35mm hole

[HERTS P&D]

Not sure what section this should have gone into.
Anyway what is the best way to drill a 35mm hole through a van floor to fit an exhaust from a drain jetter.

Andy

 

[Diyisfun]

With a hole saw..
http://www.google.co.uk/search?q=HO...7ADRA_en&redir_esc=&ei=y5dqTZ6RIdSKhQeKpcTyDg

 

[HERTS P&D]

I didn't think hole saws could do metal, but they must do?

Andy

 

[JohnD]

even a hole saw designed for wood can probably cut a hole in a van floor (thinner than a baked-bean can) though it might get too blunt to do it twice.

 

[LooPrEvil]

The Bosch one's shown in the link will cut steel (it is confirmed in the description), but you will have to be careful as they 'snatch' like anything when breaking through the metal. Put your drill on the lowest speed possible and only apply slight pressure, otherwise the tool will snatch and the drill will try and spin you instead!

Alternatively, to save the buying the tool for a one off, mark the diameter you wish to cut on the floor of the van, and then 'chain drill' a sequence of holes (approx 4 to 5mm diameter) around the inside edge of the marking you made. This will leave a hole with a jagged edge that will soon clean up with a half round file. Chain drilling is just drilling a sequence of holes that virually break into each other.

WHATEVER WAY YOU DO IT: DONT FORGET TO CHECK FOR BRAKE PIPES OR OTHER OBSTRUCTIONS UNDERNEATH THE VAN!!

 

[merlin50]

 

[JohnD]

The Bosch one's shown in the link will cut steel (it is confirmed in the description), but you will have to be careful as they 'snatch' like anything when breaking through the metal. Put your drill on the lowest speed possible and only apply slight pressure, otherwise the tool will snatch and the drill will try and spin you instead!

good point, or, if your drill has it, you could set the "screwdriver" torque very low so the clutch disengages

 

[merlin50]

if its just one hole drill and file it, open it up with a round file ans finish off with a half round, done it hundreds of times.

 

[foxhole]

http://www.ikea.com/gb/en/catalog/products/28512100# with free pipe cutter.

 

[Master of None]

http://www.ikea.com/gb/en/catalog/products/28512100# with free pipe cutter.

I used one of these for my sink. Excelent idea I think it would work

 

[Nige F]

is that Merlin`s magic wand A Starret holesaw will cut through a galvanised water tank

 

[LankyPaddy]

+100 man points if you use one of these:

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