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-   -   Which cutting fluid? (http://forums.sv650.org/showthread.php?t=189183)

SVJC 12-01-13 01:52 PM

cool cheers

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embee 12-01-13 02:49 PM

Re: Cutting fluid
 
Unless you're doing serious machining you can "get away with" using fluids other than specific drilling/cutting/tapping oils. Yes they are intended for the job, but not absolutely essential. I have some CT90 which works fine on most general purpose stuff I do, like this except it's a bottle not aerosol.

For mild steels you can use a thin mineral oil, like 3-in-1 or similar, aluminium likes paraffin or one of the few good uses of WD40, brass and cast iron you usually do dry. It's used to stop the tool overheating and prevent welding/pick-up on the cutting edge (I remember drilling a block of lead once without oil, ended up with a large lump welded on the end of the drill bit).

If a drill isn't cutting well it's because it is blunt, as the others say. It's worth digging out a table of cutting speeds for different materials/diameters/drill bit spec, something like here just as an example, plenty of others available if you search. Gives an idea of what sort of speeds are suitable.

phi-dan 12-01-13 02:58 PM

You could try Macsalvor's in Pool, if you still need the proper stuff. They tend to have most things you never thought you'd need but just have to buy!

SVJC 12-01-13 03:05 PM

i never even thought of going there at all.

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