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Coping Quarter Round Help Please

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Forum topic by Bobby870 posted 12-28-2020 01:48 PM 624 views 0 times favorited 11 replies Add to Favorites Watch
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Bobby870

3 posts in 65 days


12-28-2020 01:48 PM

I am working on installing quarter round and can’t figure out why my inside corners are looking like this. The joint is tight but the coped 45 piece never meets with the back end of the butt joint. Should the very top of the cope be at the back end of the other trim piece or will it always be like this and not go all the way to the back of the other trim piece?


11 replies so far

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bilyo

1301 posts in 2111 days


#1 posted 12-28-2020 03:12 PM

Did you intend to post a photo? It’s hard to answer without it.

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MikeB_UK

288 posts in 2043 days


#2 posted 12-28-2020 09:46 PM

Hi Bobby

I think you need at least 5 posts before you can add a pic, so you probably need to describe it more or make more posts.

Inside joint should look like this.

-- Be yourself; everyone else is already taken.

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Bobby870

3 posts in 65 days


#3 posted 12-29-2020 12:16 AM

I think I figured it out after many trials and changing the angle I was coping the trim at. Attached is a picture of what I kept getting where the joint was not going all the way back. I realized that when I got towards the bottom of the trim piece when I was coping it, I wasn’t back cutting it enough at the bottom, my cut was getting almost vertocle only. When I changed that angle at the bottom of the back cut, I now have the coped joint all the way to the back of the other joint.

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Bobby870

3 posts in 65 days


#4 posted 12-29-2020 12:22 AM

Here is the correct joint after I changed the angle of backcut.

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Jopldangla

48 posts in 138 days


#5 posted 12-29-2020 12:29 AM

Is it me… or does anybody else find it is easier to cope with a slightly dulled blade?

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bmerrill

126 posts in 1082 days


#6 posted 12-29-2020 02:16 PM

For small quarter round consider using a Dremel with the sanding drum.
First cut a 45 on the piece to be coped, then sand along the cut line at 90° to the long edge of the molding.
Once the material is removed angle slightly to do a back cut.

-- Woodworking, the transformation of nature to culture.

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Madmark2

2300 posts in 1597 days


#7 posted 12-29-2020 05:09 PM

Don’t obsess. Once you put a coat of paint on it no one will notice. After all it is toe molding, not exactly at eye level.

Once you’ve coped the piece, back cut with a pocket knife to perfect the fit.

-- The hump with the stump and the pump!

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therealSteveN

7235 posts in 1582 days


#8 posted 12-29-2020 06:12 PM

Thing about Cope cuts is, if you do them all the time, it’s a muscle memory thing.

If you don’t do them all the time, but want them to be flawless without a lot of fooling around, you buy an Easy Coper.

http://www.easycoper.com/crown_molding_coping_jig.htm

-- Think safe, be safe

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1thumb

248 posts in 3165 days


#9 posted 01-18-2021 02:59 PM

I cope w/Bosch barrell grip jigsaw an their scroll blades. Not for stain grade but fine for paint. An/or I’ll cut inside corners on a 44- degree, outside on a 46

-- I actually have two thumbs. Both prehensile and opposing.

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theart

233 posts in 1563 days


#10 posted 01-18-2021 04:47 PM



Don t obsess. Once you put a coat of paint on it no one will notice. After all it is toe molding, not exactly at eye level.

Once you ve coped the piece, back cut with a pocket knife to perfect the fit.

- Madmark2

I use a dowel wrapped with sandpaper.

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BurlyBob

8482 posts in 3274 days


#11 posted 01-19-2021 07:26 AM

Use some Timber mate wood putty in there. leave it for 20 minutes, wipe of the excess with a wet cloth, paint over it and no worries!

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