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Perfect circles [message #29329]

Wed, 22 December 2004 06:00

Fred
Messages: 5
Registered: May 2009

Esquire

I built some speakers a while back, luckily the design called for the drivers to be mounted resting on the cabinet so you couldn't see the not quite perfect cutout for the driver.

My next project is an open baffle speaker, this needs a perfectly round and smooth hole with the normal rabett to let the drive unit be flush with the baffle.

I'll be using MDF, I have a router and jig saw. What's the best approach, is it likely that if I'm very slow and careful I can get a perfect hole with the jigsaw? Should a router be ok to cut the rabett on a circular hole?

I've no idea what is normal practise for doing this.

Thanks for advice.

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Re: Perfect circles [message #29330 is a reply to message #29329]

Wed, 22 December 2004 06:09

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

You might consider a hole cutter tool or jig. There are some suggestions in the thread below:

Cutting a circle

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Like falling off a log... [message #29331 is a reply to message #29329]

Wed, 22 December 2004 22:44

wunhuanglo
Messages: 912
Registered: May 2009

Illuminati (2nd Degree)

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=365-250

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=365-250

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Thanks, just what I was looking for [message #29332 is a reply to message #29329]

Thu, 23 December 2004 07:02

Fred
Messages: 5
Registered: May 2009

Esquire

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Re: Perfect circles [message #29333 is a reply to message #29330]

Tue, 28 December 2004 14:00

lon
Messages: 760
Registered: May 2009

Illuminati (2nd Degree)

Wayne, the place to get this went out of stock or something.
Who is the manufacturer of that circle gizmo?

And where to get it.

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Re: Perfect circles [message #29335 is a reply to message #29333]

Tue, 28 December 2004 14:40

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

Bummer. I wonder if they'll get new stock, or if it's better to find another source. I know there are hole cutters like that locally at Sutherlands and Lowes, but beyond that, I don't know. Maybe one of the resident woodworking gurus wil chime in on this one.

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