XII. | SOFT ROBOTICS¶

| INFLATABLES |¶

INSPIRATION¶

VINYL CUTTING¶

Flock heat transfer vinyl¶

Adheres to: 100% polyester, 100% cotton, poly/cotton blends, leather

Flock is a heat transfer vinyl that gives your design an added dimension given a raised, soft, and textured suede/velvet feel that is a perfect alternative to embroidery.

Brand	Material	Thickness	Flexibility	Visual	Structure	Texture	Strengh	Weight	Heat temperature	Heat time
SINOVINYL	PVC	1 mm	Low	Matt	Nonwoven	Velvet (top), shinny plastic (bottom)	High	30 g	150-160°C	8-12 s

TOOLS¶

double-sided tape, baking paper, acrylic sheet (1 mm), tweezers, scissors, heat transfer vinyl

PROCESS¶

Material	Thickness	Blade depth	Force	Speed	Passes	Cutting time
Baking paper	0.1 mm	1	10	5	1	2 min 3 s

SILHOUETTE CAMEO

HEAT PRESS¶

PROCESS¶

- Remove plastic layer of the heattransfer vinyl fabric. Place your baking paper with the geometry on the top of the vinyl fabric and cover it another one. - The fluffy side outside, the shinny one inside. - The shinny one will melt them together. - Use heatpress with the parametres below. Do not forget to use a baking paper - one layer on the bottom and one on the top. - Let it cool down on a flat place - you can put a book on the top.

Name	Temperature	Time
Heatpress something	130ºC	30 s

RESULT¶

| INFLATING |¶

TOOLS¶

plastic pipe, shyringe

* Put the plastic pipe in the hole you kept as an opening. Maybe you will need a scissors to make it bigger. You can inflate your prototype using a shyringe or by mouth. Probably you will also have to press it more with our fingers to avoid the air coming out.

FABRICADEMY SOFT ROBOTICS from PETRA GARAJOVÁ on Vimeo.

RESULT¶

REFERENCES¶

| SILICONE |¶

3D PRINTED MOLD¶

Filament	3D printer	Layer	Temperature	Printing speed	Printing time
PLA white	Ender 3	0.3 mm	210°C	30 mm/sec	6 h 10 min

SILICONE RECIPE - 01¶

TOOLS¶

3D printed mold, textile, spoon, weight, 2x measuring cups, gloves

A.part	B.part
300 ml	10 ml
(ratio 1 000 g)	(ratio 20-40 g)

PROCESS¶

* Measure the proportion of silicone you want to use in two separate cups. When you will mix A. and B. part you have approx 20 minutes to work. Otherwise, the silicone will be too thick. * Pour the B. part into the cup with A. and mix them thoroughly with a spoon. Make sure they are mixed very well. * Take your mold and start slowly pouring the silicone slowly into one of the corners. To avoid bubbles in the silicone, only pour it on top of the porous silicone. Be careful - do it slowly and keep the cup high. * Place it on a flat surface and add a little bit more silicone to fill all empty corners or gaps. * Hit the table several times to flush out all the bubbles. Use a pin to remove them from the surface. * Place an acrylic sheet under the piece of textile tbe used as (non)inflatable bottom layer and pour the rest of the silicon on top. Rub it with a spoon.

RESULT¶

Conclusion: 1. prototype was too thick and the silicone lost its flexibility and it was too hard to inflate.

Viscosity	Curing time	Melting point	Stickiness	Flexibility	Visual	Structure	Color	Strengh
High	12 - 24 h	Fireproof	Low	Low	Opaque	Water resistant	White	Low

SILICONE RECIPE - 02¶

TOOLS¶

3D printed mold, textile, spoon, weight, 2x measuring cups, gloves

A.part	B.part
50 ml	50 ml

PROCESS¶

* Measure the proportion of silicone you want to use in two separate cups. When you will mix A. and B. part you have approx 20 minutes to work. Otherwise, the silicone will be too thick. * Pour the B. part into the cup with A. and mix them thoroughly with a spoon. Make sure they are mixed very well. * Take your mold and start slowly pouring the silicone slowly into one of the corners. To avoid bubbles in the silicone, only pour it on top of the porous silicone. Be careful - do it slowly and keep the cup high. * Place it on a flat surface and add a little bit more silicone to fill all empty corners or gaps. * Hit the table several times to flush out all the bubbles. Use a pin to remove them from the surface. * Place an acrylic sheet under the piece of textile tbe used as (non)inflatable bottom layer and pour the rest of the silicon on top. Rub it with a spoon.