To keep extra long pieces steady add an auxiliary fence.
How to attach two sheets of plywood.
All you need to do is grab wood planks then lay it sideways along the wood pieces.
Connections between two pieces of plywood vary depending on the purpose.
You say it will be on the ground so you should use pressure treated and pl premium or titebond 3 glue.
You can make splines from plywood or solid stock.
Absolutely bopper simpson strong tie sheathing clips are used to join two pieces of sheathing at the edge.
Using a backer block to stop tear out cut kerfs on the ends to form a groove as wide as one third the thickness of your stock.
A butt block joint is made by edge gluing two pieces of plywood together and adding a backer block to one side of the seam.
The width of the butt block should be a minimum of 16 times the thickness of the plywood you are using.
If your exterior plywood sheets are 4 feet wide for example a 10 foot wide wall will need 2 1 2 sheets.
A wooden butt block joint provides a simple way to attach two adjoining pieces of plywood together.
I think frank has the solution four sheets of 3 8 plywood two running opposite to the other two.
Two pieces that meet at a right angle will use one type of joint and those that join end to end.
The starting point of the project is to line your plywood sheets against your wall to know how much you will need.
First gather up some heavy objects say cinder blocks.
If you want to bond them together to make a single sheet of 8ftx2ft x 1 1 5 inch thick plywood you need to do this.
Plywood or metal strap.
This 20 guage clip is for 3 4 inch sheathing as noted by the stamped 3 4 but they also make clips for other common plywood thickness.
Next glue or nail the plank onto the surfaces of the wood pieces.
Next plane and saw the spline blank stock to match the width and combined depth of the grooves.
Maybe explain a little more what the purpose is.
This is considered the simplest method to connect the woods and the appearance is not highly important.
Step 2 line the plywood sheets against your wall.