This Instructable will cover the steps necessary to safely make an alcohol lamp from easily obtainable materials.  It can be used to create a sterile space for microbiological experimentation at home, e.g. to culture yeast from a bottle of unfiltered/unpasteurized beer.  

I made it at TechShop (techshop.ws).

Step 1: Safety is always first

Safety is the # 1 priority when working with flammable materials.  You and you alone are responsible for your own safety and the safety of those around you, especially when you are working with flammable liquids and fire.  Work in an area free of flammable objects (e.g. the can of fuel) and always work with a fire extinguisher nearby.  Be smart.  Don’t burn your house or apartment complex down.  Never leave a lit alcohol lamp unattended.
I like the quick nature of building this. Would a metal screw top from a cheap wine bottle improve the safety?
Also, a cork that fits well can help to improve safety in this respect.
I don't think it is necessary. I have never had an issue, however I just read (on the interwebs) about some lamps catching when the cork/lid isn't fully on. If you are using a cork I don't see why a wire cage would hurt -- if you are using a baby food jar when the lid would be screwed on anyway. Either way, the vent hole is a must, to de-pressurize the fuel container as fuel is used up.

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