Last week in class, i had the opportunity to mold my fingers…
I followed the instruction provided in class:
- I got 2 silicon cups, one for making the mold and one for making the rockite for the actual final object
- I mixed alginate to water in a 4.5:1 ratio. i measured out 6.75 oz of water and 1.5 oz of alginate using the scale.
- I then stir it with an electric drill with a stirrer head for around 4 minute until i felt force impeding the stirring. Then I stick my 2 fingers in to create the cavity
- Do not recall how long exactly I put my fingers in, but it was until i can easily remove it out and i cannot press into the mold further on the surface.
- Now moving on to the rockite. I mixed the rockite with 1:3.5 rockite to water ratio as instructed. I measured out 10g of water and 35g of rockite. I mixed it with the electric mixer for a couple of minutes until the solution is uniform without clumps.
- With the rockite poured into the mold, i attached the screws. The flat screw head went into the rockite, but to make sure only a little bit goes in, I put tape underneath and tape it to the side to create tension pulling the screw out, instead of fully immerging it.
- I let the rockite and mold to dry for a couple of days. I demold the finger from the alginate. There were some excess rockite on the bottom so I used a hammer to knock it off, and here is what i got!
I then sanded my piece and spray painted it. I couldn’t find the foam piece but I could a piece of cardboard sticking out of a trash can, so I stuck my fingers there…
I cut off the small piece from the cardboard. There’s no clean up pic because I worked on a trash can…
Materials & Cost
- 2 Silicon cups $0, resusable from OEDK
- electric weight $0, shared from OEDK
- electric mixer $0, shared from OEDK
- 6.75oz alginate = $3
- 35g Rockite = $2
- 2 screws = $0.14
- Labor = $10/hr x 1.5hr = $15
Total cost = $20.14
