useful charts or calculators for working metals and other materials

**Frank S** · Sep 19, 2018, 11:05 PM

This post has little to nothing to do with tools or materials to make tools, but some may find the information contained in the following PDFs very useful should they decide to seek an alternative way to possibly reduce their long term energy costs.
In this post there are a few studies of using the Earth for passive heating and cooling.
Several years ago I was involved in the study of the possibility of cooling a large building constructed in the desert without the need for continuous consumption of energy. Even a modest thermal conversion of 10 to 15 °c could yield a huge savings in HAVC equipment sizing and cost plus amount of energy savings over the life of the building/s
below are some studies of the viability of doing this. as well as some installations done by others plus reports and engineering data
Earth%20tube%20and%20solar%20chimney%20ISEC2004-65093r.pdf

earth%20tubes.pdf

Earth%20Tubes2003-01-07GirjaSharan.pdf

Solar%20Chimney.pdf

**Frank S** · Sep 19, 2018, 11:21 PM

DRILL PRESS SPEED CHART
drillSpeedChart.pdf

**Frank S** · Sep 19, 2018, 11:31 PM

Do you suffer from excessive compulsive behavior. how about a general inability to sit and do nothing? Have you ever thought that you know a better way do do just about anything you have ever seen.
if so you may have The savant syndrome
Many people who have disabilities such as ADD and dyslexia are sometimes ousted socially for being different or simply prefer to have limited social contact with individuals or groups are usually savant in someways.
The savant syndrome_ an extraordinary condition.pdf