I did do some research on this topic on past threads, but didn’t find a clear answer to my exact question.
My question is regarding the sanding or smoothing of x-ray blanks. I just received my first ever x-ray blanks.
Can I wet sand them without a power wrapper? Also, for those that have sanded them, do you feel a difference in the crispness or action of the blanks?

You could have gotten many of the blanks in a mirror finish, which is more of a buffing the edges off instead of sanding. I have had no problem wrapping raw blanks, so I leave them alone. Next one a P700, I see no real issue, the ridges are smaller than some have been in the past.

I’m with Spencer, the raw blanks will wrap fine and really don’t need sanding. However, with that said, I have also sanded a number of them to remove the ridges. I wet sand by hand and do not use a rod lathe. Basically, I use 600 to1500 grit wet/dry sand paper (the black stuff) and wet sand. All you need is a bucket of water, the sand paper, and your hands. Wet the sand paper in a bucket of water, then wrap it around the blank and begin sanding. Just gently stroke the sand paper up and down the blank while turning with you other hand. When sanding, the resin will come off turning the water milky white. Sand until the blank feels smooth, and/or the water starts to turn grey. When finished wipe the blank down and, if necessary, smooth out any remaining rough spots. This is very easy to do and only takes a few minutes to get the blank smooth. Using this extremely fine wet/dry sand paper prevents damaging to the blank. It’s almost like buffing the blank smooth.
Norm

Thank you!! I am going to try sanding one.

I doubt if one could measure any physical difference between before and after sanding unless one got carried away and excessively sanded them. The only attribute that could be reasonably expected to change is True Natural Frequency, but I doubt even that will change. It's easy to do , so you might want to consider it.

The only negative I have experienced with the ridges on X-rays was with my homemade wrapper that I used polyethylene strips for the rod to rotate on. The crisp edges of the polyethylene would catch on the ridges while wrapping. I replaced the polyethylene with felt and no more problems.

I use the exact process Norm outlined and have sanded roughly 15 so far without issue. The ridge resin is white, so it's easy to tell once you're done. I also use 600 followed by1500 grit wet sand combo. Takes about 10 minutes or so.

You can wrap with the ridges no problem, I've done quite a few. I do feel like I get a better packed wrap with a smooth blank.

The only real downside to the ridges I've seen involves tip wrap with very light braided lines, the ridges want to grab it.

If you sand, stop as soon as the sanding residue goes from clear (resin) to black (carbon). Also keep in mind that altering the blank's original condition can void a warranty. When in doubt, contact the maker and ask.

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I completed both blanks. I used 2500 grit wet to be safe as it was my first go at it and didn’t want to mess up. It worked just fine and they both turned out good. Thanks all for the awesome detailed instructions! Much appreciated!