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Stop-Out Varnish: Turpentine and Resin with Lampblack (Spon's Workshop Receipts)
The etcher's stopping-out varnish from Spon's Workshop Receipts: resin dissolved in spirits of turpentine in a warm water bath, coloured with a little lampblack, and brushed over the parts of the plate that must not bite further.
Spon rates it better than Brunswick black; it sets hard overnight and can be thinned again with turpentine.
Source: E. Spon, Workshop Receipts (first series), pp. 155-156. Picture: the book's text.
Beginner
Overnight to set
Instructions
1
1
Dissolve the resin
Dissolve the resin
Break small pieces of resin into a phial and pour spirits of turpentine over to about twice the height of the resin. Stand the bottle in a small saucepan of water kept hot on the hob, with a cork laid lightly in its mouth, and shake it now and then.
Materials for this step:
Pine Resin1 small pieces
Turpentine1 to twice the height of the resinTools needed:
Glass Bottle (Clear)
Saucepan
Water2
2
Colour with lampblack
Colour with lampblack
Pour a small portion into a small pot, add a little lampblack to give it colour, and work it well together with the camel-hair pencil so there are no lumps.
Materials for this step:
Lampblack1 a littleTools needed:
Fine Brushes3
3
Apply and set
Apply and set
Brush it over the parts to be stopped out, or over the margin of the plate; left a night it sets hard. It is dry when a finger can be laid on it without sticking. Thin it again with a little turpentine.
Tools needed:
Fine Brushes
TurpentineMaterials
3- 1 small piecesPlaceholder
- 1 to twice the height of the resinPlaceholder
- 1 a littlePlaceholder
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