Enlarging PRP doesn't always help

dusterbing the peace said
Genuine question, not posing as argumentative or anything negative-have you (or anyone else on here) tested different finishes?

The follow up, and actual nature of my question is specific to the ribbed CNC finish vs a smoothed surface. Have you ever done before and after of flowing a CNC surface, then smoothing it out to see effects? I would suspect that not many people would risk (or pay for) the chance of losing flow…but needed to ask. I have a set of CNC heads and have wondered what having them hand finished would do.

A BIG thanks to all of you for your continued shares of information!!! I don’t see these kinds of discussion elsewhere.

I'm glad you brought this up. I hit me that I have a single Speedmaster CNC head that I bought on Black Friday just for the purpose of flow testing. I was so disappointed with the head that after one flow test I've put it up and tried to forget about it. This is the perfect opportunity to make it useful. I'll try to clean up a port and compare the before/after.