Stop-out varnish asphaltum

Black asphaltum ground to cover parts of the metal to protect them from being etched in the acid bath.
Size 
from
€ 15,56
€ 40,62 per 1 l
incl. 19% VAT , plus shipping costs
  • Available immediately
Description

Asphaltum Varnish

Black Bitumen Cover Varnish to protect covered parts from being etched.
Stop-out Varnish prevents covered parts to be etched in the acid or in ferric chloride solution and other mordants.

Suitable for:
  • printmaking - cover and protect the back of copper, brass and zinc plates and for making aquatinta
  • electronics - prepare pcbs for etching and retouch defects in the photopolymer resist with stop-out varnish
  • modelmaking - etching of metal plates
  • Jewellery - structurize gems, bracelets and rings with ornaments
  • blacksmith - paint marks on knive and sword blades prior to etching or electro-etching.

Ingredients:

bitumen, rosin and turpentine.


Application:

Use a soft brush to cover the areas You want to protect. Methylated spirits or paint thinner may be added to make the stop ground more fluent.
Can also be used as a hard ground for subsequent work with the etching needle.

Drying:

Before the plate is submerged in the mordant, let it dry for at least one hour. Heat and air ventilation speeds up the drying process.

Removal:

To strip the varnish after etching, use a solvent like acetone or turpentine.
Alternatively the MungoLux Cleaner can be used. It is solvent-free and based on modified vegetable oils.

Use in well ventilated room only.
Other names: Strawhat Varnish

Shipping weight: 0,35 kg
Content: 0,25 l