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38°/52° cutter for cornice molding

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Forum topic by 404 - Not Found posted 02-14-2013 02:45 PM 627 views 0 times favorited 6 replies Add to Favorites Watch
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404 - Not Found

2544 posts in 1623 days


02-14-2013 02:45 PM

I’m in the planning stages of quite a big job, I need to make a big cornice and have found the cutter I need in MLCS, they’ll ship it to Ireland too, which I’m delighted about, but do I need to use a 38°/52° cutter for the edges or will a 45° bevel do?

I can’t for the life of me understand why you would need the 38°/52° cutter, can someone please explain?

It’s for this application


6 replies so far

View frosty50's profile

frosty50

27 posts in 1001 days


#1 posted 02-14-2013 04:01 PM

You can use a 45 degree but the crown or cornice won’t sit on the piece like traditional crown. It will work have done it in a pinch on a project or 2.

-- frosty

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madts

1261 posts in 994 days


#2 posted 02-14-2013 06:59 PM

why don’t you cut the 52dwg/ 38deg on the table saw. One setting will do both.

-- Thor and Odin are still the greatest of Gods.

View Loren's profile (online now)

Loren

7556 posts in 2302 days


#3 posted 02-14-2013 07:32 PM

The router bit will cut both the spring angle and the 90
degree angle to it for the bottom 1/2” edge and top
1/2” face of the moulding.

-- http://lawoodworking.com

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404 - Not Found

2544 posts in 1623 days


#4 posted 02-14-2013 09:03 PM

Why 38° though? Yes I could do this on the jointer or TS, but why are crown moldings made like this and not 45° angle?
Is it to compensate for perspective?
I haven’t been able to find any information on why moldings are made like this, just curious as to why, does it have something to do with cutting compound mitres?

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Loren

7556 posts in 2302 days


#5 posted 02-14-2013 09:29 PM

I think it’s a classical (as in greco-roman) thing and
perspective might be part of it to.

Crown is sometimes made with a 45 degree spring
but it’s not that common to find it an I have never
seen a moulding catalog that specified spring angles.

-- http://lawoodworking.com

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404 - Not Found

2544 posts in 1623 days


#6 posted 02-14-2013 09:35 PM

Thanks Loren, I’ll dig out my George Ellis Modern Practical Joinery and see if he had anything to say about it.

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