Derf59 , you need to check the rulesDerf59 wrote: on Friday 15 August 2025, 11:40
That means this rubber is illegal (should be <= 2mm)akathedude wrote: on Thursday 14 Aug 2025, 19:37
Rubber thickness: 0.3mm
Rubber + pimple : 2.1mm
Pimple height : 1.8mm
Pimple diameter : 1.8mm
Spacing : 1.4mm
Density : 11-12 pimples per cm2
You are wrong on so many levels
First of of all , in the context of rubbers. yu cannot use the word "illegal" carelessly.
The word "illegal" is reserved for rubbers that are in violation violate common law by using spein glues or boosters (Of course they are also ITTF "unapproved" under ITTF Rule 2.4.7 & Regulation 3.4.2.2
What you referring to is use of rubbers that are just violating the ITTF rules & regulations ONLY not common law violations . In this case you are referring the rule that limits the top sheet thickness ONLY to 2.00 mm after 1977 BGM at Birmingham & to 2.05 mm after 2024 AGM at Busan.
This top sheet thickness includes pip length plus base sheet plus the glue that connect top sheet to the sponge.
You cannot use the word rubber just for the top sheet only if you are using a rubber sheet that is not OX but has both top sheet and sponge
Rubber = top sheet + sponge.
The total allowed rubber thickness of a sponge is used is NOT 2.00 mm before 2024 (or 2.05 mm after 2024)
The total maximum allowed rubber thickness of sponge plus top sheet is 4.00 mm before 2024 and 4.05 mm after 2024.
So you cannot say "That means this rubber is illegal"
You can say "This top sheet or OX rubber is unapproved"