Copying Details

Impressions of carvings, mouldings, etc. are taken with artist's modelling-wax, hot paraffin-wax or dental quality plaster of Paris obtainable at most pharmacies. Plaster will give the cleanest impression providing there is no undercutting and the original is heavily waxed to facilitate release. From this first impression a mould can be struck, again with plaster of Paris, which can be used as a pattern for metal casting. More permanent moulds can be formed with resin-impregnated glass fibre (see also p. 00) and for small work with intricate detail Araldite epoxy cement with or without reinforcement.

Details of flat relief carvings, frets, etc. can be obtained by laying a sheet of paper on the carving and rubbing over with heelball or soft-lead pencil. Inlays and marquetry-work can also be rubbed in this way, for there is usually sufficient proudness or recession of the individual pieces to give a reasonable impression which can be sketched in more firmly.

IOft6in |9ft3in

329 Site measurements and templates

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