That calculator is cool! I checked what a 6X12 would way: 8800lbs! I couldn't move it. Our forklift can lift 6000 and that is up close.
Regarding the rails in the pictures, Pictures really are worth a thousand words. Very clever way of fine adjusting. The photos were originally what drew me to cnczone. It is great to see other peoples ideas and perspectives.
I believe the "inflation fighter" sale extends to all of Dynatorch's products, they discounted the HP-1650 we purchased. Here is a link:
http://www.dynatorch.com/AllProducts.htm
Everyone have a Great weekend!