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Derf59 wrote: on Friday 15 August 2025, 11:40

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

That means this rubber is illegal (should be <= 2mm)

Derf59 , you need to check the rules
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"

BTW "long" pips were banned at the 1977 BGM at Birmingham when ITTF reduced the maximum allowed pip length of ANY pip rubber to 2.00 mm.
Pip lengths of more than 2.00 mm were allowed before 1977/
Also note that this maximum length of 2.00 mm before 2024 (and 2.05 mm after 2024) is for any type of pips long or medium or short .

Therefore "long" pips were actually banned in 1977.
But IITF continues to call them long pips just to confuse the clueless choppers.

The correct name for rubbers on ITTF LARC is slim (flex) pips and wide (stiff) pips

This is explained clearly here in webpage below (click on link below)
slim and wide pips

akathedude wrote: on 15th August , 2025, at 14:49
I think the new regulation authorises to 2.05mm if I’m not mistaken.

You are half right & half wrong
Yes the maximum allowed pip length was changed from 2.00 mm to 2.05 mm at the 2024 BGM in Busan, South Korea
No the change was not a regulation change . It was a rule change
Similar to a rule change at the 1977 Birmingham BGM to ban all long pips when ITTF set the maximum allowed pip length to 2.00 mm.

But ITTF has continued to call their slim (flex) pips on their LARC as long pips to brainwash the pips players, especially the clueless chopper fools