A while ago I did a post Woven Table Runner in which I explained how to use Solvy to help keep the lattice work together before stitching. This method worked well and the Solvy easily washed away after stitching.
However I have come up with an easier method that does not require the cost of the Solvy.
Iron interfacing to the back of a large piece of background fabric. Mine is a twelve inch square.
Lightly fold this piece in half and cut lines into the fabric (through the fold) but ending about 3/4 inch before the edges (right on the photo) of the square
Now the strips in one direction all stay together!
Weave interfaced coloured strips, any width, through the grey channels.
Consider the possibility of a 3D woven effect ....
Or consider 'curving' the coloured strips slightly...
Consider trimming the shape other than into a square .....
P.S. I have skipped number eight in this series because it is unfinished and I have been unwell. Number nine was sitting, almost complete, in drafts so I decided to post this now instead.