Assignment

• Design and produce something with a digital fabrication process (incorporating computer-aided design and manufacturing) not covered in another assignment, documenting the requirements that your assignment meets, and including everything necessary to reproduce it.

VACUUM FORMING

A wooden box was made with a hole in the side to fit the hose of the ash vacuum cleaner. The ash vacuum cleaner is for ordinary wood stoves at home or vacuum cleaner for house.
Then the upper surface of the box is drilled with a drill but the holes must be neither too big nor too small.

Two boxes were made, one larger and one smaller.
Since we had to use plastic plates - because I didn't have thermal foil, I used a smaller box to make the mold because it was easier to create a vacuum than on a larger box.
The plate rested better on the lid of the smaller box and thus a better vacuum was achieved.
The larger box had too many open uncovered holes and not enough vacuum could be obtained.

Now it was necessary to make models to be used to make the mold. In the Onshape program, I made simple models - the heart - but several different models. The first model is the largest and has a rounded surface, the next three are a small heart, then the second heart is increased by 200% and the third is increased in width and length and the height is left as in a small heart. The reason for this is to see how it will be possible to make a mold at different heights - thickness, width and length for the same object and different mold material.

I printed all four hearts on a 3D printer, but with a thicker filling - 30%, so that the material does not melt during the making of the mold. In this procedure, the mold model will melt if it is not well filled, if the filament is not of good quality, and if the heating gun gets too close.

The pictures on the left and right show the models that were used to make the mold and melted in the process.

The moment this idea came to life I did not have a thermal foil for the vacuum forming process at the time of making the device, I took plastic plates.
The best are white. Those in color dissolve and deform differently - they crack faster in the process of pouring soap.
After that came the thermal foil so I used it too.
To heat the plate we used a hot air gun to remove the paint from the wood.
After we shaped the plastic plate according to the model we would design, we poured glycerin, pure or with additives.

Using thermal foil in this mode, molds can be pulled out, but it is harder to work because the foil is thicker and harder to heat with a gun in this way because a larger surface cannot be heated at once and cools quickly so it fails to take the proper shape.

- Vacuumforming on our way -

Glycerin is a sweet, colorless and odorless liquid-colored ingredient at room temperature that can be frozen into a paste and has an extremely high boiling point. There are several important properties that make glycerin great in skin care. It is primarily a humectant, which basically means that it retains moisture in the skin. Because of its ability to bind the skin’s natural moisture, glycerin is used in very dry skin care products or skin on which we use dehydrating acne treatments that leave the skin dandruffy and uncomfortable. Then there is the hygroscopic ingredient which is also important for people looking for hydration as this means that glycerin absorbs water from the air. Glycerin treats dryness and dandruff of the skin by absorbing water during the day which makes the skin moisturized and hydrated.
The glycerin I used comes in the form of plates and is then cut into desired pieces. I cut it into smaller pieces for easier, more uniform and faster melting.

After cutting, I put the glycerin cubes in a high-temperature-tolerant dish and placed it in the microwave. I set the temperature to maximum but the melting time is then about 10 seconds. Glycerin must not boil completely because then air bubbles appear which may remain in the soap.

After the glycerin is dissolved, a natural color can be added if desired, because it is better due to allergic reactions of people who will use soap, essential oils can be added, it is also better to use natural and plants can be added - flowers, coffee, apricot kernels. or almonds ground to a powder.
When pouring glycerin into the mold on the upper surface can be sprayed alcohol - 70-80%, which will remove air bubbles from the surface.

In addition to the soap, I melted some cooking chocolate and poured it into molds.
This way of making molds does not meet the hygienic requirements to use food, but I just wanted to show that if the hygienic conditions are met, dissolved food can be poured into such molds.

ORIGAMI - Paper Kaleidoscope

My next choice was paper.
Paper folding - origami.
I found a handful of interesting projects on the internet but I like this one and wanted to make it for my son. - Paper Kaleidoscope -
Since he has graphomotor difficulties, this so-called toy could be a challenge in terms of finger coordination, because at the same time he has to hold and turn parts and there are no early surfaces, which is an additional aggravating circumstance for him.
Success - mine in bending and his playing you can see in the video below.

For this I needed 25 x 8 = 200 pieces of paper measuring 85 mm x 85 mm. I started folding each individual paper.

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