You got a link to these?Arbors are available for this very purpose, which use a holesaw for original size as a pilot.
They're great provided the hole needs to be enlarged by more that a few mms.
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You got a link to these?Arbors are available for this very purpose, which use a holesaw for original size as a pilot.
They're great provided the hole needs to be enlarged by more that a few mms.
You can often do this with a standard arbor. Just enough thread for a second holesaw inside the first.Arbors are available for this very purpose, which use a holesaw for original size as a pilot.
They're great provided the hole needs to be enlarged by more that a few mms.
You got a link to these?
I'd not fret about it. and it should be a 13A fuse."Can you come and have a look at my fret saw? Every time i switch it on, the breaker trips. I've tried changing the fuse in the plug, but it still trips."
Oh, that's odd...
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Sorry don’t understand your question. I was just suggesting cutting an access hole into the plasterboard.It's difficult to get a nice cut using a hole saw without using the pilot bit, unless you pre-cut a piece of ply to get a decent start the multi tool back box cutter is far easier imo.
Cut a hole in a piece of plywood, throw away the circular piece you cut out, then hold the plywood against the ceiling, and use the hole as a guide for the hole saw.Sorry don’t understand your question. I was just suggesting cutting an access hole into the plasterboard.
Now i'm confused. I've never seen an arbour that will let you attach two hole saws at the same time?Many ways to do this two as suggested by BrianMoooore above, used both methods, never needed a special arbor to do it, most standard arbours will take two hole saws.
Some do, some don’t. Just depends on the length of the threaded part.Now i'm confused. I've never seen an arbour that will let you attach two hole saws at the same time?
Now i'm confused. I've never seen an arbour that will let you attach two hole saws at the same time?
As per post #5904, Starret make something specifically for this, it's called an Oops Arbour. CK also do one. It replaces the pilot bit and means you enlarge a hole by using the original size holesaw as the pilot. Best use I've found for it is changing from the old spring downlights which are 64mm hole to the more modern versions which are anything from 70mm hole and up.Some do, some don’t. Just depends on the length of the threaded part.
For someone who's crapping themselves having drilled the wrong side holes..?As per post #5904, Starret make something specifically for this, it's called an Oops Arbour.
Many ways to do this two as suggested by BrianMoooore above, used both methods, never needed a special arbor to do it, most standard arbours will take two hole saws.
I can't see how you can easily start a hole in the centre of a joist, as the inner hole saw protrudes too much. ?Starrett A19 Arbor for A1/A2/A10 : Amazon.co.uk: DIY & Tools
Starrett A19 Arbor for A1/A2/A10 : Amazon.co.uk: DIY & Toolswww.amazon.co.uk
I can't see how you can easily start a hole in the centre of a joist, as the inner hole saw protrudes too much. ?
In my limited experiance the problem are holes that are too big (e.g. old R80 lamp holders) so you can fit smaller LED downlights without getting extra covers, and even those sometimes won't hid the damage of getting the original out if crusted in paint, etc.Their real value is enlarging holes in plasterboard for upgraded downlighter's and that is what everyone else is posting about.
These are a good option for up to 100mm:In my limited experiance the problem are holes that are too big (e.g. old R80 lamp holders) so you can fit smaller LED downlights without getting extra covers, and even those sometimes won't hid the damage of getting the original out if crusted in paint, etc.
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