Have seen a couple of razor hones recently and both are patterned with "holes" in the centre.
Have had a quick look through the Hones Wiki and can't find any info on Why? or anything similar.

Sorry if this has been asked and answered somewhere else - I just can't seem to find it.

I guess there must be some functional idea behind them. Just seems strange when everything I read about hones is aiming for flat and lapped.

Thanks to those more knowledgeable than I