Ehud, You should be able to find a local blacksmith who could make a
sine stake for you. You would benefit from making a full scale
drawing of what you want and taking it with you to the blacksmith.
Details such as radius of the sine, is if flat or round, what
thickness of material to be used, and the size of the mounting foot.
If you know someone who has a "shop" with metalworker's type torch,
vise, etc, you could probably make one with a little help from your
friends. Use an old car/truck leaf spring, heat it, make two bends
- back to back - around an appropriate sized pipe, weld on a foot
for mounting it , and temper it. That would definitely be a fun
It sure sounds like a specialized stake. What type of
vessel/project are you planning on raising?
o"dehabro molesto, adproxima felix!" - Bobby McFerren