Fragile Classic Space sets?

[Moriboe]

I like to rotate the sets I have on display and make alternative builds, so I'll be breaking apart sets often. Problem I found is that old bricks (as often the case with classic space) can be fragile and lock together too firmly, resulting in the occasional broken piece. For some sets I don't dare follow the instructions out of fear it won't come apart again with the pieces intact, usually when pressing down plate upon plate.

So after another incident today I was wondering if it is a known issue and how others deal with it? Considering for neo classic space usually blueish gray is used, maybe you don't use your old sets for MOCS?

[Fuppylodders]

I haven't tested it, but I wonder if it might be an idea to submerge the build in warm water to warm the plastic up a bit to help loosen the material a little...?

[Moriboe]

I'll keep it in mind next time there's a pressing need :). Thanks for the tip!

[snefroe]

Actually, you're right... I have the same problem with the lego bricks of late 70's to mid 80's. Especially the sides of plates easily break. Be very careful