Best Method - Cutting Holes In Plaster Ceiling For Can Lights... - Drywall - Contractor Talk

Best Method - Cutting Holes In Plaster Ceiling For Can Lights...

 
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Old 04-09-2014, 07:24 PM   #1
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Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


What tool works best for cutting out circle holes in plaster ceiling for can lights?
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Old 04-09-2014, 07:39 PM   #2
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Carbide grit holesaw, it will last you a lifetime. If I have a lot to cut I will burn through the plaster with the carbide grit, then cut through the wood lath with a regular hole saw.

Or buy a case of regular hole saws because lime plaster will murder them.

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Old 04-09-2014, 07:41 PM   #3
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Abrasive grit hole saw
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Old 04-09-2014, 07:41 PM   #4
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


What they said.
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Old 04-09-2014, 07:44 PM   #5
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Plaster drywall or plaster over old lathe? The old lathe system hates vibrations, so you might want to use a spiral cutter after making a pilot hole. You can pretty much write off the bit afterwards. If it is on a newer drywall type substrate, you can use whatever you like if you do it neatly.

A hole saw would be fine for a newer system, but could possibly create a problem on old plaster lathe ceilings because you never really know how loose the plaster is to the lathe.

Last edited by D.E.P.S.; 04-09-2014 at 07:48 PM.
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Old 04-09-2014, 07:45 PM   #6
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


I should also add that the cheap one don't appear to be much different than the expensive ones. Mine's a Greenlee but I picked up a MasterCraft set for 20 bucks and it works fine.
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Old 04-09-2014, 07:50 PM   #7
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Drill a small hole in the center of where you think you want the light and use a wire thru the hole to check for pipes/joists. Easier to patch small hole than 6" hole.
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Old 04-09-2014, 07:52 PM   #8
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Never tried a roto zip or multi master but they might be distant runners up with an abrasive grit bit.

The reason the hole saw works the best is these other tools get hung up on the lathe and crack the plaster and then your are going to be late for dinner patching that mess.

Jig saw with abrasive blade would be fun to watch. It sounds like a total nightmare. LOL.

If you go with the hole saw with abrasive grit It might be worth switching from an abrasive grit saw to a wood hole saw that is the same size once you are thru the plaster down to the lathe.

Agree with RRK above that you want to be sure there are no obstructions where you want to insert the recessed fixture canister. Often there is framing, wiring or pipes in the way where you want to install it.

Last edited by PoleBarnsNY; 04-09-2014 at 07:57 PM.
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Old 04-09-2014, 08:01 PM   #9
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Morse Recessed Lighting Hole Saw (Tungsten carbide grit)

http://www.mkmorse.com/products/index.aspx?product=21
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Old 04-10-2014, 06:00 AM   #10
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Thanks for all the advice. Got the answers I was looking for. Sounds like I need to invest in a carbide grit hole saw for cans...
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Old 04-10-2014, 06:20 AM   #11
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


I have an acquaintance who owns an electrical company and buys Dewalt hole saws by the case and throws them out as they get dull.
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Old 04-10-2014, 08:31 AM   #12
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


http://www.tlc-direct.co.uk/Products/FXDADE.html

http://www.holepro.com/electrical.html

Seen an electrician use these, pretty slick set up.
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Old 04-10-2014, 11:14 AM   #13
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Quote:
Originally Posted by Stoneyard View Post
The adjustable hole cutter is as useful as tits on a bull for plaster.
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Old 04-10-2014, 12:48 PM   #14
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Try a different bit, its not brain surgery...
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Old 04-10-2014, 12:50 PM   #15
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Quote:
Originally Posted by Stoneyard View Post
Try a different bit, its not brain surgery...
The adjustable hole cutters.
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Old 04-10-2014, 12:57 PM   #16
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Quote:
Originally Posted by Sir Mixalot View Post
Morse Recessed Lighting Hole Saw (Tungsten carbide grit)

http://www.mkmorse.com/products/index.aspx?product=21
Just picked up one and it works awesome!
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Old 04-10-2014, 12:57 PM   #17
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Gotcha...
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Old 04-13-2014, 05:29 PM   #18
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Assuming it's a existing plaster cieling, what about the rest of the housing?
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Old 04-13-2014, 05:34 PM   #19
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


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Assuming it's a existing plaster cieling, what about the rest of the housing?
??????
You do know about remodeling cans right?
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Old 04-13-2014, 05:37 PM   #20
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Re: Best Method - Cutting Holes In Plaster Ceiling For Can Lights...


Quote:
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??????
You do know about remodeling cans right?
Never had a job to retro fit them.

Come to think of it never seen one.... never really looked for 'em either tho.

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