Examining a Pyrex flask

Many of our projects spring out of a flee market purchase. We love flee markets. You never know what you will find and you feel like all is possible at an affordable price. This Pyrex flask was used for a large number of projects. First we calculated the volume inside the flask. Then we filled it with water and measured if the amount of water agreed with our calculations.

Measuring.
Reality check.

Then we examined the magnifying effect.

Magnifying effect.

Then we tested how effective the firestarter was.

The Firestarter is working!