Creating Seamless Textures, for Max in Photoshop

Scanning Found Textures:
1. Group samples on the scanner (this is called "gang scanning.").
2. Set scanner resolution at 150 PPI minimum.
3. Scan all textures
4. Save file as .tif format.
5. Open in Photoshop (for digital images start here).
6. Set the rectangular marquee two "fixed size" in the option bar.
7. Set the size to 256 by 256 or larger (512 by 512...).
8. Click on the area of texture you want to isolate -the marquee will automatically be the size you specified.
9. Then use the following commands to place texture into a small file:
Control C (copy).
Control N (new file). This will be a new file exactly the size of the selection.
Hit "Enter"
Control V (paste).
Control E (merge layer down).
Control S (save) this will save your new small texture file in its own document.
Save as tif, jpeg or targa.

Making Your Pattern Seamless
1. Start with 256, 512 or larger square of texture (scanned painted or photographed).
2. Select All > Filter > Other > Offset
3. Set fields to off the pixel number it shows (for example, if you chose 256 square set fields to 128 each) .
Seems will appear in your image.
4. Use a feathered marquee, a rubber stamp or other methods or brushes to remove seems.

To See Tiling
1. Select All-Edit > Defined Pattern
2. Create a new larger document.
3. Layer > New Feel Layer > Pattern -name the layer and press OK.