Why did 2 of my rubbers curl inwards?

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Well-Known Member
Aug 2021
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I'm wondering if I did something wrong to cause 2 of my rubbers to curl badly inwards towards the sponge. Are there specific actions that might cause this?

In my case, I did apply booster to these 2 rubbers, and then I took them off the blade and put both rubbers together in a ziploc bag for a few weeks.
 
This user has no status.
This user has no status.
Member
Apr 2022
187
82
340
I'm wondering if I did something wrong to cause 2 of my rubbers to curl badly inwards towards the sponge. Are there specific actions that might cause this?

In my case, I did apply booster to these 2 rubbers, and then I took them off the blade and put both rubbers together in a ziploc bag for a few weeks.

I think all boosted rubbers curl inward with time (sponge shrinks, top sheet stays stretched), is that right?

 
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