Issue with tiling wood texture

[John.McWaters]

I have an non-tileable board texture (12 feet by 1 foot real world scale) that I would like to apply to a box using the Corona Tri Planar component. I have it setup with a UVW Randomizer going into the Tri Planar component to make it seamless. The Randomizer is setup such that each tile is randomized with movement from 0 to 1, and the rotation is in 180 degree increments (so the wood grain all runs in the same direction). But after setting it up how I think it should be, I keep getting seams in the texture. I've attached images of the material setup and result as well as the max file and texture.

[romullus]

Your texture is not seamless in one axis. You need to remove the seam in photoshop, otherwise it won't work. I also suggest to modify randomizer settings a bit - remove randomization in V axis to regain some clarity and introduce horizontal and vertical flip to gain more randomization. See attachements for comparison of your setup vs my setup and randomization settings.