home heating oil tank..how thick steel?

[steveo3002]

i need to make a 32mm hole in a steel heating oil tank, are they very thick ?

ive got some diy store hole cutters but wondering if i need to step up to something good quality

 

[Paul.]

The ones I've cut, and made have been 3mm at most some only 2mm, should cut easily enough with an ordinary holesaw as long as its designed for metal cutting, dont run it too fast, use a cordless drill they run a bit slower, and a bit of oil as a lubricant will make life easier.

 

[steveo3002]

is there a way to tell by the look of a saw if its meant for steel ? mine have fairly coarse teeth

 

[Paul.]

Give it a try, worst that can happen is you'll take the teeth off and have to buy a decent one, I think most are now suitable for cutting steel.

 

[steveo3002]

yeah will give it a try ...worst case i can drill holes around the edge and knock it out

do the metal tanks tend to have any internal braces ? ive been volunteered to fit one of these oil level sensor things

thanks

 

[rtbcomp]

Mine had braces from side to side about half way up, central to the sides