I am in the process of building a magnetic loop antenna. I have a roll of
1/2 inch
flexible copper tubing. I would like to increase the effective tubing size
by silver
soldering a second loop of equal size to the first loop -- point for point.
Would
it make any substantial difference if I just tacked the two together at a
number
of points, say every 45 degrees or so, or would it be better to solder them
together through the entire circumference?

The loop will be run HF QRP, with a maximum power of five watts,

Thanks in advance for any advice on this matter.

Irv VE6BP