All Replies on Ever see crown molding wrapped around a tight curve?

collins foot

That cropped too much off. I’ll try another pic:

-- https://www.basswoodmodularllc.com/

@ waho,

I do cope inside corners.

I meant to ask about the outside corner curved around the bullnose corner.

-- https://www.basswoodmodularllc.com/

It’s hard to see the corner in the pic but I would assume either lots of small angle cuts, or you cut lots of slots in the back side, or i have no idea. Used plaster, steamed it?????

I see it now.

Makes my eyes cross…

-- This is a Troll Free zone.

mitered segments
bondo
sanding

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

I’ve seen one kind of like that…but it was formed plastic, and not as nice as yours.

-- Mistakes are what pave the road to perfection

Is this a test?
What I can see of it looks like a small outside corner-round.

I’ve turned these on a lathe mandrel from paper-glued blocks with a hole through the center (just like the base moldings) 4 corners at a time. I once had an 8ft circle crown turned on an outboard lathe faceplate. I’ve also milled them from solid stock on a shaper in stacked milling operations

Radius crown manufactured on-site from alternating strips, ripped vertically from two straight pieces of molding. The strips are applied one against the other and directly to the curved walls or forms.

Finally on large radius application, the crown can be milled in flat arcs. The arc segments are made to equal the base of an inverted cone which is equal to the radius of the desired curve. “Sprung Molding”

-- Jim Baldwin/[email protected]

Look at it differently. As wseand said, “I see it now”.

-- This is a Troll Free zone.

Turn it on a lathe with a small tenon in the chuck. Shape the outside, then hollow the inside. When finished, quarter it and you have enough for four corners.

-- Bill, Thomasville, GA

I do it by cutting segments then filling and sanding. Standard way of doing it. That looks like a very tight corner, nice work.

-- Tom Finnigan - Measures? We don't need no stinking measures! - Hmm, maybe thats why my project pieces don't fit.

Rip Crown into narrow strips then attach one strip at a time or use a small form. The only problem is you need 20’ of molding to cover a 4’ section. All depends on how many strips you need to rip it into and that will depend on the profile. REAL PITA but the finished product makes a big difference. Nice Job!!!

-- John

I doubt you did it this way, but another method would be to use a hot wire and cut it out of a block of Styrofoam then coat it with drywall mud, sand to finish.

The second picture looks like a counter top.

-- This is a Troll Free zone.

If that is paper stuck turning, what kind of paper would you use between segments?

I don’t know how but it’s cool you did it. I like the traditional look better.

-- Alaskan's for Global warming!

Jello mold.

-- Quote from ebay tool listing: " Has nicks and dings wear and tear dust and dirt rust and pitting but in good working condition"

First guess: Lots of funhouse-style mirrors.

Second guess: Photoshop.

Third guess (least likely): woodworking.

just kidding, of course. Very cool. No idea how you did it. Enlighten!

-- Bailey F - Eastern Mass.

A bunch of good responses here! Most of which would work… would work… heh heh.

Anyway, I would turn and quarter these corners for stain grade work.

I used techniques borrowed from the plaster trade. I did 6 corners, which would have required two turnings—this nudged me to go the plaster route. I made a profile knife, backed the corner with dowels and expanded metal lath.

A bonding primer on the ends of the wood crown and the dowels along with the the lath screwed stapled and screwed in place made these joints more stable and resistant to cracking than wood to wood connections in the house. I inspected the woodwork a year later and was impressed with how these corners held up.

The lath was double layered, one layer straight across the dowels and the other layer cone-shaped to support the profile just behind the face.

-- https://www.basswoodmodularllc.com/

Here is the wire lath shot:

-- https://www.basswoodmodularllc.com/

If you want to read up on the details, I wrote an article about the process for Fine Homebuilding:

http://www.finehomebuilding.com/how-to/departments/master-carpenter/sculpting-a-radiused-crown-molding-in-plaster.aspx?nterms=65282,65448

Also the second photo I posted here was taken by Chuck Bickford after a full winter drying cycle. This was in new construction, where most movement occurs during the first winter heating season.

I took the others photos.

-- https://www.basswoodmodularllc.com/

Thanks for sharing that Brian,very cool.

-- https://www.artisticwoodstudio.com/videos

Well done. Hope you got paid well for that.

So what does Bill win?

-- Quote from ebay tool listing: " Has nicks and dings wear and tear dust and dirt rust and pitting but in good working condition"

^^^^^^^^^^
Yeah, what Picklehead said.

I’ve done segmented corner radii for straight corners, but that would be very inefficient for crown molding. That’s why I thought turning a piece would be the way to go for real wood. Taking that a step farther, one would cut four slabs thick enough to handle the shape, bevel the edges, and set them in an angled circle. Glue them up and turn the shape. The four slabs ensure you have something near face grain on all four pieces.

I like the plaster/shaper approach that basswood posted for paint-grade projects!

-- Bill, Thomasville, GA

basswood, if you stare at it long enough it becomes a counter top. Try it.

-- This is a Troll Free zone.

DKV, it is a confusing image, if you don’t know what it is!

BArnold, that is the way to orient the stock for turning, for sure.

Yep. Bill (wseand) is the winner. He wins the art piece above:

-- https://www.basswoodmodularllc.com/

Very interesting, thanks.

Hey, I’ll take it. A winner is a winner even if it is the Booby prize.

Edit:
There is only a few ways I know how to do that, and now i can add turning it to the list. Not that I could ever do that it that way.

That was a great editorial you did, well done. I really enjoy new learning new techniques on ways to do things.