Making long cabinet (9 feet) - Woodworking Talk - Woodworkers Forum
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post #1 of 22 Old 09-26-2017, 09:55 PM Thread Starter
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Making long cabinet (9 feet)

Cabinet grade plywood comes in 4x8 sheets - right? So how would you go about making a 9 foot cabinet? Pocket screw the extra foot on?
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post #2 of 22 Old 09-26-2017, 10:09 PM
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A cabinet 9' long usually has partitions somewhere. Put the seams there. If it's a wall cabinet put the seam on the bottom shelf at the opposite end as the seam on the top. If it's a base cabinet you could make the toekicks out of solid wood which does come in 10' lengths.

I don't care for pocket screws, I would either spline the joint in the plywood or dowel it. That way once assembled the joinery doesn't show.
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post #3 of 22 Old 09-27-2017, 07:09 AM
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What is the top going to look like? You could use 6" solid wood on each end as a border to match however you border the front and back.

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post #4 of 22 Old 09-27-2017, 07:45 AM Thread Starter
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It's for the base of a large entertainment center. Base will have several compartments/doors for holding movies, stereo etc. It is 9 feet long. And then two bookshelves on each side. The top is another question altogether. Ideas?
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post #5 of 22 Old 09-27-2017, 08:31 AM
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I don't know where you are, but there may be a plywood supplier that has 4 X 10 sheets.

There's one near me. https://harborsales.net/tabid/130/De...oductTypeId=26
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post #6 of 22 Old 09-27-2017, 09:24 AM Thread Starter
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Attached is a photo of what i'm building. Any suggestions or tips are appreciated!

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post #7 of 22 Old 09-27-2017, 09:26 AM Thread Starter
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Quote:
Originally Posted by Quickstep View Post
I don't know where you are, but there may be a plywood supplier that has 4 X 10 sheets.

There's one near me. https://harborsales.net/tabid/130/De...oductTypeId=26
oh wow!

I had no idea.

I'll check around.
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post #8 of 22 Old 09-27-2017, 09:43 AM
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Why not make the two end units go to the floor then build the center as a unit, that is the way I would build it if I were building it.

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post #9 of 22 Old 09-27-2017, 10:24 AM
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separate end units!

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Why not make the two end units go to the floor then build the center as a unit, that is the way I would build it if I were building it.
The top wouldn't show under the end units even if the just sat on the base cabinets, so no worries about matching grains. If they were separate towers like BigJim suggested, the result is still the same, no grain matching issues. You won't need 10 ft plywood. It's heavy enough to manage 4 X 8 sheets.... DAMHIKT.
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The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #10 of 22 Old 09-27-2017, 11:08 AM Thread Starter
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Why not make the two end units go to the floor then build the center as a unit, that is the way I would build it if I were building it.
Wow.

That is definitely the way to go. I can't believe I didn't think of that.

Thanks Jim.
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post #11 of 22 Old 09-27-2017, 11:17 AM
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Why not make the two end units go to the floor then build the center as a unit, that is the way I would build it if I were building it.
This would make the base unit easier to move when needed. I have an 8' base and it is a bear to move. However, it is heavier than normal because a lot of MDF was used in the interior to make the whole thing fire retardant. I used to store pictures and videos in there and wanted some manner of protection.

One example of need to move is new carpet.

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post #12 of 22 Old 09-27-2017, 12:01 PM Thread Starter
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This would make the base unit easier to move when needed. I have an 8' base and it is a bear to move. However, it is heavier than normal because a lot of MDF was used in the interior to make the whole thing fire retardant. I used to store pictures and videos in there and wanted some manner of protection.

One example of need to move is new carpet.

George
Did you make the entire unit out of MDF? I'm open to alternatives.
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post #13 of 22 Old 09-27-2017, 12:20 PM
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Did you make the entire unit out of MDF? I'm open to alternatives.
MDF inexpensive, nice surface for painting

MDF very heavy.
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post #14 of 22 Old 09-27-2017, 01:37 PM
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Did you make the entire unit out of MDF? I'm open to alternatives.
Birch was the primary wood used. Would not use MDF for an entire unit. I used it as inside material for such things as the bottom. Sides of unit were lined with MDF. MDF under top. It was used where it could function as a fire retardant.

I learned this property when the old Base Exchange on Eglin AFB burned in 1978. The basic wood in the structure was heart pine from years before. It was a big fire.

I had developed pictures in the BX that I had not picked up. They were in a photo storage unit made of MDF. The outside of the envelopes were slightly charred but the pictures were OK. They were returned to me.

George
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post #15 of 22 Old 09-27-2017, 03:16 PM
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Quote:
Originally Posted by Microscopes View Post
Attached is a photo of what i'm building. Any suggestions or tips are appreciated!

After seeing your picture, I recommend you build your 9' cabinet in 3 sections.
Each end piece 2' wide with the center cabinet 5' wide = 9'.
This will make it easier to construct and easier to move.
Once all set in place, you can attach the 3 pieces together.
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If you don't have time to do it right the first time, when will you have time to do it over?
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post #16 of 22 Old 09-28-2017, 06:00 AM
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For the last built in I made, I used plywood with a primed MDF overlay. It was sort of as if the outer plies were MDF. It painted beautifully. It was also dead flat. I don't know if that was because of the MDF overlay, or if it was simply the quality of the plywood, but darn it was it nice to work with flat plywood.

Last edited by Quickstep; 09-28-2017 at 06:02 AM.
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post #17 of 22 Old 09-28-2017, 07:14 AM
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Quote:
Originally Posted by Toolman50 View Post
After seeing your picture, I recommend you build your 9' cabinet in 3 sections.
Each end piece 2' wide with the center cabinet 5' wide = 9'.
This will make it easier to construct and easier to move.
Once all set in place, you can attach the 3 pieces together.


Too funny - I'm just now planning a unit the same way. Two 24"x'24"x84" towers with a 60"x24"x24" center console. Plan on bolting then together with M6x40mm Furniture Cams
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post #18 of 22 Old 09-28-2017, 04:43 PM
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Originally Posted by Bluenote38 View Post
Too funny - I'm just now planning a unit the same way. Two 24"x'24"x84" towers with a 60"x24"x24" center console. Plan on bolting then together with M6x40mm Furniture Cams
It would not be wise to build a 9' cabinet as a single unit.

If you don't have time to do it right the first time, when will you have time to do it over?
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post #19 of 22 Old 09-29-2017, 06:27 AM
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It would not be wise to build a 9' cabinet as a single unit.

How many people have built something as a single unit and then weren't able to get it out of the shop or into its intended destination. I know of one!
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post #20 of 22 Old 09-29-2017, 11:50 AM
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How many people have built something as a single unit and then weren't able to get it out of the shop or into its intended destination. I know of one!
Yes, like the old story of building a boat in the basement!

If you don't have time to do it right the first time, when will you have time to do it over?
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