0
votes
2answers
84 views

How do I drill through a shaped tube with a handheld drill?

I'm assembling a corrugated sheet metal fence and I have installed the posts and attached the pieces of shaped tube (rectangular cross section) horizontally and now I need to attach the metal sheets ...
5
votes
2answers
778 views

How do I drill into an existing galvanized fence post?

I have an existing metal fence post, set in concrete, in which I'd like to drill a new hole in that post. Normally, I would use a drill press to drill into a curved surface like this. Since the post ...
4
votes
1answer
1k views

What are the key differences between a step drill bit and a knockout punch?

Both a step drill bit and a knockout punch seem to be very similar, in that they both make holes in a metal box. The step drill seems to have an advantage, since it can make several size holes using ...
4
votes
2answers
3k views

How do I drill holes in Aluminum / Aluminium sheet?

I have some aluminum / aluminium strips that are about 3 mm thick and about 20 mm wide. I need to drill some holes in them. The holes will be 3.5 mm. What type of drill bit do I need? What speed ...