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Old 10 May 2013, 10:40   #1
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Accurately drilling holes in a thick transom

I've got to drill 4 to 6 10mm holes in the transom of the Ballistic to mount the auxiliary bracket. The transom is very thick-so much so that the 8hp aux won't fit on it without one.

Any tips on accurately drilling so I don't go askew on the way through? Bear in mind it's got to be done outdoors with a generator running the drill.
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Old 10 May 2013, 10:43   #2
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Quote:
Originally Posted by Nos4r2 View Post
I've got to drill 4 to 6 10mm holes in the transom of the Ballistic to mount the auxiliary bracket. The transom is very thick-so much so that the 8hp aux won't fit on it without one.

Any tips on accurately drilling so I don't go askew on the way through? Bear in mind it's got to be done outdoors with a generator running the drill.
bit of plate with a hole in & a tube welded to it, clamped onto the transom

Or a couple of engineers squares and mates with good eyes
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Old 10 May 2013, 10:53   #3
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Just drill the thing ya wuss.

PS, get a decent cordless, Fred Dibnah.
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Old 10 May 2013, 10:58   #4
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I agree with Mollers. Get ya missus to stand to one side whilst you drill. She can poke you hard if you start to wander off target.
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Old 10 May 2013, 11:07   #5
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Experience is handy for this task.

bedajim, as ever, over-engineers the solution (nothing wrong with that!). You could alternatively use a bench drill to drill out guide holes through a 9x2 offcut of timber (joist) as a quicker, easier & cheaper option.

Does it matter though, if the drill runs off a touch? Do you have a drilled plate on the inside that the bolts all need to go through?
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Old 10 May 2013, 11:49   #6
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Experience is handy for this task.

bedajim, as ever, over-engineers the solution (nothing wrong with that!). You could alternatively use a bench drill to drill out guide holes through a 9x2 offcut of timber (joist) as a quicker, easier & cheaper option.

Does it matter though, if the drill runs off a touch? Do you have a drilled plate on the inside that the bolts all need to go through?

No, but I was going to put a pad on the inside too afterwards.

I don't like the idea of bolts sticking out at odd angles. It looks wrong and untidy. It's quite easy drilling Searider transoms etc, they're nowhere near as thick.

the 9x2 sounds like a good solution. It's a shame no-one makes/hires out a suction version of a mag drill.
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Old 10 May 2013, 11:53   #7
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Nos..you have just started a hole drilling thread....please can you report yourself to yourself.... ;-)
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Old 10 May 2013, 11:55   #8
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Nos..you have just started a hole drilling thread....please can you report yourself to yourself.... ;-)


I think he has been out in the sun too long!
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Old 10 May 2013, 11:56   #9
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Nos..you have just started a hole drilling thread....please can you report yourself to yourself.... ;-)
I know...

It's not like it's 'how do I drill a hole in my console for an M6' though!
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Old 10 May 2013, 12:05   #10
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I think he has been out in the sun too long!
I think it's known as ballistic syndrome.....

How do you drill an M6 hole anyhow?

Sorry Nos....I've had an odd afternoon and couldn't help myself..
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