In this assignment, we casted and molded fingers, and post-process them with colors.

We cast two fingers as hooks, post-processing the fingers to make them look presentable and finished. TAs and professor helped us to use the alginate and mix the powder together with warm water and stir. When it began to harden, we inserted a finger or your hand into the alginate. After it solidified, we carefully pull out your hand. Then, mix the casting material and pour the liquid into the alginate mold.  When pouring the finger, include a screw embedded in the finger so that it can attach to the wall. At this step, one of screw was dropped thru the hole on the tape into the liquid, so there was a screw embedded at the molded finger tip, which might be invisible when we painted.

Once the casting material has solidified, carefully remove the finger hooks from the alginate mold. We unmolded two fingers and let it dry on the paper towel for a few days because it was wet at that time. After that, we spray painted with gray and red paint as post-processing and leave them dry on the table to make texture on the finger refine. Also, we noticed when we spray painted the finger, the paint was little soaked inside the finger, so we have to paint a few more layers to make the color solidify on the surface.

I collaborated with Annanya in this assignment, and we had two fingers with different color as shown below.

Cost analysis

Cost Type	Cost	Price	Source	Quantity	Total
Materials	Alginate	$0.70/oz	Dickblick.com	2.65 oz	$1.85
	Plaster	$1.94 /lb	Homedepot.com	0.09 lb	$0.17
	Silicone cup	$0.90 /cup	Amazon.com	1 cup	$0.90
	Spray paint	$6.19 /can	Target.com	0.1 can	$0.62
Labor	Molder/Caster	$15.75 /hr	Recruiter.com	0.5 hr	$7.87
	Spray Painter	$17 /hr	Ziprecruiter.com	0.25 hr	$4.25
	Prototyping Engineer	$39 /hr	Salary.com	0	$0
Overhead	Facility Cost (Machine Time)	$4 /hr	Homedepot.com	0.5 hr	$0.2
	Quality Control	$24.5 /hr	Indeed.com	0.25 hr	$6.125
Total					$21.985