cutting molding need help

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MarkJohnston
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cutting molding need help

Post by MarkJohnston »

I need a comment on whether or not I should cut a relief in the back side of some molding I'm making.

I'm making some 5" wide molding that is suppose to match some 3" existing molding at least for the first 5".

I attached a end view picture of the 3" existing molding and a picture of the 5" molding sample that I'm going to be cutting. The back side of the 3" existing molding has a 1/16" relief cut that's about 1 1/2" long.
So my question is should I cut a 1/16" relief in the back side of the 5" molding? Is it cut to make the molding less resident to twisting or cupping over time?

Thanks for the help.
Mark
Attachments
smaller molding 2.9 inches wide.PNG
aspire view of 5 inch molding.PNG

MarkJohnston
Vectric Wizard
Posts: 820
Joined: Tue Jun 01, 2010 4:51 pm
Model of CNC Machine: CAMaster MC4848
Location: Prescott AZ

Re: cutting molding need help

Post by MarkJohnston »

oops I forgot to post the cut sample.
Attachments
Molding 5.0 wide sample picture 2.jpg

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Rcnewcomb
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Re: cutting molding need help

Post by Rcnewcomb »

What material are you using? Hardwood, MDF, foam, etc.
- Randall Newcomb
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MarkJohnston
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Joined: Tue Jun 01, 2010 4:51 pm
Model of CNC Machine: CAMaster MC4848
Location: Prescott AZ

Re: cutting molding need help

Post by MarkJohnston »

I'm using Oak to match the other molding. I have to produce 6 pieces 8 foot long.

Mark

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rscrawford
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Re: cutting molding need help

Post by rscrawford »

The relief in the back is mostly to help the molding fit better (in case of unevenness or protruding nails along the bottom of the drywall, etc).
Russell Crawford
http://www.cherryleaf-rustle.com

MarkJohnston
Vectric Wizard
Posts: 820
Joined: Tue Jun 01, 2010 4:51 pm
Model of CNC Machine: CAMaster MC4848
Location: Prescott AZ

Re: cutting molding need help

Post by MarkJohnston »

Thanks for the response guys.

I will cut the relief just to be safe.

Mark

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