Uniaxial Glass Fibre, Biaxial Glass Fibre, Double Bias Glass Fibre Cloth
Here you will find uniaxial fabric, bi-axial fabric, and double bias fibreglass cloth with weights up to 500 grams per square metre. Heavier cloths and other constructions are in heavy multiaxials.
Uniaxial Fibre Glass which is also called Unidirectional has most of its fibres running in one direction, usually along the long axis of the cloth. (0 degrees or Warp uniaxial to the purist). When embedded in the resin matrix, uniaxial has most of its strength in the direction of the glass fibres. Often used for centre boards and rudders, with the fibres along the length of the board. When all the fibres run across the roll (unusual) it is called 90degree or Weft Uniaxial.)
Biaxial Fibre Glass has about half of its fibres aligned along the length of the cloth (0 degrees) and about half across the cloth (90 degrees). This cloth is often used for sheathing the side of a larger hull where strength is needed, but the direction of the load is not well known or its changes. It is also used to make composite panels.
Double Bias has about half of its fibres laid at 45 degrees to the length of the cloth (+45 degrees) and the other half of its fibres at right angles to the first lot, and they are thus also at 45 degrees (-45 degrees) to the length of the roll. It has similar uses and strength to Biaxial. It is often used to cover joints between panels so that fibre crosses the joint. In the US, double bias is also called biaxial. This is a problem for Australian builders using plans from the US as they often are not aware of this.
We also include a Weft Triaxial here because it is only 189gsm. This is an interesting cloth, it has 1/3rd of its fibres at +45 degrees to the length of the roll, another 1/3rd at right angles to the first (-45 degrees) and the remaining third running across the cloth so that it is at 90 degrees to the length of the roll and 45degrees to both lots which are on the "bias".
Please note that all these cloths are 1.27m wide, so a roll is too long to go by Australia Post. Either we must fold them (which does crease them) or we will need to send them by courier or freight carrier.
Take care if sending using Australia Post or a satchel. Click here for Shipping Notes.