Panel Size & mesh

Panel Length m

Panel Height (Depth) m

Mesh Bar Length, Knot to Knot mm

Half the stretched mesh: a 100 mm stretched mesh has a 50 mm bar. Sports nets are often quoted by the square mesh opening, which is the bar.

Panels panels

Twine From the twine specification

Twine Runnage m/kg

Metres per kilogram. From a tex value: 1,000,000 / tex. From a denier value: 9,000,000 / denier.

Knot & Selvedge Allowance %

Twine taken up in the knots, the selvedge meshes and cutting. From the net maker, or from weighing a known panel; knotless netting takes less.

Twine Mass per Panel

— kg

Grid length plus the knot allowance, divided by the runnage

Panel Count

Panel Area: — m²
Meshes in the Panel: — meshes
Meshes along the Length: — meshes
Meshes Deep: — meshes
Twine in the Grid: — m
Twine incl. Knots & Selvedge: — m
Net Mass per m²: — g/m²
Stretched Mesh: — mm
Twine for All Panels: — kg

The count assumes the meshes hang square, so each mesh opening is a square of the bar length and a grid of n x m meshes holds about 2 x n x m bars of twine. A net hung tighter or slacker (a different hanging ratio) covers a different area with the same meshes and the same twine; count the meshes the net is made with, then hang it. Runnage is the twine maker's figure for the finished twine, knots included in the allowance rather than in the runnage. Mesh count is rounded to whole meshes along and deep, which is how a net maker orders it. Knotless (raschel) netting has no knot take-up but its own selvedge loss; set the allowance from a weighed sample. **This counts twine; it does not rate the net for impact, UV life or ball stop.**

Knotted Net Twine Length, Mass & Mesh Count for a Panel — free, with the formula and a worked example, at Textile School.