Pfaff 93 Owner's Manual - Page 13

Types of Fabrics Mercerized Cotton Silk Needle Size ?&cmusn /Vet! an? '7ha $tzc Fine Fabrics 80 such as georgette, chiffon, batiste, to voile, lawn, silk. 100 0 to 000 twist 60 or 70 Lightweight Fabrics 70 such as dress silks and cottons, to A& B 80 sheer woolens, shirting, draW 80 twist peries. Medium Fabrics 50 such as lightweight woolens, to madras, muslin, brocades, heavy 70 B&C twist 90 silks and rayon, gabardine. Heavy Fabrics such as coating, denim, corduroy, slipcover fabrics, bed tickings, 40 to 50 C& D 100 j5t lightweight canvas. The appearance of the finished seam is dependent on the correct relationship between 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. Same experienced seamstresses prefer a somewhat thinner bobbin thread. However, the bobbin thread never should be thicker than the needle thread. For embroidery and darning work, a No. 50 thread should normally be used. Synthetics, Rayon, Acetate including nylon, orIon, dacron, plastics, etc. Determined by weight of fabric 40 to 50 Determined bythreadsiz 60 to 80 14