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Forum topic by JonnyRocket posted 12-03-2018 04:30 PM 419 views 0 times favorited 12 replies Add to Favorites Watch
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JonnyRocket

9 posts in 455 days


12-03-2018 04:30 PM

Topic tags/keywords: bookcase cupped hand planing

I have a bookcase that I am working on, it’s already assembled and close to ready to be painted. The top of the case is slightly cupped, I’d say roughly 1/16-1/8” from the edges. What are my best options for getting this flattened? I have tried sanding and it’s just not feeling like I’m going to get the result I want. I have 0 functional hand planes in my shop, but I am not opposed to buying one to address this if that is the best tool for the job. Looking for ideas!


12 replies so far

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GrantA

1510 posts in 1801 days


#1 posted 12-03-2018 04:43 PM

Hard to say without seeing it. You could always add crown molding

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JonnyRocket

9 posts in 455 days


#2 posted 12-03-2018 04:54 PM

It’s small/short. Only 26” tall and has doors on it. They will likely put stuff on top of it so that’s why I’m trying to fix the cupping.

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GrantA

1510 posts in 1801 days


#3 posted 12-03-2018 05:03 PM

OK scratch that idea then! Solid wood I assume? What joinery? Short of a plane or belt sander I’m drawing a blank without seeing it

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JonnyRocket

9 posts in 455 days


#4 posted 12-03-2018 05:11 PM

Sorry at work and don’t have a good photo of the top from the right angle.

It’s being painted black so went with simple stuff. Solid doug fir simple butt joint pocket hole.

I have tried my belt sander, it just wasn’t feeling difficult to get just the right section sanded down and not oversanding the low spots.

It’s cupped like …. this is bottom—> ) <—>s my best plane for the job? I am a complete NOVICE with hand planing.

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GrantA

1510 posts in 1801 days


#5 posted 12-03-2018 05:14 PM

If you look at it from the side is it frowning or smiling?

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JonnyRocket

9 posts in 455 days


#6 posted 12-03-2018 05:29 PM

Frowning.

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GrantA

1510 posts in 1801 days


#7 posted 12-03-2018 05:33 PM

Have you tried tightening the pocket screws more? You’ve got a crown on the top, if you can’t tighten the screws more you might just want to leave it be

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sras

5097 posts in 3523 days


#8 posted 12-03-2018 05:46 PM

I don’t think you want to solve this by removing wood. The better option is to force it flat – is there room to add a couple boards to the underside? Run them front to back and use screws to pull the top flat. Slot the screw holes at front and back to allow for expansion/contraction of the top.

-- Steve - Impatience is Expensive

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JonnyRocket

9 posts in 455 days


#9 posted 12-03-2018 05:59 PM

The butt joints are glued as well, so tightening screws I don’t think is going to do anything. I think the same goes for attaching anything underneath. This is one of those I’m trying to fix something after it’s already put together sort of things unfortunately. Thanks for all the replies!

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GrantA

1510 posts in 1801 days


#10 posted 12-03-2018 06:21 PM

It may be glued but if it’s got a crown in the center then it isn’t tight there

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WoodenDreams

605 posts in 304 days


#11 posted 12-03-2018 08:08 PM

You could cut the top off, then reprep or redo your top, and refasten. as a last alternative. A couple years ago, I had to redo a top because I didn’t like the final result. Was more work, but well worth redoing.

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SMP

1058 posts in 299 days


#12 posted 12-03-2018 08:21 PM



You could cut the top off, then reprep or redo your top, and refasten. as a last alternative. A couple years ago, I had to redo a top because I didn t like the final result. Was more work, but well worth redoing.

- WoodenDreams

Agree, otherwise it become the “telltale furniture” and will bug you every time you walk by it.

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