Materials

Fibreglass types:

Not chop mat, woven
With fibreglass weaves: warp is vertical, fill / woof / weft is horizontal
Glass yarns are designated codes: 3 letters
- 1^st letter: Electrical, high-Strength
- 2^nd letter: indicates type of strand (Continuous)
- 3^rd letter / Pair of letters: thickness of strand
E-glass Fibre types:
- http://www.fibreglast.com/product/Style_120_E_Glass_573/Fiberglass_Fabric
  - $10 US per yard * 38” wide
  - Continuous woven, 5micron thick weaves
  - Ca. 125.5 g per m² (3.7 oz per yd²)
  - To break, 93lb/in has to be applied (warp is vertical, fill / weft is horizontal) => 1660.76 kg/m
  - 4 HS weave => warp is above fill after every 4^th
  - Thickness is 0.0042 in = ca. 0.011cm
- http://www.fibreglast.com/product/Bi_directional_E_Glass_1094/Fiberglass_Fabric
  - $9 US per yard * 38” wide
  - Continuous woven, 9 micron thick weaves (ECG 75 1/0 warp, ECH 25 1/0 fill)
  - Ca. 288.2 g per m² (8.5 oz per yd²)
  - 4H modified twill
  - Thickness is 0.0097in = ca. 0.025 cm
- http://www.automateddynamics.com/about-us
  - Contact for e-glass fibre glass
- https://www.rayplex.ca/page90.html
  - - Woven roving fibreglass
- https://www.aircraftspruce.ca/menus/cm/fiberglass.html
  - Woven roving e-fibreglass
- http://jushiusa.com/data-page-by-tag/20
  - Woven roving e-fibreglass

Resins + hardeners

Physical properties not an issue
Just have to make sure watertight!
Otherwise consider fiberglass first
http://www.fibreglast.com/product/System_2000_Epoxy_Resin_2000/Epoxy_Resins
- 45,170 psi tensile strength with fibreglass
- Potlife (time for handling) 1 hour – 2 hours
- Density: 0.401 lb/in³ = 11099.7 kg/m³
http://www.fibreglast.com/product/System-1000-Epoxy/Epoxy_Resins
- 46,168 – 42,784 psi tensile strength
- Potlife: 11 – 23 minutes
- Density: ?

Composite contacts: