Continued...

9. When using CREW tubing always place the weld seam to the inside of the bend. The weld is least likely to split when placed on the inside of the bend.

10. If you are going to butt weld two tubes together and it is not at the intersection of multiple tubes (miter joint), the tube needs to be sleeved, plug welded to each tube a couple of inches from the butt weld and then finally welded with penetration into the sleeve at the butt joint. See an aircraft tubing repair guide manual if you do not believe this. Butt welded joints are very weak, the weld is strong but the tubing next to the weld is weakened from the welding process, especially if it is 4130.

11. Always make a complete weld on any joint. Never leave a joint with an un-welded portion. The end of the weld acts as a stress riser and will cause the joint to fail in the event it gets loaded high enough from a roll over, bottom out, whatever.

By: jemorgan111