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Do-It-Yourself (DIY) Question & Answer Forum
Enlarging knockouts & drilled holes
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<blockquote data-quote="Larnacaman" data-source="post: 195891" data-attributes="member: 11825"><p>Most of the electrical contractors i've known on my projects have used cone cutters to open up smaller sized holes, they come in several different sizes and are both quick and easy to use in the majority of cases.... If going from 20mm to 32mm then the first stage would be to use the 20 to 25mm, the the 25 to 32mm. You can get them to go from 20 to 32mm, but can be a little on the inaccurate side, on the final aperture.</p></blockquote><p></p>
[QUOTE="Larnacaman, post: 195891, member: 11825"] Most of the electrical contractors i've known on my projects have used cone cutters to open up smaller sized holes, they come in several different sizes and are both quick and easy to use in the majority of cases.... If going from 20mm to 32mm then the first stage would be to use the 20 to 25mm, the the 25 to 32mm. You can get them to go from 20 to 32mm, but can be a little on the inaccurate side, on the final aperture. [/QUOTE]
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Enlarging knockouts & drilled holes
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