Boron Carbide (BC) is in, made up a quick test chest plate using a small amount of Kevlar chop and one sheet of carbon fiber.
Needed to see what effects BC has on Onyx. Also did test on embedding CF in the first layer of onyx. That did not go very well it deformed the mold from pressing it into the onyx it also left a air pocket. so looks like I will have to go the slow way on the main chest plate with 2 layers of resin then the carbon fiber.
Also tested mixing methods for the BC with the resin in the mixing cup = drops out does strange clumping. Adding it to the mold cavity seems that BC does not like onyx being dumped on it. Leaves dry area's that will be weak inside the object being made.
Side note BC also seems to add texture if its in the first layer of material. One side of the chest plate looks grains of BC are sticking though.
Also on the Needier rounds front for the first chest plate I acaded them up and they are off for rapid prototyping. They have a hollow cavity up the middle for lighting or coloring, along with a plug that is also clear with a wire hole or screw mount with a .5 inch rod allowing for it to pass though the chest plate.
Also made up some new truck clips that will be rapidly prototyped as well. They will be made of Black UV activated plastic, and a set made of a flexible nylon polymer.
Now as for ballistic performance BC seems to work if its thick enough with out MWNT's but the onyx brakes with smooth edges where with the MWNT's it had jagged edges.
Now keep in mind that this chest plate was just a test and did not have any sheets of Kevlar and only one sheet of carbon fiber. It was for testing on how to work with BC. The center of the chest is the only place with any thickness did not want to waste more supplies then I need too.
used ammo
9mm 147 grain
45 acp
12ga magnum double 00 Buckshot
12ga armor piercing flechette
stopped
9mm x2
12ga 00 Buck 1 pellet only one that landed in the target area of the chest all the rest landed in the thin parts of the armor.
12ga Flechette's no penetrations also side note it also stops birds **** with little dmg.
Penetrated -
45acp
9mm x 2 shot low of the target area and it grooved it at the bottom. Other shot hit on the left side of the cest plate, armor thickness was .4 inches.
picture show follows.
You can see part of the copper jaket lodged into the chest armor, as well as the Flechette's
Needler rounds
ODST Truck Clips
repaint of first test bp that was shot with a 22lr HR
Also made up a med ref in vector for giggles getting it and other logo's made up vinyl.