I have a little (4″) stamped Oxo “Chef’s” knife. I use it quite a lot, since it’s short and easy to handle. Good for working with small stuff, while still allowing you to chop (unlike a paring knife).

Like most cheaper knives, this one doesn’t have a full tang in the handle Here it what it looks like with the Oxo rubber grip yanked off:

Can you guess where the fatal design flaw is? If you guess “the hole” then you would be correct.

That hole is there for the Oxo red logo, and it is what holds the plastic tang to the rubber grip. It’s also a disaster waiting to happen, as it weakens the handle and allows water to seep in.
My best guess is that there has been a hairline crack in there a while, and water has gradually been eating away at the tiny bit of metal in there. Finally it gave way, resulting in a break — and a knife that felt like the handle was made of a hotdog.
My first thought was to drill out a hole and try using a cut-off aluminium nail as a replacement tang.

Well, I tried drilling the hole, but did it freehand. Meaning that the two didn’t line up, would never line up, and would result in no strength improvement. Oh well, time for more drastic measures.
Time to make my own handle:

Off to the mini lathe I went. I use this lathe for small scale wood turning. Stuff like pens, candle sticks, and — in this case — a round handle for a knife.

The first piece of wood was pretty, and smelled very nice, but was very prone to chipping out. It was also very short, meaning I didn’t have enough stock on either end to cut off once the rounding was complete. (Long story short: it’s a pain working with very short stock.)
After a while, and many wood chips later, I gave up and started with another type of (again, unknown) wood.

This one turned a lot better. Very little chipping. And it was longer, so I could cut off any excess once the lathe work was complete. Here’s a closer shot, with some wax applied:

I also tapered down one end, which is not shown in the photos. Once the lathe work was complete, I cut off the ends and then drilled a hole for the blade (what remained of the tang). I then press-fit the knife blade into the new handle.

I’ve applied an oil based stain to the handle to protect it, and am now giving it a couple of layers of Johnson’s wax to help protect the wood from drying (from detergent). I’m not sure how long the press-fit will keep the blade tight. If it gets loose, I’ll probably fill the center with epoxy and see how that holds.
Why all this work for a cheap (<$10) knife? Well, like I said, it’s one of my favorite and most useful knives. And I’ve become a big fan of good stamped knives. Frankly, I’ve given up on expensive forged knives. I get better cuts out of $30 utility stamped knives than any of my forged stuff. Heresy, I know, but it’s the truth. Plus, I don’t feel quite so bad if I screw up a $30 knife. They are meant to be used, after all.
Another thought: It’s about weight. When I’m in the shop I use my little Makita 10.8 V drivers all the time — they are light, so you don’t feel fatigued holding them all day long. Same thing goes for knives. Why hold a 12 oz knife all day long, when an 8 oz works just as well? After all, the edge of the knife should be doing the cutting — not its bulk.
And there is a personal reason why I want to keep this little knife around. Evelyn and I bought it when we lived with her parents — right when we had everything boxed and were waiting for their house to close before heading to Puerto Rico. So, it reminds me of those times. Trying to make little meals in their basement with only the fewest of supplies.