I have a Mammut stool that my family member use it for bathing so it is full of water inside. However, it is well structured so it doesn't seems to leak so easily, if shake the chair will hear a lot of water inside, I want to disassembly it to release the water.

I have tried to investigate the structure of the leg or other chair in the same series but still cannot detach the leg.

Does any one know how to do it?

Edit: 2022/2/15 It is the link for the stool product page (mine is green but I think it should be the same)

I have tried to contact local IKEA CS, they just reply with a link to the manual and the manual did not provide any clue for detachment.

Because the link might be changed in the future, so I try to put some specific images here for reference. This is the same color as my stool. Stool image

While this image is from the manual P.3-4. Mammut stool partial manual

  • 7
    Since it's used for bathing, drill drain holes at the bottom.
    – Ecnerwal
    Feb 2, 2022 at 14:00
  • Since water is getting in through somewhere it should be able to come out through those same places. Have you tried tipping/turning it to see if the water will leak out? It probably won't gush out, but it may slowly leak out - remember, it's sitting in water for 10+ minutes for the bath, so it will take at least that long for water to start leaking back out. Additionally, pics of your stool (or at least a link to IKEA's page and a pic or two borrowed from there) will help people get a feel for what you're dealing with.
    – FreeMan
    Feb 2, 2022 at 16:35
  • @FreeMan Thanks for taking time, I have collected the image and manual and put them into the question together. After observing several days, like what you said, it is not gushing out. It only leaks for some positions or shaking it. So the water saving could only possibly be drying out if not manually doing something on it. Feb 16, 2022 at 6:57

3 Answers 3


It's a plastic stool. Unless the legs are solid plastic (in which case water wouldn't be getting into them), simply drill a small hole at the bottom of each leg. This will allow the water to drain back out, probably more quickly than it's leaking in now.

Depending on how flat the bottoms of the feet and your tub are, you may want to define a "tip direction" by drilling the holes all on the same bottom corner of the legs. This way, you can tip the stool so all the holes are at their lowest point, allowing the water to quickly run out without the resistance of hitting the bottom of the tub. Most tubs (that I've seen) have some sort of texturing on the bottom to help make them less slippery, so this probably won't be a concern.

  • 1
    Adding a small vent hole near the tops of the legs and hidden below the seat would help with the drainage.
    – HABO
    Feb 2, 2022 at 19:09
  • Good point, @HABO. However, since water seems to be leaking in effectively without additional venting, it should also escape reasonably effectively without it. Add a small hole near the top of each leg if necessary.
    – FreeMan
    Feb 2, 2022 at 19:10
  • I am not sure if the leg is hollow or not but I am pretty sure the sitting base composed of 2 pieces. While shaking it, I could feel the water mainly staying in the sitting base portion. While shaking, there is very little water leaking out at the hole of connection between the leg and the base Adding venting hole will damage or not, I am not sure. I could see that from the manual, the leg seems using a reverse locking mechanism that the head of the leg injecting into the hole of the base is thicker, so after the "click" sound, it locked inside with the base closely locked itself too. Feb 16, 2022 at 7:02
  • Whatever the attachment method, @simongcc, the plastic, of the legs or seat, has a hole in it somewhere that's allowing water in during the bath but not allowing it back out fast enough for your satisfaction. Your goal is to get the water back out. Disassembling the stool is not likely to expose those holes that the water is leaking in through, so make a bigger drain hole somewhere in the stool, preferably somewhere low and not immediately obvious. If you're also (only) getting water in the seat, you'll need to make a drain in the seat somewhere, too.
    – FreeMan
    Feb 16, 2022 at 12:21
  • I think your method is sensible. But end up I have leaved it alone without using it. It almost dried out naturally. LOL. I simply don't want to use any intrusive method. This stool is designed to be assembled without dissembling mechanism probably for the endurability sake. Nov 25, 2022 at 14:08

It's easy. I had the same issue. Water stay inside the stool seat. Just put the stool flat on the floor and pull the stool leg vertically. Keep some pressure on the seat at the same time you pull the stool leg. It just come off easily. Hope this will help solve your problem.

  • Did this allow the water to drain?
    – FreeMan
    Sep 20, 2022 at 11:05

I used a flat head screw driver to pry off the top part of the seat. I emptied the water and put the part back after drying it out

  • Oh? Which part to start from? Does it eventually making any mark or loosening the structure after putting back? Jan 30, 2023 at 13:15

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.