Cutting Hardie Board

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vinny186

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I need to cut a large circle from 2 pieces of Hardie board. Which cutting tool/s will give me the cleanest cut?
 

vinny186

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This is to take the place of a glass top that broke. The diameter will be 53" cut from 1/4" thick hardie.
 

vinny186

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Thanks for the info and the links. I had no idea hardie board could be smoothed out or polished.
 

vinny186

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Sparky, are you saying the edges can't be smoothed out?
 

vinny186

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I should have mentioned this table top will be painted then epoxied. Could have chosen plywood am trying to save my client $.
 

joecaption

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Unless this is going to be attached to 3/4 plywood, it's not going to work.
Hardie board has 0 top loading strength.
 

vinny186

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I see what you're saying but it will sit on a metal crossbar and I thought the epoxy would give it additional strength. Otoh, it might be less hassle and more peace of mind just going with plywood.
 

joecaption

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Just a really bad idea!
It would be cheaper and faster to just by a new table.
The only time I've seen this work out is when the guy cut out a piece of 4 X 8 X 3/4" PVC to fit.
It worked perfect, but looked like poop.
 
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