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Discussion Starter #1
Hi,
This seams like a very active forum so I hope you all can help me.

I have a router table and I'm currently using it to put roundover edges on square sheets of 1/4" plywood cut into 1'x1' squares. I'm currently using the 1/8" radius. It's small but it works fine. I'm not using any fence as the router bit has the bearing that rides along the upper edge of the plywood as a guide.

I now have a need to place a roundover edge on both the top and bottom edges. What is the best way to accomplish this???? The four corners of the plywood are also routed to a one-inch radius and I would like to have the round over edges go around the corners, too. Would a bit like this work? http://www.woodcraft.com/PRODUCT/20...ode=10INGOPB&gclid=CIbe_vfIjLcCFYOK4Aodw1gAdw

Obviously I would need a smaller radius (1/4"). I don't want to sand it as it won't be uniform and will take too long. (I'm doing a couple hundred of these for a church project.)

Thanks for any guidance.

Lars
 

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Time to use a fence.

If the fence was set to be at the same setting as the bearing of the router then you can rout both top and bottom easily.
 

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John
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Hi Lars - What Dave said.... time to set up the fence. The bit you pictured isn't the one you want either, you need a bullnose, aka half round. Here are some:
http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_bull.html

Number 5460 is what you are looking for.

The bit you pictured is for plunge cutting handholds and I doubt you would be able to find one small enough for your project....My CRS kicked in though and I can't recall the name of that bit. :huh:
 

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Discussion Starter #4
John and Dave,
Thanks for the quick reply. I really appreciate the guidance as I'm a relatively new woodworker. I'm a jack of "most" trades and a master of nothing. I have a good router but a very lame router table. I'll take a picture of my setup to let you both know what I'm dealing with. I'm trying to visualize how I might use the fence but my mind's eye is coming up short. I'm a 3 out of 10 when it comes to woodworking....meaning, I know enough to be very dangerous.

Pics to follow and thanks again!
Lars
 

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This is an example of a 1/8in rounder bit.

http://www.woodcraft.com/product/2001857/9491/woodriver-301011-round-over-router-bit-14sh-18r.aspx

I use router bits with bearings with my fence all the time.

I use a straight edge to align the fence with the front of the bearing surface. I am then using both the bearing and the fence.

In your example, routing 1/8in and then flipping the 1/4in plywood, for the second pass, the plywood will be using the fence in lieu of the bearing.

If you want to use a half round router bit then there will not be a bearing and you must use a fence.

http://www.woodcraft.com/product/20...alf-round-router-bit-14-shank-18-r-12-cl.aspx

A roundover bit is more useful since it can be used for thicker stock.

A half round bit, is really intended for a specific thickness of stock.
 

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Discussion Starter #6
Thanks guys!

I've done more research and I think I've finally realized the full potential of the fence and the various techniques in how to use it. I'm now able to get my 1' x 1' x 1/4" piece of plywood's four corners rounded and four edges with a bull-nose finish all with one bit and only moving the fence once. I've reduced the number of steps from 5 steps to just 2!!! (And with a better finished edge!!!)

Thanks guys for the help.

Lars Jensen:smile:
 
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