Have you ever had to fix a small crack in your windshield, and if so, how did you do it?

I recently noticed a three inch crack in my windshield that splintered from a pre-existing chip that has been there for several years. I want to fix it pretty soon, and I’d like to do it cheaply and without replacing the windshield or having to have it in the shop for an extended amount of time.

Have you ever fixed a crack in your windshield, and if so, how? Was it a cheap, quick fix? Was it effective?