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When is an ovolo not an ovolo ?

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When is an ovolo not an ovolo ?

Postby RogerS » 03 Oct 2018, 08:47

Looking at some detail on Georgian doors, some have a stepped ovolo. So I started looking for spindle cutters to suit but soon came to the conclusion that the term 'ovolo' means different things to different companies. Even Wikipedia confuses things by stating that the ovolo is egg-shaped but that woodworkers call it a quarter-round!

This to my eye is a proper ovolo

Image

and here is what Wealden call an ovolo

Image

which to my mind, since it refers to a radius, is just plain wrong. It's a quarter-round bead!

Also came across this craftsman who is showing you how to make a proper ovolo by hand.

[youtube]KBFZ6HXckZ0[/youtube]
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Re: When is an ovolo not an ovolo ?

Postby 9fingers » 03 Oct 2018, 09:57

When it comes to router cutters and spindle knives I tend to go for the diagram rather than a name.

In the case of your wealden illustration, isn't simple a matter of the bearing size realtive to the bottom of the left hand cutter that either gives the profile in your upper picture or a 1/4 round?

Bob
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Re: When is an ovolo not an ovolo ?

Postby RogerS » 03 Oct 2018, 11:45

9fingers wrote:When it comes to router cutters and spindle knives I tend to go for the diagram rather than a name.

In the case of your wealden illustration, isn't simple a matter of the bearing size realtive to the bottom of the left hand cutter that either gives the profile in your upper picture or a 1/4 round?

Bob


No, I don't think so. The cutter has a reference A ..radius which implies a circle.
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Re: When is an ovolo not an ovolo ?

Postby 9fingers » 03 Oct 2018, 15:02

Your first picture looks like a 1/4 circle plus a step not egg or oblate spheroid shaped plus step.

Seems a non-debate? :lol:

Bob
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Re: When is an ovolo not an ovolo ?

Postby RogerS » 03 Oct 2018, 15:13

9fingers wrote:Your first picture looks like a 1/4 circle plus a step not egg or oblate spheroid shaped plus step.

Seems a non-debate? :lol:

Bob


Trust me...it's a duff photo !
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