Pfaff 230-260 Manual - Page 18

Types of Fabrics Mercerized - CoHen Fine Fabrics -- 80 such as georgetle, chi1loi,boliste, to voile, own, silk. 100 Silk 0 to 000 twist Needle -Size 60 or 70 Lightweight Fabrics 70 such as dress silks md cottons, to sheer, woolens, shirlmg, dra- 80 A& B twist 80 peries. Medium Fabrics 50 such as madras, lightweight woolens, muslin, biocades, heavy to 70 B&C twist 90 - silks and royon, gabardine. 7Zec,%sIn?I:33 /'i?t? an $iz.c The appearance ot the finished seam is dependent on the correct refalionship belween needle, thread and fabric. Select the proper thread sizes and needles from this chart. The same size threads should be used in the needle and on the bobbin, Some experienced seamstresses prefer a somewhat thinner bobbin thread. How ever, the bobbin thread never should be thicker than the needle thread. Heavy Fabrics such os coating, denim, slipcover lobrics, bed corduroy, tickings, 40 to 50 C& 0 twist 100 lightweight canvas. Very Heavy Fabrics such as heavy Ockings. canvas, overcooting. sailcloth, up. holster y Synthetics, Rayon, Acetate including nylon. orion. dacron, plastics, etc. 24 to 40 90 E to twist 110 Deterinned by weiglil ol tobric 40 to 50 Deletmised by lhieod size 60 lo 80 16