Sorry I thought it was clear that the attached photo was a stock of aluminum.
Ridging would mean that the spindle isn’t square, right? My issue is that at certain parts of the X axis, there is a minor variation in surface finish. Some probably 3/8” in length. Others down to a 1/16th maybe? This leads me to believe that it’s something with the V wheels themselves.
For example, a flat spot on one of the top X wheels would tilt the spindle ever so slightly that direction causing the minor variation in angle being cut repeatedly along the Y axis like I am experiencing.
If it was the spindle alignment itself, wouldn’t it look the same over the entire surface area of the stock?
I am getting the same effect as the screen shot posted of one of Richard’s projects. And I’m sure that we can say with confidence that his spindle is square.
This is so minor that it is only evident on a surface finish like aluminum. If you’re cutting wood and plastic, you’d never know that this was happening. But on aluminum, it sticks out like a sore thumb and I’m wanting to leave the parts unfinished.