You can make this project easier and get all of the timber pre-cut at your local Bunnings. Here's our cut list:
Cut the 70mm x 45mm treated pine to the following lengths:
Cut the 17mm plywood to:
Cut the 25mm plywood to:
Lay the two pieces of timber on the floor for the frame of the top of your workbench. Use a pencil and square to mark on both pieces where you will attach the cross braces. Make sure the marks for the braces are evenly spaced. Next, pre-drill the holes for the cross brace, this will stop the timber from splitting. Line up the timber for the cross braces and ends where they will be attached to the frames. Use the cordless drill and outdoor screws to put the frame together. Repeat this process to build the bottom frame.
There's a simple way to make sure the plywood at the end of your workbench is flush. Before you build the legs use the combination square to measure the thickness of the plywood that will go on the ends. Mark this distance on the edge of both pieces of timber. Use the cordless drill to fix the cross braces for your legs on this line. Repeat this process for the other end of the workbench.
Once your two sides and ends for the workbench are made, it's time to put it all together. Insert the side frame into an end and screw the two together. Repeat this process until the ends and sides are securely joined and your workbench frame is solid.
Attaching wheels means you can take your workbench wherever you want. Use the cordless drill and screws to attach the wheels to each corner of your workbench. You might want to consider using lockable wheels so the bench doesn't move when you're using it.
A shelf is a handy place to store your tools and equipment. To attach it, turn the workbench over so that it's on its wheels. Place the plywood shelf onto the bottom frame, you may need someone to help you with this. Use the cordless drill to secure it to the frame.
Adding timber ends to your workbench will give it a really professional look. To attach them, put them into the recesses at the end of the bench and use the cordless drill and screws to secure them in each corner.