- 1). Fill a quarter of the measuring cup with glycerin. Fill the measuring cup the rest of the way with distilled water. Glycerin will settle at the bottom, so use a stirrer to mix it with the distilled water.
- 2). Pour the cup of mixed glycerin and distilled water into an eye dropper using a funnel. There will probably be more fluid then the eye dropper can hold so you should have some extra left over.
- 3). Use the eye dropper to put a few drops on top of the heating element in your model train locomotive. The mixture will create different amounts of smoke, based upon the solution's mixture. Adjust this accordingly if you want thicker or thinner smoke.
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