Hi!
You can call me Sérgio, Hipnotic was the unfortunate nickname I chose about 10 years ago when I registered on TTD, I just stuck with it when I signed up here just for the sake of continuity.
Don't want to get in an argument again about the multi core pieces but the other days I was holding a recent Xiom blade and clearly saw a multi piece core. I have been using a single piece core for Ayous for a long time, and if you look closely to some of my recent builds you will also see a single piece Kiri core. You will still see the 2 piece core from time to time because they are actually 2 different species, the "old" is lighter while the "new" one is a bit denser and closer to Ayous. But the good news is that I can get this wood in boards wide enough to make a one piece core.
Regarding your question, I suggest you take a look at this post I made on my Instagram account: https://www.instagram.com/p/B_wwcDGHOOS/" rel="nofollow - https://www.instagram.com/p/B_wwcDGHOOS/
It talks about the difference between stiffness and hardness, which is basically what your question is all about. By discarding the medial and top plies beneath the handle you are drastically reducing the stiffness of the blade, while the hardness is the same. This will feel very weird, it will feel flimsy but hard at the same time, like swinging those hammers with flexible handles, so the control will be very compromised. Also, the medial ply is responsible for a lot of the tactile information you receive on your fingers and hand, because of the orientation of the wood plies. Without it you would get less feedback. Not a very good idea in my opinion.
But the opposite can actually work and there are a few examples out there with this concept like the Butterfly Defence 2. They increase the number of plies beginning just above the handle, which increases the stiffness but retains the hardness.
------------- SDC Handmade Blades / http://www.sdcttblades.com" rel="nofollow - www.sdcttblades.com / Insta - @sdc_tt_blades / Facebook - @SDCblades
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