round over router bit

[user 19915]

Advice please i am trying to round over my bandsaw box with a round over bit and it always leaves a lip i have tried and tried to over come this on practice pieces from the router bit bearing just touching the wood and adjusting a tiny tiny bit higher every time but it still leaves a lip any explanation on what i am doing wrong would be most appreciated
thank's in advance
ALAN

 

[custard]

The tolerances are always really tight with a round over bit, the slightest unevenness on the surface across which the router runs, the tiniest bit of lift or tip when you move the router, and you get the lip you describe.

Wealden recently developed an excellent round over bit that takes all the drama out of the process. It's called the arris bit and it works a treat!

https://www.wealdentool.com/acatalog/On ... g_964.html

 

[petermillard]

Hadn't seen those before Custard, thanks for posting!

 

[user 19915]

custard would i need to use a round over bit and then the one in your link to finish off ? or just the one in the link ??
Alan

 

[custard]

custard would i need to use a round over bit and then the one in your link to finish off ? or just the one in the link ??
Alan

Just the one.

 

[Ttrees]

Are these the same type profile as the Corbox bits Cosman uses like in his latest video with the jewellery cabinet?

 

[sunnybob]

Mock, I have had the same problem in the past.
I got over it by putting the bare minimum of pressure against the bit. Just enough to stop it chattering.
Then is there was any lip at all, a very quick sanding of that edge removed all traces of it.
Ane remember a bandsaw box is essentially a free hand work, you dont need engineering tolerances on it.

 

[geoffshep]

Mock - where is the lip - is it on the side or on the top of the workpiece?

 

[user 19915]

geoffshep if i remember correctly it's on the face down
Alan

 

[woodenstx]

What make/model is the roundover bit?

I had some no brand bits (plus some inexperience) that caused what you desribed, I then got some trend bits and the same ineperience but hardly get a lip anymore.

 

[user 19915]

The lip is on the top and i think the bit is trend but can's swear on it
ALAN

 

[Gerry]

When I have had this issue I just run a couple of strips of masking tape down the edge for the bearing to ride on.

Gerry

 

[sunnybob]

The lip should not be on the edge closest to the bearing, as that would be a manufacturing defect.
Check the bearing diameter against the cutter diameter.
If the lip is on the bottom of the cutter then a half mm lower should solve the problem.

 

[rafezetter]

The tolerances are always really tight with a round over bit, the slightest unevenness on the surface across which the router runs, the tiniest bit of lift or tip when you move the router, and you get the lip you describe.

Wealden recently developed an excellent round over bit that takes all the drama out of the process. It's called the arris bit and it works a treat!

https://www.wealdentool.com/acatalog/On ... g_964.html

ooh very nice TY.

 

[chippy1970]

Hadn't seen those before Custard, thanks for posting!

I've had one a while now Peter ,great little cutter. Just for knocking the edge off stuff

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