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circular molding ideas needed

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circular molding ideas needed

#1

circular molding ideas needed

Paul M. in San Diego

>My bench has been lately covered with the tools and materials from my latest infatuation... stained glass. But now that I've just about completed the glass portion of the current project, I need to move on to the installation which requires molding.

I have a 28" diameter port-hole type of window. This is inset into the wall, so that when looking at the window from the inside of the house there is about a 4" deep hole in the wall before the exterior window. I am not replacing the exterior window, but just installing the stained glass inside that window.

I created the stained glass panel to be slightly smaller than the diameter of the inset opening, and I plan to shim the panel until it gets a good tight fit in the opening. I then want to make a circular molding to cover the resulting gaps and shims from the installation.

I will need at least 3/4" of molding all around, and this is a pretty tight circle to turn with that width of molding. I've done bentwood laminations, but I've never done a full circle of molding before. I also prefer to use hand tools whenever possible, but I'm not against using a screaming monster if there is absolutely no way to do this by hand.

I would love to hear how the good folks on this site would go about making a decorative circular inset molding using hand tools. I'm thinking I would need to rough this out from the bent form with a compass plane, and then move to scrapers for the decorative molding. I'm also thinking that I would need to do this in 2 half-circles, as a full circle would not leave much room for error during installation.

Any ideas are welcome!

-- Paul M.

Re: circular molding ideas needed

#2

Jack Guzman from Maine

Re: circular molding ideas needed

Jack Guzman from Maine

>My thoughts are to use a scratch stock.Keep it simple and make the molding from separate curved pieces butted together.I think this job would be a lot more difficult using power tools.I'm currently building clock cases and I'm running into alot of interesting problems.---Jack

Re: circular molding ideas needed

#3

Re: circular molding ideas needed

Warren in Lancaster, PA

>I think I would make a segmented molding: at least eight arcs or maybe more. If you try to use only two or four pieces there will be much more trouble fitting it to your opening, which may not be perfect. Also long arcs will have more end grain which will be difficult to work with no matter what method you use. Short segments have flatter grain. You could put a small decorative block or "keystone" at every joint of the arcs.

I would mark the arcs with a pattern, saw and then smooth with a spokeshave to the lines. If the wood is hard enough, you could use a scratch stock for the molding (does not work well for pine or poplar). I find it easier to mark the edges of the molding with a marking gauge to delineate the molding and carve with gouges.

Re: circular molding ideas needed

#4

Re: circular molding ideas needed

Marv

>Hi Paul,

What an interesting challenge.

I guess you aren't really concerned what it looks like behind your stained glass because you can't see it from outside? With that in mind, I would make about six or eight spacer blocks to center it in the round opening. Make the blocks so the window is secured to these spacer blocks. Now all you need is a facia molding made of four pieces, or six, all from the same area of the board you cut it from so all the grain is basically the same. Attach these sections to the spacer blocks with maybe dowels that extend out the backside. This is not something that you would be removing so it can be built in permanently. The facia is not a structural part of the thing because the spacer blocks are answering that concern. Perhaps you'll be painting it?

John Deere green might look nice....

Have fun,

Marv

Re: circular molding ideas needed

#5

Lay it up with segments and turn it!

Stephen Shepherd in the State of Deseret

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Re: circular molding ideas needed

#6

Putty?

Bill Houghton, Sebastopol, CA

>Why aren't you puttying the stained glass in place, then covering it with molding?

I can't add anything on your original question that has not been answered far more competently by others.

Re: circular molding ideas needed

#7

Re: Lay it up with segments and turn it!

Marv

>Wonder why people click on a post with no message?....*smirk*

Re: circular molding ideas needed

#8

Re: Habit

Glenn Madsen near San Francisco

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Re: circular molding ideas needed

#9

Perhaps...

John in New Mexico

>A dozen or so thought up pithy replies, and in the process of composing them got writers block, or, once they saw the reply in print, decided it wasn't so amusing afterall, and decided not to post it.

Or perhaps we're all so engrossed in the discussion, we don't notice the *NM*

John (yeah, could just be habit too...)

Re: circular molding ideas needed

#10

Re: Perhaps...

Pam Niedermayer - Austin, TX

>OCD, just don't like to see unread messages in the middle of a thread I'm following.

Pam

Re: circular molding ideas needed

#11

Pam? OCD? You? Naahhh

Bill Houghton, Sebastopol, CA

>you're so...calm...

Bill, who spent the entire day trying without success to load some software and really understands why computer folks can get a little obsessive and twitchy.

Re: circular molding ideas needed

#12

Re: Pam? OCD? You? Naahhh

Pam Niedermayer - Austin, TX

>Well, it's not a serious case, but like you say, a little obsessive and twitchy. :)

Pam

Re: circular molding ideas needed

#13

Never even thought of that one...

John in New Mexico

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Re: circular molding ideas needed

#14

Which was why I mentioned it. :)

Pam Niedermayer - Austin, TX

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Re: circular molding ideas needed

#15

Thanks everyone... resolution...

Paul M. in San Diego

>Thanks to everyone that replied.

I thought a while about this, and came up with a better approach that will be much easier to implement. The thought of trying to make an internal circular molding that had to perfectly fit the out-of-round construction of the window was just too hard to think about.

I realized that an easier and ultimately better looking approach would be to install the glass panel, and then add a bentwood tubing into the port-hole to bring the diameter smaller to cover the gaps in the panel installation. This would also have the benefit of making the interior of this 4" deep hole be wood instead of the current textured drywall stuff.

Once I do that, then I can add a decorative molding on the *outside* of the window flush with the interior wall to cover over the edges of this tube. This is much easier to do with a segmented assembly than it would be inside the port-hole, as it would be similar to making a circular mirror frame. I may still need a very small quarter-round molding between this wooden tube and the stained glass, but that should be easier to fabricate than the large decorative molding I was initially planning.

Thanks again everyone!

-- Paul M.

Re: circular molding ideas needed

#16

Sounds good

Bill Houghton, Sebastopol, CA

>I'm always struck by the evolution of design solutions - continued thinking, however painful, can lead to some good outcomes. It sounds like you've got a good approach.

Re: circular molding ideas needed

#17

Easy way to go cherry picking....

wilbur

>In the preferences for WoodCentral, I set the display style to Guestbook, which displays all the messages in a thread in chronologic order after clicking on a message, but also has the advantage of clearing all the little cherries marking the unread messages.

The downside is that it make it a little hard to follow replies to messages, but it's not that different than how Sawmill Creek, Woodnet, or other forums work.

Re: circular molding ideas needed

#18

Don't Know How I Missed That *LINK*

Mike Fitterling

>I did an article on a round window trim install. It was not handtool work, but from what you describe the problem sounds similar, and of course you could substitute handtools and solid wood if desired. Anyway, maybe it will give you some ideas.

Cheers,

Mike


Round Window Trim

Re: circular molding ideas needed

#19

Thanks Mike! What a useful article!

Paul M. in San Diego

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#20

Glad to Help!

Mike Fitterling

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Re: circular molding ideas needed

#21

Re: Easy way to go cherry picking....

Pam Niedermayer - Austin, TX

>I take a two screen approach, one for reading a particular message and one for listing all. This works great for me. The only problem with having unread messages in the midst of an otherwise read thread is that I keep noticing the unread, rereading the title, and generally it mucks up my rhythm. I find this most irritating. :)

Pam

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