Hello I have a strong need to drill a hole in the cast iron, some fi8. This is the door to the CO furnace, I need to screw the insulation. The door thickness is about 4-5 mm (I have no way to measure it more precisely). Question: will it break, not break? I have no experience with cast iron, I...

Drill slowly, it will not break.

Why would it break - on the contrary, any holes prevent the material from breaking in which some stresses arise. You can drill slowly and you can drill quickly.

Thanks for the answers. I work tomorrow or the day after

Drill normally, as in any other iron - it's not glass. Sharp drill bit required.

And what do you recommend unsharp drills for?

tomo1885 do you have any other equally wise questions?

Drilling an 8mm Hole in Cast Iron Furnace Door: Methods & Precautions (Thickness approx. 4-5mm)

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#1 11677479 20 Dec 2012 18:02

Big Lebowski Big Lebowski

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Post #1
11677479 20 Dec 2012 18:02

Hello

I have a strong need to drill a hole in the cast iron, some fi8. This is the door to the CO furnace, I need to screw the insulation. The door thickness is about 4-5 mm (I have no way to measure it more precisely).

Question: will it break, not break? I have no experience with cast iron, I only know that it is quite brittle. Only for how much?
Regards, Paweł
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#2 11677492 20 Dec 2012 18:07

pawel16150 pawel16150

Level 30

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Post #2
11677492 20 Dec 2012 18:07

Drill slowly, it will not break.
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#3 11677497 20 Dec 2012 18:08

kwantor kwantor

Level 38

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Post #3
11677497 20 Dec 2012 18:08

Why would it break - on the contrary, any holes prevent the material from breaking in which some stresses arise.
You can drill slowly and you can drill quickly.
#4 11677525 20 Dec 2012 18:15

Big Lebowski Big Lebowski

Level 10

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Post #4
11677525 20 Dec 2012 18:15

Thanks for the answers. I work tomorrow or the day after
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#5 11678412 20 Dec 2012 21:17

robokop robokop

VIP Meritorious for electroda.pl

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Post #5
11678412 20 Dec 2012 21:17

Drill normally, as in any other iron - it's not glass. Sharp drill bit required.
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#6 11680804 21 Dec 2012 15:11

Anonymous Anonymous

Anonymous

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Post #6
11680804 21 Dec 2012 15:11

robokop wrote:
Sharp drill bit required.
And what do you recommend unsharp drills for?
#7 11681114 21 Dec 2012 16:33

robokop robokop

VIP Meritorious for electroda.pl

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Post #7
11681114 21 Dec 2012 16:33

tomo1885 do you have any other equally "wise" questions?
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Topic summary

Drilling an 8mm hole in a cast iron furnace door, approximately 4-5mm thick, is feasible without breaking the material. Users recommend drilling slowly and using a sharp drill bit, as cast iron is not as brittle as glass. The consensus is that drilling will not cause the door to break, and any holes may actually relieve stress in the material. Proper technique is emphasized, with a focus on using appropriate tools for the task.
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Drilling an 8mm Hole in Cast Iron Furnace Door: Methods & Precautions (Thickness approx. 4-5mm)

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