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- #21
I like those rainbow looking brushes. How much of a backbone do they actually have?
The backbone on my rainbow brush on a scale of 1-5 would be about 3.5. I find it to have the ideal balance for a synthetic knot.
My APShaveCo tuxedo is a 5 and I can't splay it properly.
I find synthetics in general perform best when the backbone is 2.5-4.
Anything more than a 4, I'm not a fan but less than 2.5 is still ok as I enjoy the extra splay, like the TurnNshave angel hair which is a 25mm knot with the backbone of about a 1 on the scale, relative to my other synthetics, but I still love it!!