Hai everyone! Just want to say this place is awesome, I never expected to find such massed enthusiasm for Lava Lamps!
anyway, I really need help with something.
I love my lamp. I rescued it from being thrown away when it's old owner didn't want it anymore. It took me a long time to find just the right lightbulb for it, but once I had that it worked a treat!
It worked just how I expected a lava lamp to for about a month. Then solid bits of the lava started to build against the side of the glass, even when it had been on for ages! I assumed it would melt off and I kept using the lamp. But slowly the mass of static lava has risen up one side of the lamp. Here are some pictures:


I assumed it would be a simple matter of unscrewing the lid and scrubbing the lava off the glass somehow. Two problems though: 1. I don't have any such tool that could do that and 2. The lid won't come off.

I'm probably being a idiot asking for help when I'm trying to fix a lamp that was due for the bin anyway, but I'll never afford a lamp again and I'd really like to keep this one working. Is there any way I can fix this problem wihout having to take the lid off? I'm hoping for an answer like submerge it in hot water or something..
anyway, any advice would be very very apreciated!!
Thanks everyone!