I have a Mathmos Astro lava lamp bought in 2020 that I need to open to get a piece of debris out. It has a screwed cap that is sealed with some kind of glue. How can I open it without destroying the bottle?

3 Answers 3


Just wanted to put this here because I wasn't able to find any information on how to break the glue sealing. Maybe someone will find this useful some day.

I used a hose clamp, a piece of old bicycle tube for increased friction, and pliers to grip the hose clamp. Didn't use too much force and came off with the first good pull.



I use a hairdryer on the cap for a couple of minutes which loosens the glue up.


There is a video now that takes you through the whole cleaning process.


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.