Right, getting there now with the Gaffi Stick.
The thinner front pole is a 35mm curtain rail cut to size.
I cut four grooves right near the top and stuck in the fins. For their shape i just went with what i thought looked right as they do vary from prop to prop and film to film.
Then i used Impact Adhesive along the join between them and the pole to get that distinctive welding look on the originals.
The point itself caused some head scratching - i didn't want it too sharp and dangerous and i wanted to keep it nice and light.
In the end i went with this wooden "Dibber" from the gardening section.
And i covered up the nuts and bolts i used to attach the pole - does seem that Tusken Raiders can weld fins but haven't mastered that aspect. So i've covered them with Green Stuff and hopefully they'll end up looking like real Medieval style rivets.
Second pic is that area primed in Black, based in Gunmetal, then a light dusting of Aluminium.
Next up, a very light weathering - seems from pics that the sand People keep their weapons clean (so to speak)