UV Mold Free Bread Box
This project came from a challenge I was given by a fan of InventGeek. Basically they chose the most common place and mundane item they could think of and challenged me to improve it in a practical way. So how do you improve a bread box? Well for starters I how about making it more useful than just a nice place to put your bread and we are not talking about putting a computer in it. After modding out our bread box I think we have come up with something terribly practical. Worst case then we have come up with a really clever science fair project for you your kid to do.
So the goal of this project is to build a bread box that has built in UV system to repress the ability of mold colonies to form. After some research on the web I found that high grade UV bulbs could be purchased inexpensively that are used in food and medical sanitization. So with about 50-60 USD depending on your UV source we can really get this project rolling.
The UV Source:
We picked up a water purifier system off eBay that uses ultra violet lights. We removed the tube and placed it in a standard light housing for our project. Total cost was about 15.00 USD
The Power Jack:
We picked up this power jack at our local electronics shop because it is nice heavy metal. Make sure you match the plugs and jacks to what your power supply will require. 5.00 USD
We picked up at our local electronics store some power plugs with solderable terminals on it so we could make our own cable extender. Perhaps I need to see about having them sponsor us so I don’t feel so bad about there logo on these extremely overpriced parts. 5.00 USD
The Bread Box:
We chose this bread box because it was a simple brushed steel box with reflective surfaces. It also has some holes drilled in the back of it that are great at dumping off any heat that could build up when the lamp is in use. Cost 20.00 USD
The Light Controler:
So we don’t want the UV light on all the time for a few reasons. The bulbs life span, heat buildup and UV light can have a impact on the nutritional value of the foods that it shines on. We found this little unit for about 15.00 USD online. It will randomly turn on and off the item plugged into it at 7 to 30 minute intervals for 7 to 30 minute lengths of time.
The Baking Rack:
We picked up this baking rack at our local super box mart. We used this black one only because it was easily photographed. We recommend using a chrome rack if you can get your hands on one. Cost 3.00 USD
Step one is to take our bread box and figure out where we want to place our power source. We want to try to keep this looking visually pleasing. Another thing to think about is where the heat sources will be. The bulb and the inverters will put out some heat, but ultimately the brick is the highest heat producer.