Is it bad to smoke out of a homemade glassbowl/stem, would shards come off when lighting it and me inhale them? has anyone ever made a glass bowl by breaking up glass to get a bowl shape such as breaking up a oval shaped lightbulb and making a bowl from it?
If you're breaking glass and putting it into a bowl shape, then yes there is a good chance of getting glass shards or remaining filament from the bulbs which could be dangerous. Just go to your local head shop and spend the 10$ on a small metal bowl.