Cut 1 1/4" Hole for DC Receptacle - Fiberglass RV


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Old 05-27-2014, 11:59 AM   #1
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Name: Huck
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Cut 1 1/4" Hole for DC Receptacle

I've never cut or drilled fiberglass before. I need to cut a 1 1/4" hole in the bottom of a cabinet so I can install a 12v receptacle.

Can I use a hole saw for wood? Should I tape the fiberglass? Drill from inside cabinet or from below cabinet?

Any thing else I need to know?

Thanks
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Old 05-27-2014, 12:05 PM   #2
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You are correct on all counts. Hole saw with a pilot drill in the middle and if the fiberglass is visible, put masking tape over it so it does not chip. You may want to wear a breathing mask to keep the glass out of your lungs.
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Old 05-27-2014, 12:06 PM   #3
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I just used a Drill hole saw attachment when I had to put a hole into the bottom of my cabinet. I taped it before doing.
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Old 05-27-2014, 12:06 PM   #4
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I just drilled through the side for the shore cord with a 3" bi-metal hole saw from lowes. If you can start drilling from in the cabinet to 'get the groove started'
Then drill from the bottom up.. this helps to reduce tear out when you break through. Also pushing easy. And wear gloves and long sleeves... Just drilling one hole got the fiberglass dust on my arms and took scrubbing with a pot scrubber to stop the itching
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Old 05-27-2014, 12:16 PM   #5
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Thanks. Off to buy a new hole saw.
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Old 05-27-2014, 12:50 PM   #6
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Use a shop vac to suck up the dust as you cut saves a big ichy mess.
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Old 05-27-2014, 12:54 PM   #7
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Run the hole saw in reverse. Less chance of the bit grabbing and doing damage
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