# Thread: Just want to be sure.

1. ## Just want to be sure.

I'm making a little jewelry box for my granddaughter. The plans I have says to rout a 1/4" rabbet, 5/32" deep along the outside bottom edges. I think that means 1/4" up the side and 5/32" into the side. So there will be a groove 1/4" high, 5/32" deep along the bottom. Am I correct or is it the other way around, 5/32" up the side and 1/4" into the side? I started to rout it but got nervous. Really don't want one of these

2. "there will be a groove 1/4" high, 5/32" deep along the bottom" <- that's how I read it. Cross check the math on what the dimensions of the piece used for the bottom are.

3. My way of thinking is that if it said make a 1/4" dado 5/32" deep it would be obvious how to do it. By replacing dado with rabbet it should be a 1/4" wide rabbet (across the top of the board) 5/32 deep. So I would say it's the second option you mentioned.

4. Now I'm really nervous... it's 1 to 1. Guess I will have to do the math after I get a couple cups of coffee in me.

5. It sounds to me like the intent is to make the bottom panel (1/4" thick) flush to the bottom edge of the sides. A 1/4" rabbet, 5/32" deep is the way to do that, of course. Making the bottom panel flush with the bottom of the sides will take some careful trimming to get a perfect match but it will be worth the effort.

6. paul relax take and see what the bottom size is for the bottom is it 1/4" solide wood or is it plywood? if its ply the plywood now days is thinner and would be the 5/32 thickness if its solid wood then it would be the 1/4" use some scrap paper to check this out for fit before making a cut.. to me i agree with bob if it says rabbet its going the second way you thought.. a dado is a grove that is a predetermined width and is cut to a certain depth.

7. I'm going to make it 2/1. Since a rabbet is just a dado cut along the edge of a board & a dado is defined as width x depth, then a rabbet should be (to maintain standard descriptions) defined the same way, i.e. width x depth (same as with a groove as well). So, I'm on the same page as Bob and agree with your second interpretation. I'm betting the math will prove this.

8. I interpreted it as 1/4 wide (thickness of your bottom piece) and 5/32 wider on each side than the un-cut bottom of your box, so the bottom will end up 5/16 (5/32 + 5/32) larger total in each direction when cut to size (assuming rectangle or square...or hex, octagon, etc ).

Edit: Where is a sketchup drawing when you need one (hint...I don't have it installed here at work).
Last edited by Darren Wright; 07-10-2013 at 01:30 PM.

9. Draw a cross section story board. Don't need SketchUp for that.

10. Maybe this will help visualize it:

Two sides with the bottom inset to them.

Last edited by Bill Arnold; 07-10-2013 at 03:26 PM.

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