I use SolidWorks from time to time but for the moment, mainly for flat surfaces, worktops, furniture and others... Now, I would like to model a Japanese knife, the guyto, but I am having problems due to my lack of experience...
Description of a guyto
In the top view, from the heel to the toe, the blade of a gyuto is flat in the handle and goes at an angle to the tip
In profile view, the blade has 3 different bevels, a flat followed by a bevel of about 40° to 35° and the cutting edge over 2 mm of about 25° to 30° all in a shape... of blade...
This is the beginning of modelling (SW 2020). If it's just for a performance, I modeled the blade flat by 3mm and then swept the grind. Otherwise, if you want to vary the thickness of the blade towards the tip, maybe with a removal of material from the top plane would be suitable. Guyto.SLDPRT (643.8 KB)
I went back to modeling my Gyuto (to start with a profiled blade) and I'm stuck on the removal of material by scanning... I can compare with your file and no way to see what's blocking...
I don't have an explanation for this blockage, it just seems that a removal of material by scanning a blade that gradually thins along its length does not please SolidWorks...
Attached, a modeling proposal on a principle quite similar to that proposed by @opiep27, but with a first smoothing function that allows this thinning (SW2022 version).
First of all, it seems to me that the best method is the @m.blt method because this type of knife is made by forging and that's why you will notice in the @m.blt model a 3D sketch (symmetrical with respect to the core) that gives the best profile for the whole.
The model
But I'll still explain why the template you posted can't be suitable.
I apologize for being a little dry, but it's a set of mistakes
1°) you give the almost definitive shape from the start which will create several problems for you
Thank you very much m.blt, I opened the file it seems to correspond to my needs, I will take a closer look tonight because I don't know (yet) the smoothing functions...
I would make the blade in stock removal, I have neither the equipment to forge, nor the skills, everyone has their own job, I am a cook I just want to do a little SolidWorks exercise on this theme, the feasibility will be done in my forge, well in my garage And if necessary, I would have the blade forged on a phase 2, I would love to have my knives forged
otherwise point 1: I take your word for it point 2: I thought I would make a symmetry when I finished a side (wrongly I guess...) point 3: I discover the guide curve
In any case, thank you to everyone for the help received, it's cool
No, congratulations to opiep27 
Hara than a harakiri (腹切り) or seppuku (it's better to laugh, shaking your stomach)