5
votes
8answers
2k views

How can I drill a big diesel tank without emptying it first?

Need to make a hole in a big steel diesel tank. I would say it has 5000 liters capacity, and it should have at least 2/3 filled or more. Metal Sheet: At least 3 mm thick. Drill hole is 1" or 2", not ...
0
votes
2answers
91 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
895 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 ...