I will assemble 18mm plywood boards to create the frame of a piece of furniture.

When I assemble the frames, they will give me a 90-degree angle.

How do I assemble this in the best way? (I don't have brads) I won't see the holes at all. So we're only talking about time and strength here 😁

1. Pocket Hole jig. Drill and screw together
Two plywood boards joined at a 90-degree angle using pocket hole screws. The boards are placed on a fabric surface.

2. Pre-drill and screw through the board into the end grain of the plywood
Hand holding a screw near the edge of a thick plywood board, preparing to drill for furniture assembly.

3. Drill through the board and into the end grain and plug with wooden dowels
Plywood boards joined at 90 degrees using dowels for a furniture frame.
 
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Norschan
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Wooden dowels are probably the best, if they won't be visible you could also consider a wooden block or metal brackets to screw into.
Screwing into the end grain of plywood is usually not a good idea, but if the plywood is as thick as in the picture maybe it will work.
 
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partyoverallt
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If it can be done without being visible, the pioneer's tip of using a piece of wood on the inside of the angle is cheap and good. Glue and screw it for real strength without any special tools.
 
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cpalm and 1 other
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Thank you for the response.
Pocket hole would be visible
Kloss would be visible, and also take up some space, as well as complicate the shape of the shelf
Angle iron would be visible

Of the above, a pocket hole would look the nicest... but maybe also the hardest to get perfect
 
Plug and glue.
 
Work nail doesn't cost many kronor so if you have to buy something else anyway, bring home two lengths.
 
Perhaps it was silly to ask, because I went with pocket hole in the end even though no one recommended it here.

Turned out insanely good and stable, far exceeding expectations and probably much more stable than end screw or plug could ever be. RECOMMENDED!

Wooden structure using pocket hole joinery in a DIY project, showcasing stability and craftsmanship, with visible pocket holes on plywood beams.
 
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SC Aero
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