Chris Collins

Areas / Making

Glass and textiles

Glasswork, sewing, and soft goods.

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Embroidery file viewer and converter

Open a machine embroidery file (DST, PES, PEC, JEF, EXP, VP3, XXX) and see it stitched — stitch count, colours, trims, jumps, size, whether it fits your hoop, thread per colour and sewing time, a stitch-by-stitch replay — then recolour, rotate, mirror, scale or split long stitches and save it as DST, PES, JEF or EXP.

Glass and textiles

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Stained glass and mosaic pattern maker

Turn a photo into a stained-glass pattern whose pieces you can actually cut — a minimum size and width, no deep inside curves or holes — with smooth lead or foil lines, numbered pieces and a colour key, glass area per colour with waste, came and foil lengths, an editor to merge, split, move and recolour pieces, and a real-size cartoon plus a pattern copy drawn at the pattern-shear width; or into a mosaic of square tesserae (grid, brick or following the edges) in your own tile colours, with counts and a printable map.

Glass and textilesMaking

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Vinyl cutter helper

Text in a Google Font or an SVG, ready for a vinyl cutter — weeding box and weeding lines, a contour outline for stickers, mirroring for HTV, a layer per colour with registration marks, drag-knife blade offset with corner swivels and overcut, tiling across the roll — exported as SVG or HPGL, or sent straight to a USB-serial cutter.

MakingGlass and textiles

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Glaze chemistry calculator

Glaze recipe ↔ unity molecular (Seger) formula with a cited materials database — Si:Al, flux balance, the Stull chart, Appen thermal expansion for crazing checks, cone 6 and cone 10 limit formulas, a target formula solved back into a recipe, batches, and line and triaxial blends.

MakingGlass and textiles

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Kiln and firing calculator

Orton cone chart at 15, 60 and 150 °C per hour; a firing-schedule builder with a graph, total time, cone reached and energy cost; clay shrinkage and absorption with size-to-make; plaster and water for moulds; and slip specific gravity, water to add and deflocculant.

MakingGlass and textiles

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Sewing, knitting and crochet calculator

How much fabric — pattern pieces packed on the fabric width (folded or single, nap, seam allowance) — plus quick estimates for skirts, curtains and cushions, bias and binding, knitting and crochet gauge and resizing, CYC yarn weights and yarn quantities, increasing or decreasing evenly across a row, and grading measurements between sizes.

Glass and textiles