I'm using wool batting and if I remember correctly I can have 5" spaces but there won't be that big of a gap anywhere in the quilt. At the most 3" gap. Thanks for all the comments.

A beautiful quilt, and I too like the black stitching.

very nice job!!!

Beautiful. BrendaK

Beautiful quilt!

Here is a picture of the quilt.
[ATTACH=CONFIG]554917[/ATTACH]

Very pretty

great idea...never thought to use black thread in this way...I am working on a stained glass quilt and may not change threads (black for sashing) and just quilt the rest of stitch in the ditch in black.

Wow, that is a pretty quilt. pretty pattern and you did great patchwork.

Nicely done !