So, novice knife maker here... and by no means a marriage expert. The only qualifications I have are 30 years of marital bliss, a Masters degree in education, but with a minor in family counseling.
IMO, you have both been neglecting your marriage.
Nothing you can do on this earth is more important than your marriage. Even the relationship with your children, which should be wonderful, should take a backseat to the relationship you have with your wife. No hobby, no job, no nothing is as important as your wife. And from experience, if your wife does not know that she is the most important person or thing to you in the world, deep in her bones, or if she feels that something else is more important than her, there will be problems. Again take this with a grain of salt because I am no expert, but fellow-knife maker, you need to court your wife. You need to date her on a regular basis, and you need to treat her like she is your queen. Because she is. You need to remember why you married each other in the first place and you need to go see counseling together. You've got deeper issues than knives.
The reason she is acting the way she is his because she is screaming for attention, and because you love knives so much (we all do!) she has chosen knives to use against you. She's trying to hurt you where it counts, to get your attention to pay attention to her. She may think that you are married to your knives instead of her and she's jealous. So you need to decide which wife you want, and if you want to become a better husband or if you want to become a better knife maker. No success in any job or hobby can compensate for a failed marriage. And a divorce, while failing to change the flaw in ourselves that caused it (because all divorces are two-sided) will not solve anything because the problem will just continue on into the next relationship. Making a fantastic marriage is work and takes practice, just like making knives, but the rewards are so much more gratifying and rewarding than a piece of sharp steel that will one day return to the dust.
Each of you is exhibiting symptoms of hurt and pain.You are spending a lot of time away from your wife (her perception) and she is being an unreasonable nag and bitter towards you (your perception). Each of you have deep and unmet needs, and as soon as you admit that you married each other to fulfill each others needs, you will begin to repair and become happy as a couple together.
You mentioned doing chores and dishes for her. This may be a how are you like to express love and appreciation, but it may not be the way that she wants to receive love and appreciation. What is her love language? Yours is obviously having people do things for you. But, how did she feel appreciated and loved? Is it words, is it physical, is it spending time with her? You got figure that one out, because just doing dishes for somebody, which is what you want to do, when she could care less about the dishes and just wants your embrace and kind words, will mean nothing to her. You got find her love language and you've got to treat her like a queen using it.
Every very wife needs, really needs, to be told that she is beautiful and that her husband loves her, every single day. With words.
Every husband needs, really needs, to be told that he is appreciated for providing and for protecting his wife and family, every single day. With words.
Jospeh de Maistre, French diplomat (and one of the FEW French people I ever quote) once said, "Every nation gets the government it deserves." I've often wondered if the same holds true if we substitute the word government with marriage.
Marriage is hard work. Go to counseling together and rip off the band-aids that have been in place for years. Expose the wounds and start the healing. But first, put down your knife, wash your hands and ask your wife on a date. A real date. Home Deport isn't allowed.
Edit: I don't really hate French people.