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Solid 11.5mm silicone cord for bending 12mm ID rigid tubing

Bykski

Bykski 11.5mm Rigid Tubing Bending Cord for 12mmx16mm Tubing diy cooling

SKU CH-NZN6-GW9CM

Solid 11.5 mm silicone cord prevents 12 mm ID acrylic or PETG tube from collapsing during heated bending

  • Product typeCPU Block
  • Prevents tube collapse during bending with solid 11.5mm silicone insert
  • Enables complex bends in 12mm ID acrylic or PETG tubing
  • Durable silicone material withstands repeated heating and shaping cycles
  • Tight fit design eliminates kinks, air pockets and flat spots
  • Single 3-foot piece stretches and lubricates for secure installation

11.5mm Bending Cord for 12mm ID Rigid Tubing

The Bykski bending cord is a solid silicone insert designed for 12mm inner-diameter acrylic or PETG tubing. It prevents the tube wall from collapsing or forming cavities when the tubing is heated and shaped. The cord is sold as a single three-foot piece and requires stretching and lubrication before insertion.

Solid silicone core resists deformation during

Because the insert is solid rather than hollow, it maintains internal support throughout tight or compound curves where a hollow cord might buckle. The tight fit eliminates air pockets and flat spots that would otherwise appear on the outer surface of the bend. Removal takes more effort than with a hollow insert and the material cannot be stretched as far.

Replaces makeshift mandrels

Builders who previously used improvised rods or hollow silicone tubing gain repeatable results on intricate routing. The upgrade is worthwhile when the loop demands multiple tight-radius bends in 12mm ID tubing and the installer is prepared for the extra effort of stretching and extracting the solid cord. It is not suited for tubing with a different inner diameter or for soft tubing that does not require heat forming.

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Price $16.99
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Specifications

Product
Product typeCPU Block

Questions about this item

Does the 11.5 mm solid cord generate noticeable heat or noise when used for long bending sessions?

The solid silicone cord itself produces no heat or noise; any warmth comes only from the external heat source you apply to the 12 mm tube during bending.

What tube dimensions must I already own for this 11.5 mm cord to fit correctly?

You need rigid acrylic or PETG tubing with a 12 mm inner diameter and 16 mm outer diameter; the cord is sized for that specific wall thickness.

Will the cord work inside older 12 mm acrylic tubing that has yellowed or stiffened over time?

Yes, as long as the tube still measures 12 mm ID and 16 mm OD the cord fits; you may need extra lubrication and patience to insert it into stiffer material.

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