open and read. Using only graphics of the foods needed and the word of the ingredient underneath, it is quick and easy to read recipes visually. The recipes are split into the upper section (gelling agent) and lower section (dried fruit and nuts), mirroring where the design holds certain foods.
The design needed a bit of development to get the pages lined up when printing and to decide on final text and information contained. I need to make a few more images for the book and then I can print it on nice paper tomorrow.
Poped my moulds out today. Forgot to take a photo of the parts together. The lid is perfect, it works perfectly but the base doesn’t stick on as strongly as I would like for it to function brilliantly so I have added an extra three millimetres to my next base mould. Here’s hoping it says in place more firmly. I added t to the inside because I think this is what makes the biggest difference.
These are 24 hour drying silicone pieces. I have only just been told today there is 4 hour drying silicone!