Thiner Grid Lines

Note: This tutorial is done by Adobe Photoshop 7.0

1. Open a new window with:

Width:150pixels
Height:150pixels
Resolution: 72 pixels/inch
Mode: RGB color
Contents:White

Go to Channels Pallete Window > Show Channels and make New Channel as shown on the left.

2. Next make a Fixed Selection with Rectangular Marquee Tool (M) 15X15 pixels and make a selection. Paint it with white.

3. Rectangular Marquee Tool (M) still selected move the selection 1 pixel to the right and 1 pixel down [do it with arrows on the keyboard]. Press Delete.

Now go back 1 pixel up and 1 pixel left [come to the previous position]. And go to Edit > Define Pattern, enter the name and press OK. Deselect it, Ctrl + D.

Make a new Channel again like shown below.

4. Select the Paint Bucket Tool (G)

And select your pattern from Options Toolbar

Paint it with your pattern, you should have same like on the left.

5. Press Ctrl button and Click Alpha 2 channel. (Ctrl+Click Alpha 2)

6. Now Go to Layers palette and click on the Layer 1. Choose the color for your grid.

Select the Paint Bucket Tool (G) and don't forget to select Foreground for Fill, from Options Toolbar.

Next paint it and Deselect (Ctrl+D)

7. And finally what we have is thin Grid Lines!