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Why?

1822 Views 5 Replies 5 Participants Last post by  Jeremy E
I came across Bass' old "table saw millwork" thread with this picture.

It got me wondering about something I've never given a thought to before. Why the "relief cuts" on the backside of mouldings?

Please learn me up on this one. Thanks.

Jeremy

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Because trim is mostly covering imperfect
joints between dis-similar materials,
that usually are not in perfect plane. :thumbsup:
Allows for the use of sealants and reduces cupping are two reasons I can think of.
Makes the trim more flexible--Easier to install on irregular walls.
Have you ever tried to case an opening with 1x stock and its very hard for it to lay flat or to line up a miter!

With relief cuts in the backs elimates that and helps the moldings lay flat on imperfect or bulged openings or walls!:thumbsup:
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A little slice of genius. Very well put:thumbsup:.

Good answers all. Thanks.

J
Because trim is mostly covering imperfect
joints between dis-similar materials,
that usually are not in perfect plane. :thumbsup:
1 - 6 of 6 Posts
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