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Build a mobile seesaw

With this cool DIY-summer project, you'll surely put a smile on your childrens faces. Our mobile seesaw is something for big or small and doesn't even disturb you while mowing your lawn. 

In this instruction we show you how to build one on your own. 



Material Tools
3x squared timbers 9x9x300 cm sliding mitre saw
4x terrace planks 300x14,5x2,8 cm cordless impact srewdriver
2x post anchors pen
2x post cap screw clamps
seesaw bearing  
thick rope  

Step 1: Cutting the parts

First, use a sliding mitre saw and cut the support posts for the seesaw. I recommend to stay between a length of 60 and 100 cm.

Depending on the previously selected length, you now need to calculate the length of the two crossbars connecting the two support posts. For this you simply take the length of the beams (60 - 100 cm) and subtract twice the thickness of the squared timbers.

The next step is to cut four beams out of the squared timbers. Two of the beams have the length of the outer edges of the post anchors.

The two beams on the sides are slightly shorter and have exactly the length of the metal bar for the seesaw.

Now you cut the two floor boards out of the terrace planks, each with a length of 80 cm and arrange them parallel to each other on the ground.

To measure the length of the diagonal boards, you should first arrange everything. Then you can saw the boards with a 45 ° angle. Here, the length should be chosen accordingly to make sure that the boards meet in the middle of the support posts and build a triangle.

Before you can finally screw everything together, you should at best mark the point where you want the seesaw bearing to be later on.

"Tip: use the seesaw board as a guide for the correct inclination, otherwise the seesaw might be too steep!"

Then you can drill the holes for the seesaw bearing into the support post. To make sure that nothing moves while working, my wood pieces get held down by screw clamps.

Step 2: The assembly

Now you can finally start screwing. I recommend screwing the cross struts to the support posts first. I do this with the help of my impact screwdriver. At the crossbars you should at best drill a core hole, the size is adjusted here to the selected screw diameter. Here I use my cordless impact wrench, because it handles large and long hex headed screws the best.

Now screw the post anchors with the bottom beams.

Afterwards, the floorboards can be aligned in the middle and be screwed on from below to the floor beams. Now screw the diagonal boards to the support posts and side struts from below.

The protruding corners of the stiffening boards, you can then saw off with the universal saw.

Now you take a squared timber and a terrace plank (both with a length of 3 meters) and align them centrally and screw them together. So that no one gets injured afterwards, you should remember to round off the corners well with a file.

Then mark the center onto the terrace plank and drill core holes and screw the seesaw bearing to the underside of the squared timber. Put the seesaw board into place and insert the metal pin laterally. Now you need to tighten it with the fixing rings to make sure that the seesaw is held in place later on. You can also grease the mechanics here.
Now tighten the nuts of the bearing until the seesaw is still easy to move on the axle. Finally, secure the axle on the outside of the support posts with flat bars to prevent it from slipping out.

Finally, you can mount the handles and a collision protection.

The handles are built out of a thick rope, which I fasten to the seesaw board by knotting them on the back of the board.

As collision protection, I take post caps. So that these don' t look boring, you can paint them. After the paint is dry, the post caps can be attached.

And finished is our mobile seesaw.


AuthorTobias Guttenberg
Reading time7 minutes

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