Check out my other instructable similar to this : https://www.instructables.com/id/T-Shirt-Folding-Machine/
Step 1: What You Need
A few long pieces of cardboard
Scissors/ Box Cutter
Big Tape/ Duct Tape
A Tape Measure
Step 2: Measuring and Cutting the Pieces
2 pieces of 11 inches by 13 inches these are pieces A
1 piece 44 inches by 13 inches this is piece B
1 piece 22 inches by 13 inches this is piece C
Using the marker, trace the dimensions and cut them out
Step 3: Assembly
Both A pieces are to the left of piece B, and C is to the left of B and below A.
Once they are laid out, tape both A piece together. Tape the bottom A piece to the top of the C piece. Then tape the top left side of B to the top A piece. Make sure not to tape any other areas.
It sounds confusing, but the pictures really help
Step 4: Using It
This also works great with shorts, do the same thing, except move the shorts all the way to the top.
The small problem mentioned above is the stability of B to A. Since 3/4 of the left side gets folded up, that pieces only 1/4 that is stationary. Piece B has to be taped to that. So piece B can be a little inaccurate. There are two solutions, either flip piece B faster and further, or go to the next step for an optional upgrade.
Step 5: Optional Upgrade
This is my entry for the gorilla glue contest so please vote for it.
Also check out my similar instructable: the T-Shirt Machine: https://www.instructables.com/id/T-Shirt-Folding-Machine/