Aluminum Tin Metal
Heavy Duty Clippers
Glue Gun with Fabric Glue
Step 1: Buy yourself a roll of aluminum tin available in the roofing section of Home Depot for around $13 (pictured above).
Step 2: Use your clippers to cut off 3 sections of tin, one for thigh, one for shin, and one for knee. We will then take these sections and cut them down into their exact size listed below, and round the corners.
Shin: 5 1/2" tall x 4" wide
Knee: About the size of the bottom of a cereal bowl or 4" x 4" with metal flaps on side
Thigh: 4" tall x 5 1/2" tall
Step 3: Now you will want to lay all of your armor pieces out and contour your shin and thigh pieces to match your knee piece by cutting out half circles on the bottom of the thigh piece and the top of the shin piece. Pictured below
Step 4: Now that our armor is all done, you need to put on your pants to mark the exact positioning for your armor. The most crucial piece will be the knee piece which must go on the bottom half of your knee so you can bend freely. Mark the position with a fabric marker or sharpie and then place the shin and thigh piece above and below accordingly allowing enough room in between so they do not overlap or clash when your legs move.
Step 5: After marking your armor position, we can now attach them using the glue gun just glueing the right and left edges of the armor to the jeans. An alternative to glueing could be using velcro to attach the metal to the jean so then the metal pieces are removable and you could wash the jeans easily.
VOILA! YOU'RE DONE!