Handrail ø42 mm in Bendywood®-beech
bent around a mould with radius 130 cmSemi-circle in Bendywood® 42 mm Radius 130 cm

at a wood moisture content of 12%

After having taken the handrail from the mould, it was left unsupported (without any fixing).  

In this case, the bend had opened up to a radius of 170 cm.

Further opening up to a radius of 250 cm is feasible.



Handrail ø42 mm in Bendywood®-beech
bent around a mould with radius 95 cmSemi-circle in Bendywood® 42 mm Radius 95 cm

at a wood moisture content of 12%

After having taken the handrail from the mould, it was left unsupported (without any fixing).  

In this case, the bend had opened up to a radius of 130 cm.

Further opening up to a radius of 150 cm is feasible. 



Handrail ø42 mm in Bendywood®-beech
bent around a mould with radius 50 cmSolid semi-circle 42 mm R50

After having taken the handrail from the mould, it was left unsupported (without any fixing).  

In doing so, the following spring-back was noted:  

  • after 4 days the bend had opened up 5 cm (R = 52,5 cm)
  • after 10 days the bend had opened up 12 cm (R = 56 cm)


 

Semi-circle in Bendywood®-beech
composed of 3 layers of 10 mm each

  • Bent and glued around a mould with radius 60 cm.Semi-circle in 3 layers 10mm R60

    After having taken the semi-circle from the mould, it was left unsupported (without any fixing).

    In doing so, the following spring-back was noted:
    • after 1 day the bend had opened up 10 cm (R = 65 cm)
    • after 10 days the bend had opened up 12 cm (R = 66 cm)

  • The same was repeated on a mould with radius 40 cm.Semi-circle 3 layers 10mm R40

    In this case, the following spring-back was noted:
    • after 1 day the bend had opened up 5 cm (R = 42,5 cm)
    • after 10 days the bend had opened up 8 cm (R = 44 cm)

 

The tighter the radius is, the less spring-back you’ll get.
The more layers you have, the less spring-back you’ll get.