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Old 06-15-2012, 05:49 AM   #1
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Poplar vs pine for sliding door


Hello all,

I need to make two sliding walls for a closet, to be hung on bypass track. The track is designed for 3/4 inch thick doors. I was going to assemble each door as a flat panel insert, using pocket screws. Each door will be 9'x4'. The panels will be 1/4" mdf. The rails and styles will be 1"x4". Which wood is best for this size door? Pine or poplar? Other option? The finished doors will be painted.

Thank you in advance

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Old 06-15-2012, 06:05 AM   #2
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Poplar vs pine for sliding door


9 feet x4 feet?---Those will not stay flat using 3/4" stiles and rails--sorry---

Get heavier track and go for 1 3/8" minimum stiles and rails--I would use a glued up section made of two 1x4s---Poplar or fir would be safe choices--use the best straight grained,clear product available.

I suggest tennoned joints --glued--those pocket screws will allow the stiles to roll out of plane on a door that large.

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Old 06-15-2012, 06:59 AM   #3
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Poplar vs pine for sliding door


Thank you mike. That was my fear. If I changed the height to 8', could I keep the thickness 3/4" by ripping some type of engineered wood like ply of mdf, to make the rails and styles? My concern with mdf is it might bend at 8' lengths but I could be wrong.
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Old 06-16-2012, 05:38 AM   #4
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Poplar vs pine for sliding door


Wood will twist ---3/4 inch is just to thin---even steel or aluminum would be floppy in those sizes.
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Old 06-16-2012, 11:30 AM   #5
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Poplar vs pine for sliding door


Quote:
Originally Posted by oh'mike View Post
9 feet x4 feet?---Those will not stay flat using 3/4" stiles and rails--sorry---

Get heavier track and go for 1 3/8" minimum stiles and rails--I would use a glued up section made of two 1x4s---Poplar or fir would be safe choices--use the best straight grained,clear product available.

I suggest tennoned joints --glued--those pocket screws will allow the stiles to roll out of plane on a door that large.
I think I would be inclined to put support midway down the 9 foot dimension also. Just cut panels for top and bottom sections.

Maybe I am old school but I think I would use 1/4" tempered masonite before MDF that thin for the panels. I am not sure I could make a strong argument as to why though.

And I too would add some sort of joinery---tennons would do it---and not rely just on pocket screws and butt joints.

Last edited by user1007; 06-16-2012 at 11:55 AM.
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