I also recently got a set of the new ones and I’m putting mine on as we speak.The updated Michell stylus brush replicas from MachineCraft feature improved knurlings and brighter finishing like the real deal.
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Here's the previous version for comparison.
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Needless to say, I promptly installed them on my Anti-Security Blade and applied a light wash of black oil to liven them up.
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To my eyes, the shine on the new rods adds to the 'mechanical' aesthetics and provides a much-needed contrast against the overall matte-ness on the prop.