Contact info Inc.

UK address:  5 Dee Rd, Talacre, CH8 9RS, UK.     e-mail:

Phone:  +44 1745 855 181

Copyright © Inc.  1987-2015

These are the SDT (carpentry) jointing techniques used by the World’s experts:

Go to State-of-the-art of SDT utilization on this site to see what is wrong with these methods:

1.  A European-funded consortium from: Austria, Finland, France, the Netherlands and UK.  Their final report (1999) is available at:

2.  The Forest Products Laboratory, USA.  See:

3.  TRADA, UK (Timber Research and Development Association):$FILE/crwoodproducts27.pdf