How do Daleks build anything?

I don't know of any canon support, but since the Daleks are capable of operating their suits it seems logical that they can operate other machinery as well. After all, when humans make cars they don't use their hands to bend the metal. read more

Much the same way any company gets anything done, labour. The Daleks will get contractors if necessary but slaves most likely. They will steal technology and incorporate it into their own. Daleks are a warrior race and as such devote a good portion of their efforts to resource gathering and building armaments. read more

In First Doctor serial 2x02, "The Dalek Invasion of Earth," the Daleks have enslaved the humans of Earth, sometime after 2164 AD, and using them to drill a big hole into the crust so they can blow it out of orbit and pilot it around. read more

Seriously, they have what looks like a whisk and a plunger. Not great tools for building empires. read more