we had a little time so we made an Adobe Photoshop Action for 1170 Grid System. It creates a document 1200x600px and draw guides and layer with columns for 12 column grid (1170px wide). Hope you’ll find it usefull for your future designs :).
Hi cippo, Thanks for the guide. I am using “guideguide” from couple of moths and i found it very useful when there is no other way. But still you can find some Photoshop file that is designed to work with 1170gs and i hope it’ll be easy to find as “Twitter bootstrap 3” is in same grid system.