Ok so this question is regarding my Design and Technology GCSE, I have 5 pieces of 15mm thick plywood. These pieces of plywood have no middle and need to join together to make a sort of box with another piece of plywood that is 3mm thick on the bottom. I was thinking about just using wood glue to glue every piece together or would it be more durable if I drilled holes, through all the pieces, countersunk at the top and used screws instead or is there another way entirely for example biscuit joints.I'm limited to, while it is still very well equipped, a school workshop.
Wood – How to join several pieces of thick plywood together
joineryplywoodwoodwoodworking
Related Solutions
A router with a straight bit or a table saw with a dado stack are the two best options for this task.
A dado stack will be more versatile if you have multiple widths of plywood that you want to work with:
A straight router bit isn't adjustable in width, but it will produce a cleaner bottomed cut. They're often available in sets for different sizes of plywood:
If you'd rather not spend the money on either of those, you can always use a table saw with a regular 1/8" kerf blade and make several passes. Then you can clean up the bottom of the groove with a chisel. I wouldn't recommend trying this with a circular saw, but if you do, you'll definitely need to make a straight cutting jig for it.
Use a biscuit joiner.
Then glue and clamp to dry.
But depends what you using them for.
There not going to be heaps strong if the timber spands over a distance.
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Best Answer
Glue and clamp to laminate the plywood together. Just be careful to make sure all the pieces are all well aligned and clamped evenly - use additional wood top and bottom to spread the clamping force evenly and avoid damaging the plywood. Also be mindful that the glue will be squeezed out of the joints so will need to be carefully cleaned off before it dries.