Simple Concrete Raised Garden Beds – Part 1

Make the BASE of the form for the Concrete Raised Garden Beds

Selecting lumber to build concrete forms

If you’re at all intimidated by woodworking — don’t worry, I’ll go through everything you need to do.

Selecting lumber to build concrete forms
The lumber for these simplified forms are all standard sizes and can be bought at any big box hardware store or lumberyard. Look for boards that are straight and flat without any twist or any cracks — and few if any knots. Try to select the best ones you can find even if you have to sort through a pile.

Good lumber will make everything easier so it’s worth it to be fussy here. I’ll look at the condition of the end of the 2 by 10 and 1 by 4.

Selecting lumber to build concrete forms

I want to avoid any cracks.

Layout the Cuts

Selecting lumber to build concrete forms

I also want to check the width of the board. It should be 9-1/4″.

Cutting the base lumber for the concrete form

And I’ll check if the ends are cut square. If so, then I’ll take advantage of that for one end of the base.

Cutting the base lumber for the concrete form

I’ll make a point 4-5/8″ from one side. This marks the center line of the board.

With my square on the end, I’ll draw a line in a couple of inches.

Cutting the base lumber for the concrete form
I’ll try to indicate metric equivalents where possible. The plans have dimensions in both inches and millimeters.

Cutting the base lumber for the concrete form

I’ll make another mark two inches in from the corner and draw a line with the square.

Cutting the base lumber for the concrete form

This is the corner I’ll be removing.

Cutting the base lumber for the concrete form

Ready for the Saw

I also trace these lines around each edge to the other side. This will help me check that I’m sawing straight and square.
To make the base I’ll be using two hand saws, a regular saw and a finer tooth stiff-back miter saw, a pencil or a pen, a measuring tape, and a 12-inch combination square.
From an eight foot two by ten, two eight foot one by fours, and a four foot length of three-eighths pipe, you can build two 36 inch forms.
I support the board over sawhorses. You could use some chairs for this as well.

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