SUPER Simple DIY Concrete Garden Box – Part 2

Make your own DIY Concrete Garden Box! Build the forms and cast your own concrete panels that join together to make long lasting and durable garden boxes. This is Part 2 of this mini-series and the 4th version of the forms and panels.

I’ve been thinking about the design of the form for the DIY concrete garden box panels I’ve been casting. I want the forms to be easier, and faster to build, especially for those with little or no woodworking experience or tools. And I also want the casting process to be easier. And I think I got it with this new version of the forms. See Part 1.

See the Youtube Video and download the Plans.

SUPER Simple Concrete Garden Box Project – PART 2

SUPER Simple Concrete Garden Boxes - PART 2 - Cast the Panels
Watch this video on YouTube.

(this is a transcript from the video)

This is part two of my new super simplified garden box form and today we’re going to continue on with the building of the form and casting some panels.

DIY Concrete Garden Box Easy Form -

Reassemble the Garden Box FORM

I’ve let the mineral oil soak in overnight and it’s basically dry to the touch. Now so we can reassemble this form and look at our numbering system to remember which piece went where.

DIY Concrete Garden Box Easy Form -

Next thing we’re going to do is use some latex caulk to fill any large gaps that we have in any of the corners between the ends and the sides, or the sides and the ends and the base.

DIY Concrete Garden Box Easy Form -

I’m going to use just some latex base acrylic caulk for this — takes about an hour to dry and what I like about this particular product is that it’s not overly strong — it doesn’t hold everything together so much that i can’t get the forms apart again.

DIY Concrete Garden Box Easy Form -

We need a rag a knife just to cut piece off the end. And we’re just going to apply it here i’ve got a bit of a gap here because the width of the board was slightly more than nine and a quarter.

DIY Concrete Garden Box Easy Form -

So just lay a little bit of caulking in and then just smooth it with my finger. That’s all it’s required so look around here to see if there’s any other spots where i have a large gap.
You don’t have to be too fussy with this. I would think this is probably all that’s required to hold in the concrete. One thing to consider is that we’ve got a small rounded edge on framing lumber and where the side wall and the base meet. It’s going to leave a bit of a sharp edge so another option here is to caulk all the corners. It only takes a few more minutes so i think that’s a pretty good option. And (if needed) it scrapes right off with a paint scraper afterwards.
This is minimally what you would want to do but, I think I’m going to do caulking on all the inside edges. Like I say it only takes a couple of minutes and you don’t have to be too overly fussy here. You’re not caulking a bathtub or a kitchen counter.

Pour CONCRETE for the Raised Bed Panels

To get ready to pour concrete we need two bags of ready mix, a shovel, in this case we’re going to use mixing bin, or a wheelbarrow works fine, we’re going to use a little level to level out our forms, and we’re going to use some non-stick cooking spray, some safety equipment (gloves and a mask), I’m going to need a hammer or a wooden mallet to tap the form, trowel, or you can make your own float from some leftover wood from the project.

DIY Concrete Garden Box Easy Form -

And we’re going to add a little bit of cement color to our mix as well (totally optional).

DIY Concrete Garden Box Easy Form - Concrete Colour or dye

I have our forms sitting over a couple of saw horses. You can put them over a couple of chairs if that works for you. I like saw horses because then you can get under and to tap underneath the form to settle the concrete.
Also we want to level our forms in both directions.

Concrete Garden Box Easy Form - Level the forms

I’ve got it levelled in the long direction as well as check to make sure that we’ve got it levelled side to side as well.

DIY Concrete Garden Box SimpleForm - Level in both directions

I’ve got some non-stick cooking spray and I’ll give them a good coat with that.

DIY Concrete Garden Box Easy Form - Add diluted dye to dry concrete mix

I’ll add some some red cement color to the water(oh boy that’s red!) that was only about an ounce.

DIY Concrete Garden Bed Easy Form - Shovel wet concrete into form

DIY Concrete Garden Box Easy Form - Small trowel smooth surface of concrete

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