When you get ready to print a pattern make sure the fold line is as thin as you can while still able to see the line. Fold the pattern as accurately on the line as you can ( a ruler with a cork strip helps to keep slipping to a minimum ) , once the fold is started gently continue to fold to a sharp crease. Unfold the crease to about 120°, spray with adhesive, start the pattern on one edge and holding that edge with one finger, carefully set the pattern down the crease. Starting at the center of the pattern, press one side down working from the center out. Once one side is down, repeat for other side.
Once you cut the first side ( I cut the wider of the two sides first ), you will need a way to hold the first cut in place while you cut the second. There two common methods to do this; 1. Use a jig. 2 tape the pieces together with clear packing tape, the tape has to be clear so you can see the pattern. Press the tape firmly, otherwise sawdust can get underneath the tape and obscure the pattern lines.
Troubleshooting:
If the cut piece will only come out one direction then the table is not square to the blade.
If the cut piece will not come out either side, then the blade is bending inside the cut; a dull blade, not enough tension, or the wrong blade style can be to blame.
If one side is thinner than the other then;
Blank is not square, the pattern is kitty wampus, the table is not square to the blade, all of the above.