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Mesh & LPI Chart

Mesh → LPI
Mesh count (threads/in)?
Typical uses:
    LPI → mesh
    Halftone LPI?
    The ÷4.5 to ÷5 rule is a widely used guideline, not a law. Thread diameter, emulsion, ink, press and printer skill all matter. Test on your own setup before a production run.
    Our film defaults
    Films printed at 1440 dpi on an Epson inkjet, elliptical dots, halftone angles 22.5° / 52.5° / 82.5° (one per screen in a multi-color job). Set these up with the Film Printer.

    Mesh count & halftone LPI reference

    MeshGuideline max LPI
    (mesh ÷ 5 – ÷ 4.5)
    Typical uses

    How the rule works: a halftone dot needs to sit on enough mesh threads to hold in the stencil. Dividing mesh count by 5 gives a conservative max LPI; dividing by 4.5 is the common rule of thumb. Going finer than the range risks dots falling through the mesh or washing out. To limit moiré, many printers also avoid an exact whole-number ratio between mesh and LPI and use angles like the ones above. Mesh counts here are US threads per inch; specialty inks (glitter, shimmer) need open mesh because the flakes must pass through, so check the ink maker's recommendation.

    What each box means

    New to screen printing? Here is what every box above asks for, where to find the number, and a typical example. Tap any next to a box to jump to its explanation.

    Mesh count (threads/in)
    How many threads per inch your screen fabric has. It is often printed on the frame or mesh label, for example 230. The tool shows which halftone sizes that mesh can usually hold.
    Halftone LPI
    LPI means "lines per inch". It tells how close together the tiny dots in a halftone are. A halftone is a picture made of dots, like in a newspaper photo, to show shading. Your art or film software shows it. 55 is a common choice.