Small stool for small children.

Seat height on the one in the picture is about 21 cm but can be made lower or a little higher. The seat is 20 cm in diameter.

I used the print settings in the file, but the model was filled with plaster. If you don't want to fill your model you will need to add extra layers to get the strength needed. If you do please share your print settings and results so others can get it right easier.

The one in the picture i made in abs-gf. The seat is filled with plaster of paris for extra strength. This makes it very strong and hard so the seat doesn't flex. The legs are 20 mm diameter oak. I include a jig for sawing the right angle. I used a thin bladed japanese draw saw. The foots of the legs i rounded with a router with 6 mm radius. I include the jigg I used for that. If you don't have a router you can instead use the saw jig with 2 angled cuts to get the ends flush with the floor. I used abs filament mixed with acetone to glue the legs to the seat. I did som superficial cuts with a saw on the glued areas of the wood for extra adhesion. With the plaster, the oak and the glue, it turned out very strong and it supports a 90 kg adult standing on it carefully.

About plaster filling:

Plaster filling is a great way to make you models a lot stronger while using minimal amount of filament. The models will also get hard and quite heavy. The feel is closer to holding a ceramic material than a plastic. This model weighs over 800 g when filled. Note that you can only use gyroid or crosshatch infill, as there are no closed walls in these infills, and you should not use too much of it. 12% or less or it will be hard to fill. Make sure to use the right amount of water for casting (not modeling). I used 1 to 0.7 plaster/water by weight.

Filling can be messy and you want as little as possible to get flushed down your drain as it can cause blockage. What i do is that I mix the plaster in a sealed plastic bag and cut a hole for a nozzle in one corner and I use Blu Tack to seal. This makes it a lot easier and so neat that it can be done at home in your kitchen. The plaster can be pushed in to the model by squeezing the bag. Air will escape through the microscopic holes that are almost always present in FDM prints. When the model is completely filled you seal the hole with the plug. Plaster of Paris hardens quite quickly but a single model can be filled without too much stress. For filling larger or multiple models i recommend using citric acid as a retarder to get more time before it sets. Very small amount of citric acid is needed. 0.5 g to 1000 g of plaster powder will give you at least 40 min before it starts setting.  

I include the nozzle for the bag. It will fit the hole at the bottom of the model. Note that the bottom of the fill hole needs to be opened with a drill before filling.