roundover bit - inch and a quarter radius

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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 ?
 
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?
 
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.
 
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.
 
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