I need to find some time to weave on my loom.
One link led to another on the internet and I found this neat site where I can generate a tartan pattern. This free online program lets you add different colors and select the number of threads for each. It then calculates the total number of threads for a repeat and the width of that repeat based on a 16 oz or 13 oz wool yarn. I think it's for people to custom order tartans made from a commercial weaving facility, but I think I can certainly use it to create some fun plaids and tartans for weaving on my loom. Here's a simple black and red plaid pattern I whipped up. It's made with 16 threads of black, 16 threads of red and 4 threads of black: