Screws help by keeping things in place. Only if you have a screwdriver...
hold object together steadly
Wood, lead, earier, metal.
This is always really a question of personal preference, but I think screws are the better way to go. Nails usually work themselves out after a while. The heat and the cold as well as the effect of the elements tend to make the nails work out. Screws take a little more work to install, but don' usually work their way out like nails will. Good luck. Without a doubt, screws. Make sure they are galvanized, stainless or coated.
one which is screws
Screws have a helix design, that drills into the wood, and also holds materials together.
Yes, make sure you wire it correctly. Some switches connect across the screws and some connect like a conventional switch where the screws are below one another.
Injection batch moulding
To make adjustments.
No. Most work by detecting the nails or screws.
If you have money try to get some one to do it for you but if you broke you have to try to losen up the screws and make sure that every thing work and if that does not work your scrwed.
Yes, and if you want it cheaper, buy it earier. Check with your parents because depending what their job is, they can get a discount.
you can make one out of chains, wood, and some metal, and screws