Quote:
Originally posted by trekkor
They make a really cool hole saw with a larger clear plastic cover.
You let the hole saw pilot bit make contact with the work and then push the spring-loaded cover make contact with the cieling/wall surface.
Because it is clear plastic you can see what you are doing while all the dust and debris is contained. Pretty cool...
with the sawzall, use the plaster blade. No big deal. Use high speed and light pressure. Don't go "agro".
"Secret Tip": tape the shop vac crevice tip to the sawzall so it draws the dust right off the blade. ;)
KT
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I've seen this done with a plastic bucket, too. You don't need to see where you're going once the pilot bit starts. You really don't even need to cover furniture unless insulation is going to fall down through the hole. It's a good idea to drill some very small exploratory holes and insert a bent coat hanger to rotate above the ceiling. You don't want to find you're drilling under a joist. Next to a joist is really good for strength to hold the weight of the fan. Or use a fan rated bracket. A 2 x 4 backer above the box works well, too.
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