Silverwork and jewelery; a text-book for students and workers in metal, by H. Wilson (1903)
Wilson, H · New York, D. Appleton and company · leaf 50
gh the hole. The rough tube whichresults from this operation is annealed anddrawn through the next smaller hole, andso on until the desired size is attained. The student will find this very usefulin the preparation of tubing required forhinges of brooches, lockets, boxes, andcaskets. If the tube is… … jpousse Fig. 5. 43 Wire- .. make his own draw-plate out of an oldDrawirving flat file, first softening it, then punchinggraduated holes with a taper punch of therequired section filed up out of bar steeland properly hardened. The taper mustbe very slight or the edge of the hole willbe too sharp,…
Silverwork · Jewelry
Internet Archive · New York Public Library · Public Domain Mark 1.0. Free to use for anything.
