Loose pyraminx screw

[ebi15]

Hello
I have an urgent question.
I have two Professional pyraminx.
A common problem in both of them has happened!
their screws are loose after a few times solve!
And I tight the screws again
And again after some time to solves, are loose!
My brands are QJ and shengshou
Have you encountered this problem?
What should I do?
thanks my friends
bye

 

[Kattenvriendin]

I think a new core might be order.

HOWEVER..

inspect the screw on the affected side, and then especially that flat bit around the Philips +

on the inside, so on the side the spring is.

Is that all smooth? I have had it happen (on a cheapo mind you) that there was a big blob of metal on there, which held the spring in place instead of letting it freely rotate.

 

[feifucong]

Using a little superglue in the core may can solve this problem.

 

[Kattenvriendin]

But that will result in the screw never coming out again?

 

[Amir Nafisi]

I heard that in pyraminx
one screw should only be tightened
Not all!
Is this true?

 

[Kattenvriendin]

I have a master pyramorphix, you tension it like a 3x3. At least it has the same basic mechanism.. so.. I wager the same treatment is in order.