roundover bit - inch and a quarter radius

smallangryboy · 2nd April 2005, 05:23 PM

I'm looking at finding a large roundover bit to finish off the edges of my sub, either 1/4 or 1/2 shank with a cutting radius of an inch and a quarter.

Prices in the UK are ludicrous for tehse bits, and I wondered if anyone could suggest an alternate, say maybe in the US or any other country that may ship to the UK and order online ?

AndrewT · 2nd April 2005, 10:49 PM

Hi,
I used a plane and a surform followed by lots of sanding to round over my ash front panels to 30mm radius.
I couldn't afford the bit either!
Do you realise that the bit will have a diameter of about 70mm to 80mm and will take some driving?

audio-kraut · 2nd April 2005, 10:57 PM

check with www.leevalley.com - very reasonable prices and thats were i source my special tools from.

pinkmouse · 2nd April 2005, 11:01 PM

These bits may not seem that cheap, but if you look after them, they will probably last for the rest of your life!

Though Andrew's method will work, if you cost out the time it takes you, you will be saving by buying the right tool.

audio-kraut · 2nd April 2005, 11:27 PM

To make it really easy - and lee valley ships worldwide:

http://www.leevalley.com/wood/page.a...10&cat=1,46168

smallangryboy · 3rd April 2005, 10:10 AM

Superb, thanks for the help guys.

bear · 3rd April 2005, 11:29 PM

Given the radius, you might want to consider finding a professional shop, or a well equipped amateur shop (maybe a school too) with a shaper table? A better choice than a hand held tool for larger cuts like the one you want to make...

_-_-bear

markgall · 4th April 2005, 03:52 PM

Not 1-1/4" but here's a 1"
http://iseek.com/Projects/omnicat5/index.php?cat_id=0
Most of my bits are from Jesada and Freud. Very good quality and not too expensive. You may want to contact them and see if they have a 1-1/4 available.

BobEllis · 4th April 2005, 04:04 PM

you might be able to find something like these mdf quarter rounds to save yourself a lot of dust. (2" or greater radius) http://www.aitwood.com/catalog_l_quarter_rounds.htm

If you go for the 1.25" radius bit, use a >2 HP 1/2" shank variable speed router to minimize chatter. I've used my variac to slow down my fixed speed router. I bought a 1.25" radius bit from www.grizzly.com for around $40, it worked well, but the bearing didn't last long, so buy a few spare bearings if you go that route.

I agree with Bear - something this big is scary. I made a plywood fence/guide that pretty much turns my router into a router table without legs. I still keep the work between the bit and my body.

smallangryboy · 4th April 2005, 04:11 PM

I didn't think of that, it's a neat idea, thanks.

2nd April 2005, 05:23 PM	#1
smallangryboy diyAudio Member Join Date: Dec 2004 Location: Oxfordshire	roundover bit - inch and a quarter radius I'm looking at finding a large roundover bit to finish off the edges of my sub, either 1/4 or 1/2 shank with a cutting radius of an inch and a quarter. Prices in the UK are ludicrous for tehse bits, and I wondered if anyone could suggest an alternate, say maybe in the US or any other country that may ship to the UK and order online ?

2nd April 2005, 10:49 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, I used a plane and a surform followed by lots of sanding to round over my ash front panels to 30mm radius. I couldn't afford the bit either! Do you realise that the bit will have a diameter of about 70mm to 80mm and will take some driving? __________________ regards Andrew T.

2nd April 2005, 11:01 PM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	These bits may not seem that cheap, but if you look after them, they will probably last for the rest of your life! Though Andrew's method will work, if you cost out the time it takes you, you will be saving by buying the right tool. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

3rd April 2005, 11:29 PM	#7
bear diyAudio Member Join Date: Apr 2002 Location: New York State USA	Given the radius, you might want to consider finding a professional shop, or a well equipped amateur shop (maybe a school too) with a shaper table? A better choice than a hand held tool for larger cuts like the one you want to make... _-_-bear __________________ _-_-bear http://www.bearlabs.com ...live within ~60mi of Albany NY? contact me! --

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2nd April 2005, 10:57 PM	#3
audio-kraut diyAudio Member Join Date: Apr 2004 Location: 12km off the alaska highway in northern BC	check with www.leevalley.com - very reasonable prices and thats were i source my special tools from.

2nd April 2005, 11:27 PM	#5
audio-kraut diyAudio Member Join Date: Apr 2004 Location: 12km off the alaska highway in northern BC	To make it really easy - and lee valley ships worldwide: http://www.leevalley.com/wood/page.a...10&cat=1,46168

3rd April 2005, 10:10 AM	#6
smallangryboy diyAudio Member Join Date: Dec 2004 Location: Oxfordshire	Superb, thanks for the help guys.

4th April 2005, 03:52 PM	#8
markgall diyAudio Member Join Date: Jul 2004 Location: Illinois	Not 1-1/4" but here's a 1" http://iseek.com/Projects/omnicat5/index.php?cat_id=0 Most of my bits are from Jesada and Freud. Very good quality and not too expensive. You may want to contact them and see if they have a 1-1/4 available.

4th April 2005, 04:04 PM	#9
BobEllis diyAudio Member Join Date: Sep 2003 Location: Upstate NY	you might be able to find something like these mdf quarter rounds to save yourself a lot of dust. (2" or greater radius) http://www.aitwood.com/catalog_l_quarter_rounds.htm If you go for the 1.25" radius bit, use a >2 HP 1/2" shank variable speed router to minimize chatter. I've used my variac to slow down my fixed speed router. I bought a 1.25" radius bit from www.grizzly.com for around $40, it worked well, but the bearing didn't last long, so buy a few spare bearings if you go that route. I agree with Bear - something this big is scary. I made a plywood fence/guide that pretty much turns my router into a router table without legs. I still keep the work between the bit and my body.

4th April 2005, 04:11 PM	#10
smallangryboy diyAudio Member Join Date: Dec 2004 Location: Oxfordshire	I didn't think of that, it's a neat idea, thanks.

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