Drilling holes in cases.

[yuriy80]

What is the best/safest way to drill holes 3" in the 1mm sheet metal cases?

 

[The_Dark_Hacker]

hole saw. how else could you drill a 3 in hole

 

[yuriy80]

The ones you use to drill holes in wood?

That's what I bought and used to drill 2 holes, but it doesn't cut them as cleanly as I would like.

Technically, I should be using this

to cut holes in metal, but they don't have them in 3" width size, not to mention they are hella expensive! I could be wrong... The 3" holesaw is $90 bucks here http://www.relton.com/holesaw2003.html. Damn!

Just wondering what everyone else out there is using to cut holes 3" and larger.

 

[DMarti]

3" whole saw for 90.00 is a rip off go to Home Depot.

 

[The_Dark_Hacker]

it should not be more then $30 for the saw and $15 for the arbor. got to home depot to find prices like that

 

[DR_K13]

roto-zip that f-er

 

[Shimmerdark]

Yeah they don't make Step bits that will do up to 3" at least not at a price that is reasonable. You could have one custom made but we aren't talking reasonable. There are hole saws that are for cutting Ferris and Non-Ferris metals (Non-Ferris = Stuff without Iron basicly, Copper, Alum). The Wood ones will likely dull quickly and not give you a very clean cut.

 

[Qtip42]

http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=36222

 

[[wizard]]

draw the outline then dremel it out yo.