yes they do
If by "redback spiders" you mean the kind of widow spiders that grow in Australia, they make the same kind of three-dimensional tangled filament webs that all the member of their Family make. Some other kinds of spiders make orb webs, sheet webs, etc.
When ever they want to . But some do not make webs
Spiders make unique webs because they do not want other spiders coming into their webs. They have a unique shape, design, and scent to keep other away.
yes.
NO
trapdoor spiders
orb spiders
No. They do not prefer any compass direction. Some spiders make webs that face up. Many spiders make webs near to porch lights because these lights attract insects. Where the web goes, and which direction it faces (if it is not a messy tangle web like that of the black widow spiders) generally depends on where the spider can find appropriate supports from which to hang its web.
spiders make webs
no, but SPIDERS spin WEBS.
Yes
Yes.Because why can it move and why can it make sider webs?