I agree with both
Morning Glory and
flyinglentris. In addition, there are many, many options for chopping fresh vegetables.
I recommend that you search for the various type of choppers on YouTube and watch videos to see how they are implemented and which ones work for your chopping needs. There are SO MANY options available.
For me, in addition to having a food processor or Chef's knife, I use the following...all these are manual choppers.
1. The drawback to this type of tool is you can only get one size cut. It is also difficult to use if you have trouble with hand strength. I find myself having to put both hands on it and using my upper body to push it through. You also have to cut the vegetable(s) before placing them on the chopper.
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2. I just found this item on my search. It is the same type as #1 but with different inserts for different cuts. I probably would have bought this one had I known about it before purchasing the other one.
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3. This one is manual spinner. You just pull the string and a blade chops the contents. You continue to pull it to get smaller cuts. I've only used this type a few times and didn't really care for it because of my diminishing hand strength.
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4. On this one, you press down and blades chop the vegetables. The drawbacks are food can sometimes get stuck in the blades that you have to dig out. This usually comes from not pressing it all the way down (which is hard to know when pressing) but it's a handy tool.
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Hope this helps!