I've been thinking about buying one of these but I don't know if they are just a gimmick. Also, if they genuinely work well how good do your bits need to be in the first place to be worth sharpening?

If Harbor Freight is your go-to, it doesn't offer anything specifically made to sharpen your drill bits. However, there are still options that can work.

The professional-use Drill Doctor 750X sharpens standard twist and masonry bits from 3/32” to ¾”. The custom point angles can easily be set anywhere from 115 to 140 degrees.The adjustable material ...

My tool truck guy keeps pushing this tool that sharpens drill bits. Does it work? "Anything that's going to save you time and money is going to cost a little upfront. And that includes the drill bit ...