Cut Perforated Steel

[unionworkeruk]

I am fixing a sheet of perforated steel to a wall. I have to cut around two steel stringers on three sides (approx 6" or 15mm each of the three sides). I can saw the two sides straight through from the open top but how do I cut the third at the bottom as it impossible to get a saw it there ? Can I bend/hammer it backwards and forwards and hopefully break it or what ?

 

[Burnerman]

Can you chain drill a row of small holes, and finish with a file?
If the slot is only 15mm deep, maybe you could get in with a 6mm grinding disc?
I'd doubt if fatigue would give a nice finish, but of course that depends on whether a good finish is necessary.
John

 

[foxhole]

I am fixing a sheet of perforated steel to a wall. I have to cut around two steel stringers on three sides (approx 6" or 15mm each of the three sides). I can saw the two sides straight through from the open top but how do I cut the third at the bottom as it impossible to get a saw it there ? Can I bend/hammer it backwards and forwards and hopefully break it or what ?

Get a saw in where exactly ? You are not cutting the sheet in the ground ?

 

[unionworkeruk]

Its like cutting around a square beam in a ceiling The two sides are easy as you can cut down from the open top pf the sheet but the cross cut 15mm down into the sheet is difficult as you cannot get a saw in to start the cut. It is perforated steel so the cut would be through a series of small holes which are already there. If it were wood I would use a floorboard saw and cut from the centre outwards to the edge on both sides. A laser cutter would be ideal but far to expensive for a single cut. The problem is starting a cut in the middle of the sheet.

 

[foxhole]

Its like cutting around a square beam in a ceiling The two sides are easy as you can cut down from the open top pf the sheet but the cross cut 15mm down into the sheet is difficult as you cannot get a saw in to start the cut. It is perforated steel so the cut would be through a series of small holes which are already there. If it were wood I would use a floorboard saw and cut from the centre outwards to the edge on both sides. A laser cutter would be ideal but far to expensive for a single cut. The problem is starting a cut in the middle of the sheet.

Angle grinder .

 

[Tigercubrider]

Angle grinder or small plunge saw with a metal blade.
Worst case a jig saw , metal blade, and a guide clamped on

(I'd use a guide on the plunge/angle grinder as well