DIY Dry Markers
Contributed by Natalie Jeremijenko:
Create a passive solar chimney to capture black carbon. This 3 to4 story high solar chimney can attached to the facades of schools.
Install an HVAC filter at the top.
The air heats inside the tube (which is open at the bottom), the air rises, and the filter collects black carbon.
Collect the carbon. Combine with resin
Use the mixture to make into pencils.
The pencil lengths vary by the amount of grime and soot found in the air at each site.
Earth Pastels and Chalk
Contributed by Natural Earth Paing: Eco-Friendly Paint Kits
This is a natural chalk/pastel recipe used by the Renaissance artists for drawings. Making your own pastels allows you to make your pastels as soft or as hard as you would like them to be. Commercial pastels have to be made hard enough to withstand breakage during shipment. Because you do not have to concern yourself with shipping, you can make softer pastels that are more yielding and do not dig into the under-layers as much as the harder pastels do. The paint quality will be richer, and the colors more intense.
Ingredients: earth pigment, water, wheat paste (optional) or white soap (optional- grated and dissolved in a small amount of water).
Prep Time: 5 – 45 min. depending on which binder you use.
1. Mix pure pigment with a small amount of water (with a palette knife) to create a thick paste-like material.
2. Roll it on an absorbent surface into stick form and let dry. If the dry pastel doesn’t hold together or is too crumbly you should add a tiny bit of binder such as wheat paste or dissolved soap or even a honey and water solution (1:6). Experiment because each pigment has different properties and acts differently. Note: start with one part binder to 5 parts pigment and adjust as needed.