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How do I drill hole in Styrofoam

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Posted by gardenrandall (My Page) on
Wed, Jul 9, 08 at 4:02

What is the best way to drill a hole in 1.5" Styrofoam?

I dont know anything about drill bits really.

Would a holesaw or spade drill bit work best?

I need the holes to fit a 1.75" net pots for a float and grow system.

My drill has 3 metal pieces that you adjust with a key.

Thanks

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RE: How do I drill hole in Styrofoam

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you need a 1.1/2" hole saw available at any local hardware store. they typically come with an adapter so it'll fit into your drill.
If you're only doing a few holes, say less than 5, you could just as well cut them out with an exacto blade. You will need a template to draw the circle however.

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RE: How do I drill hole in Styrofoam

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You can get a type of hole saw that has several sizes in one saw. You remove the blades you aren't using. I found this to work better for the purpose of making a lettuce raft. Each blade is actually thinner than a single holesaw usually is. It cost me about $8, I think. I doubt it would hold up long using it for wood, but it worked great for foam insulation board. That's what my rafts are made of. I got my holesaw at menard's.

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RE: How do I drill hole in Styrofoam

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I used to make holes with an old tin can. See if you can find an old tin can with th right diameter and then just push the open end down on the styrofoam and twist the can around. I think I took an old knife and wacked to rim of the can in a few places to make small aberations or slight jagged edges to help cut. I have some pictures I took while makeing some holes for some cups to fit in. Anyway, take a look and see if it might work for you

Here is a link that might be useful: construction ideas

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RE: How do I drill hole in Styrofoam

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I recommend the sharp knife (exacto knife, etc). Anything with teeth or in the "drill family" is likely to tear at the styrofoam and make a big mess.

Cutting is much cleaner, both in the amount of mess it makes as well as the edges left behind.

  
 

 

 


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