I'm sure it's because we don't let him have them but he is always reaching for knives and saying he wants to cut. When I was making sandwiches, he watched me slice the cheese. I gave him a hunk and a toy knife. The plastic wasn't cutting it (no pun intended) so he wanted Mommy's knife.
Melissa & Doug has two wooden cutting sets. The knife is - obviously - dull and the wooden foods are held together with Velcro so it actually seems like he is cutting the food.
Would this be a good diversion or should I be downplaying the cutting fascination until it passes?
ETA: He's 22 mo.
Re: DS is Obsessed with Knives. Good or Bad Solution?
My neice (just turned 4) and nephew (just turned 2) have had this set (or one similar) for a while...I think my neice got it for her 3rd birthday? Anyway, they LOVE it. And my nephew has a total knife fascination like your son. My nephew will say "mommy, cut?" when my sister is cutting something and all she has to do is tell him to go get his knife and cut his food up and he goes right to the toy and starts "cutting". It's too cute! Sometimes she puts him up on a stepstool at the counter next to her and lets him "cut" his toys while she does dinner prep. He is very happy with that diversion!