BIG Etching Ground 120ML Black

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Note:  120ml containers are now in tins and no longer available in tubes.

Safer Alternative Etching Ground

There are many alternatives to the traditional etching ground on the market, many of which advertise themselves as the safer alternative. This may be the case but from my experience this is often to the detriment of quality and practicality. This common problem has put many printmakers off from trying alternatives, preferring to stay with the reliable time honored system. Did you know that a traditional etching ground contains arsenic, lead, mercury to name but a few toxic elements which can not only be breathed in through your air ways but also absorbed through your skin. With ‘Big’ I feel I have not only provided a non toxic alternative but also a ground which is far more versatile. Because the main constituent is an ink it allows the artist printmaker to experiment with many different effects on their etching plate. Techniques ranging from soft and hard ground, photo etching, marbling, relief etching, sandpaper aquatints and coffee lift are but a few which can be explored. Big has been used at the School of Art University of Aberystwyth since 2002 and has been adopted in many other private and educational print workshops around the world. Trefeglwys Printmakers provides courses covering all the techniques which can be achieved with ‘Big’. If you would like to know more about this exciting ground or would like to try some out you can contact me through my email or just give us a ring.

Andrew Baldwin
Trefeglwys Print Studio
Mid Wales UK


A step by step guide to using BIG Etching Ground
  1. Bevel the edge of the plate, not only for conventional reasons but also to preserve your roller.
  2. Degrease the plate (using either soy sauce or salt vinegar water mix and a little whiting as this is a healthier option) making sure all deposits of whiting are removed from both sides of the plate when drying it. (Don't dry with a hair dryer as some water systems have quite a lot of chlorine, which can be left on the surface of the plate, use newsprint or equivalent). Thorough degreasing is very important in order that BIG adheres to the plate.
  3. The secret to a successful application of the BIG ground is to roll the plate up evenly and not too heavily. Squeeze a small amount of the ground onto a glass pallet. Spread it out with a pallet knife and roll it up (a good quality brayer or roller helps). Pass the loaded roller over the plate in a fairly vigorous fashion. At first the plate will take on a sort of eggshell appearance. Occasionally spin the roller to give an even coverage of ground. *
  4. At this stage you can treat the ground in the same way as you would a soft ground. ** If however you wish to create a hard ground you must now bake the plate. (The ideal method is to do this in an oven, but a hot plate will do. It is also possible to use a cardboard box with a round hole cut out of the top to which a hairdryer can be inserted, blowing hot air onto the plate. This latter process is a simple one but can take a little longer to bake the plate. The timing for baking will be dependent on the size of your box and the strength of the hairdryer.) With each of these methods it is important to keep the dust levels low. It is equally important that the temperature and the length of baking time are correct relative to each other, as although the ground would perform well at the initial stages, problems may arise when removing the ground if the temperature has been set too high for too long. As a benchmark,(see below for updated instructions to the new big) a temperature of 275F (135C) for 6mins works well, but of course you can increase the temperature and reduce the time slightly if you wish. Just be aware that too high a temperature will burn the ground. This will be indicated when smoke rises from the plate and the color of the ground changes. To assess whether the plate is dry or not, first let the plate cool down, as while the plate is still hot the ground remains tacky.
  5. You should now have a perfect working ground. Unlike traditional grounds BIG will retain its quality indefintely and will not dry out. It is also possible to draw preliminary sketches on the surface of the ground using a soft pencil; I personally use a litho pencil No. 1. If you accidentally scratch the plate you can use a permanent marker pen to cover the marks, or alternatively, apply BIG stopout. It is important to allow the ground to cure for at least half an hour after cooling before you bite the plate. Ferric should be between 33 and 38 Baume.
  6. To remove the ground, simply give it a quick polish with Brasso, or place the plate in a dish of hot water (hotter the better) sprinkle washing powder over the plate and leave for approximately 10min. You could also use a non toxic stripper. Remember, if removing the ground proves difficult you have probably baked the plate for too long. The ground can also be removed with any washing powder and hot water if the plate was backed several days earlier.

*If at stage three you are covering an earlier etched plate, roll the plate up with a little more ground than you would for a bare unetched plate. Then with your finger work the ground down into the etched lines. When you are happy that this has been achieved you can then strip back some of the ground with a dry roller.

**If you want to use BIG as a soft ground to create impressions of leaves, feathers etc., tape a sheet of screen printing mesh larger than your plate to the bed of your press. After coating the plate with wet ground register the plate under the mesh and run it through the press (two etching blankets are usually sufficient). A small amount of ground will be removed onto the mesh. Re apply the ground to the plate, place items on top and run through the press making sure you have placed the plate in the same position with the mesh dropped on top. Then, by baking the plate you can combine soft and hard ground techniques, if you wish, on the same ground.

For more information on BIG's versatility you can contact Andrew via For film demonstrations on the technique used with the ground, go to my web site:

Updated instructions for the NEW B.I.G.

For the last 20 years BIG has proven to be a safer and more versatile etching ground used by many thousands of printmakers. But I'm proud to announce that BIG is now even safer. In order that I could produce the quality of ground I was looking for it was nec essary to add 4% mineral solvent to the original formula. Although this is a fairly insignificant proportion to the thotal volume, for some time I have been looking for ways to remove that last 4%. I am pleased to say this has beeen achieved and BIG now contains no Mineral solvents thus eradicating even the smallest amount of V.O.C. The new BIG can be recognised by the new label which incorporates a lavender branch. This new version of BIG behaves just as well as the original with all the same characteristics. However there is one change. It is now necessary to increase the curing temperature to 180C / 356F. To obtain a hard ground. Alternatively you can keep the original temperature and increase the time to 8 minutes. If you have any questions please get in touch


Extra Information

Baldwin's Ink Ground
Fully Opaque