[Amps] Winding large inductors

[Steve Thompson]

Dan Hearn wrote:
> 
> 
> Dennis, I have heard of people filling the tubing with sand to prevent it
> from kinking. I would think you could push or pull on the end of the
> inductor to adjust turn spacing. How about using small nylon cord wound with
> the tubing to approximate the spacing you want?
I've used sand very successfully to avoid pipe kinking when 
bending - although not for inductor winding. With larger coils and 
heavy wire I anchor the far end and wind the free end onto a 
former, walking towards the anchor. This lets you use body weight 
to keep tension on the wire. I don't suppose you'll get much 
tension into quarter inch tube, but maybe better than nothing - 
assuming the tube is soft enough to wind that way.

Steve