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How do I build a wooden container in the shape of triangle?

I need to build triangular pull out/roll out waste bins to fit into nooks in my kitchen. Two sides are 18" wide and the other (front) side is 16" wide. The bin should be 24" tall (I have 34" of clearance between floor and counter.) A square box I could handle. The triangle has me a bit unsure of how to screw everything together. Has anyone ever built a triangular wooden box?

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Areas like this can be tough because (as I'm sure you know), not all measurements stay consistent from top to bottom (as not all walls, and builds are perfectly square). So, what I would do is take some cardboard to make a template of the area you have to work with. Once the cardboard template is made, tweaked and double-checked that it fits well, you can use it to measure out your angles and dimensions. With a mitre box you can cut the joints and with wood glue and some brads you should be able to assemble it without too much difficulty.

Since you have a 34" high opening and want a 24" high box, you'll also need to create a kick plate platform at the bottom and you'll probably want to close up a little underneath the countertop just for cosmetic purposes. That will eat up some of the height and allow the box to sit on something a little higher than just the floor, and then you don't have to worry about clearances around your baseboard moldings.

Let me know if you have any questions.
nicelly1 year ago
Professional renovation workers will certainly do!

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Why not make a pattern first out of cardboard and then use the card board to cut out your wood. cardboard is cheap if not free and a heck of alot easier to work with then wood.
Just build a triangle box with some ply wood and use some strips of 1x4 or some other board cut to the right angles so you can screw the panels together. be sure to use some Liquid Nails or other construction adhesive to help ensure you have a strong box. As for how it will slide in and out...

Pick a side and attach a couple of sliding rails to the side of the cabinet and the side of your box. Just get some good heavy duty rails that will be able to hold the weight of the box. If you have to keep the bottom of the box a couple of inches off the floor and use a small roller on the opposite side of the rails.

Considering the possible clearance issues you may run into with the molding on the right hand side i'd have the box and rails attached to the left hand side. You don't even have to make it a full triangle that fits all the way to the back corner.

The key is getting the right angles and getting those angles cut. Then its just like building any other bow.

It will look something like this. 16" wide on the face of it and it only really needs to go about 10" deep to be a reasonable sized trash can. So a 16"x10"24" would be a perfect trash can. Have the can's bottom sit a couple inches off the floor for a roller or 2 and your all set. Should be easy to find a set of draw slides that will extend just far enough that you will see no more then a 3 or 4 inch gap between the back of the box and the front of your counter top. Giving you plenty of room to put a trash bag in it.
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kamariden (author)  mpilchfamily1 year ago
Thank you for taking the time to give such a detailed answer. I really appreciate your tips and suggestions. :)
Another idea would be to have the box tilt out rather then riding on rails.
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