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cool cheers
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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. |
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!
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i never even thought of going there at all.
Sent from my HTC Desire HD A9191 |
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