Just got a new TI and it definitely isn’t sharp enough. During the first shave I compared it to my older shavette with basic Wilkinson blades. The TI is pulling my hair and it’s unusable. It doesn’t explicitly say in any of the papers it came with that it’s “shave ready” which I didn’t expect.I sent my brand new Thiers Issard off to have it professionally sharpened because I didn't think it was sharp enough. It was supposed to be shave ready and it would shave, sort of. But it would drag and I had to force it to cut a few times. I ended up with a weeper one day and two the next. My other straight razor, sharpened by this professional near me, shaves wonderfully. So, thinking that if I had a DE blade that shaved like that I'd change it, I sent it off to have it honed on some smoother stones than the factory uses.
Now, perhaps people have different ideas of what sharp is. Perhaps the good folks at TI that made my gorgeous razor have a different idea of sharp. I don't know. When I want sharp, I want something that has a smooth edge, not coarse, and will whittle hair.
Will have to send it to a professional until I learn to sharpen it myself.