Cutting a thread deeper in metal.

screws

I am trying to put together a TV Stand with 3 legs- 2 of which are supported via 18 inch metal rods within plastic tubes, screwed into the base. The depth of the hole in one of these is too shallow so the rod is easily loosened- rendering it useless. How can I increase the depth of the threads in this (aluminium) hole; or increase the rigidity of the rod?

Best Answer

If the hole is there but not threaded you can cut the thread deeper with a tap. You need to be sure of the size, which is easier to measure on the external thread of the mating part. Often the hole is also too loose though.