If you are a maker, and you do a write up of 400 words or so, about why your knives are something a KI reader would be interested in reading about, if it is something new, and different. If you words are close to coherent. If your knives have eye appeal, and have well done photographs, and you can produce five or six of said photos.
If, and only if, you fulfill the above criteria.
And then (this is the crucial part) if you get off your duff and submit said photos and words to a KI editor on a CD, flash drive, etc.
You may stand a good chance of getting in print in Knives Illustrated.
Do NOT do the above, and your chances of hitting print are greatly reduced.
Please note a CD, SDcard, or Flash drive is ok. Cramming an email box with a dozen 10 meg photos that no one knows is coming and causing all the other emails to bounce is NOT, and will almost certainly get your photos deleted without even being viewed.
The worst mistake a knifemaker can make is to sit behind a table with their arms crossed, not speaking to people walking by, waiting to be discovered by a writer or editor. Making a good knife is not enough. A knife and the maker have to be interesting--to a reader. Convey that to a editor, and you get into print easily.
If your ship is not sailing in sometimes it helps to swim out to meet it.
Of course if you're too busy to to learn how to do decent photos, or not willing to pay a professional for superior photos, and too busy to take the time to write something, or if you make boring knives that look like everyone elses, and don't read knife magazines because you can post your photos free on internet sites, or the editor misspelled a word a couple of times... well, that is certainly a choice.
Obviously you can see in KI that Chuck's talents extended beyond making an interesting knife.