Quote Originally Posted by pixelfixed View Post
How do the GS shaptons differ from the shapton pros? or do they?
My pre finisher is a 12K pro,a great stone.
The Pros are really fast cutters with carbon steel & no slouch with stainless. Almost DMT aggressive & as a result I think they are not the ideal for everybody. Same as the DMT's you must not press hard or they gouge the bevel especially at the low grits. The 220 grit Pro should not go anywhere near a razor.
I agree with Lynn they are not as consistent as the GS but I've always compensated by finishing with Jnats. Since I bought my 20k Suehiro & tried straight synthetic progressions my hit rate is not as high but I'll work that out.
I found the graininess in the 8k & 12k at first but it seemed to lap out ok. I'm not sure if the Pro's are harder than the GS but I seem to lap them much less.

The white GS were designed for use with A2 tool steel but work a treat with razors. The composition is really homogenous & they 'seem' a tad softer & slower giving a really nice polish. Mind you 'soft' doesn't mean they wear fast , just a cf. to the Pros

Then you have the grey GS designed for Carbon steel but I only ever had one of those in 220 grit. It was ok for restoration purposes with a healthy slurry but the 320 Pro just eats steel & starts the bevel much quicker on nightmare razors.


tl;dr
Pros are fast & aggressive ~ great for restoring
GS are smooth & consistent ~ great for everyone