You may have seen some parts made where the edges are beautifuly seemed together, and usually there is a direction change in the weave at that “seam”. I found a small trick today for a POSSIBLE way to do that.
Say you have a one piece mold but you can’t use a single piece of cloth to cover the entire mold for whatever reasons.
Buy some 3M blue painters tape, green may work too. When your cloth is dry apply the tape to where your cut line will be. Press the tape down to the cloth but you don’t have to hammer it down to the cloth. When you cut along the tape leave only 1.5mm or 1/16" of tape remaining on the portion of cloth you want to use in/on the mold. Now place your cloth in the mold or on the mold and wet it out and lay it down smooth where you need it to be, with the tape side facing up. Wet out even the tape. Wait a minute then use an exacto knife to pick the tape up off the cloth very carefully. I think there should be a clean straight edge of cloth there now with no fraying. I had to do a patch job today and used this method. I did it so the edges of the patch would be clean cut as it will be seen by the consumer.
If you have more to add or take away from this please feel free. 
