February 25, 2011
Love this concept! They designed a portable radio that would transmit the station from 30-100 km away.
February 23, 2011
We will be designing a community garden for the Las Lomas community using hydroponic or aquaponic systems.
Here are some rudimentary research images and links on hydroponic gardening:
Jason’s Indoor Guide to Organic and Hydroponic Gardens is a website that covers many of the different systems/set ups used for hydroponic gardening. The following image is a diagram of the “Wick System.” Click on the image to go to the site.
Click on this next image to link to another blog that gives descriptions of several hydroponic e-books as well:
February 22, 2011
February 21, 2011
How-To make a “bottleneck” candle with palm wax and an empty plastic bottle:
Alternative candle options using the same bottleneck mold:
To see other studio wax projects, visit the Class Blog!
February 18, 2011
Here are the images of the burning and remnants of the candle with a spiraled wick on the exterior of the candle.
February 18, 2011
One further candle experiment involved securing the wick along the exterior of the mold form. The intent was to melt the candle and leave an interesting wax sculpture at the end, carved by fire. View the slideshow below to see the set-up. The next post will reveal the images of the burning!
February 17, 2011
The candle formed by pouring wax into water burned successfully. Here are the pictures:
February 17, 2011
The burning of the internally spiraled wick was not as successful as hoped. The wick kept getting swamped by the wax, which was only melting in the center and couldn’t escape easily or burn off quickly enough. To keep the flame burning towards the end, the candle was tipped to allow the wax to drip out. Here are some images:
February 16, 2011
February 14, 2011
In 1981, the Texas Historical Commission published a report entitled “Wax, Men, & Money: A Historical & Archeological Study of Candelilla Wax Camps along the Rio Grande Border of Texas” by Curtis Tunnell (graphics by Sharon Roos).
Tunnell led some extraordinary research into this wax industry, which has survived (in one form or another) since the Spanish missions. Lucky for us! Here are some notes on this excellent text:
Also known as the “weed” or “yerba,” the candelilla plant’s scientific name as assigned in 1829 is Euphorbia antisyphilitica. The plant is perennial and is found most naturally abundant in the areas shown in this map:
It grows well on well-drained limestone slopes, but does not tend to grow in bottomlands and clayey soils. Candelilla plants have small root systems that support numerous stems with a grayish green color. Although they can grow up to 2 m in diameter, a moderate size is 0.3-0.5 m in diameter with about 100 stems, ranging in length from 0.3-0.6 m and in diameter from 4 to 8 mm. Candelilla plants are very hardy and resistant to disease/pests; they flower during the spring and summer rains.
Best Conditions for Wax
The wax is a secretion of the plant skin to conserve moisture, and thus the wax is much heavier during the dry season and droughts. The average annual rainfall in its natural desert is 100 to 500 mm, so drought is common. Candelillas need from 2-5 years of growth before they produce significant wax. David Adams, one of the main refiners of candelilla wax in West Texas, was quoted saying that after the first harvesting, the candelilla return with some abundance in 2 years; after the second, 5 years; and after the third, possibly 10 years. Yet, the plant population had thus far sustained itself for 70 years of intense production. Candelilla plants regenerate from the root systems.
Attempts to Cultivate
Efforts in Haiti, Cuba, and the Dominican Republic have failed to cultivate candelilla for wax production. Likewise in Laredo, TX, and Presidio, TX, although the plants grew tremendously, they did not produce wax. Thus, if the Las Lomas community does wish to use candelilla wax, they may need to rely on the supply chain already in place. In this graphic, the dynamic of the sale and production of the wax is illustrated.
How to Get the Wax Out
The best way to harvest the plant known so far is simply to pull the “weed” by hand. Attempts to cut it do not work as well, and often kill the plant.
Once gathered, the wax is boiled out of the plants in a packed vat of acidic water. The crude wax (creote) is skimmed off the surface as it boils. Some of the instruments and the set up are diagrammed here:
Once the crude wax is cooled, it is sent to a refinery, where the dirt and other impurities are filtered out. Here is a diagram of one of these factories.