The key technique on how to draw sandstone hinges on being able to replicate that soft gritty texture of the cut sandstone. In the step-by-step demonstration below, you will be shown how to this soft texture can be created.
The main technique used to create the soft texture is a variation of return stroke hatching. It can be applied relatively quickly thereby giving the artist momentum and opportunity to spontaneously adjust to any imperfections. Another advantage of this techniques is that can be extended to new areas with little to no visible differences.
To bring about a successful result, it is essential that good drawing materials are used at all times. A good quality of paper is a must. As a general recommendation the paper you use should be hard (if not very hard) with a light grain. Preferable mounted to prevent stretching and denting.
As you work through the slides below on drawing techniques you may come across a link to an associated footnote. You can either follow the links and return to the related slide, or read the footnotes at the bottom of the page after you have completed the demonstration.
To assist you with how to achieve the results demonstrated in these slides on drawing techniques, a selection of icons will appear in the upper left corner. To familiarize you with there meanings of each review the following list of icons.
|Flat Point Graphite|
|Rounded Point Pencil|
|Sharp Point Pencil|
We start by applying the first layer of return-stroke-hatching drawn with a sharp point HB grade pencil. Return-stroke-hatching (RSH) is drawn with a back and forth motion without lifting the pencil. This is should be sparsely spaced and the return ends must be randomly placed.
Next, the first layer of RSH must be extended. Here we can clearly see how easy it is to extend into those blank areas without any noticeable difference.
Keep the first layer at a common angle, and don't be too keen to fill in the spaces. This will come later!
With the first layer done it's time add a second layer of HB cross-hatching. This is done in much the same way, sparsely and randomly.
Once the second layer is completed, the lines for the joint are added. In this example the space to add the joints has been erased using an erasing-guide.
In this case the area been draw is comparatively small so erasing a space to add the joints is more practical. If the blocks or area been draw was much larger, an alternative method could be to draw each block independently.
Next the chamfered joints are adding. Firstly, the shadow edges of the chamfers must be determined and follow through. Here, these are shaded in with a B grade of graphite.
With all the joints complete done, you can easily see any imperfections in the sandstone that must be touched-up.
Besides the imperfections, you may need to darken the tone a little or add a shadow. Particularly if you are drawing two adjoining walls. One will most likely be a little darker. In that case add a third layer of cross-hatching at a different angle.
If you use a harder grade such as 2H it will soften the texture of the sandstone. Whereas a softer grade of graphite such as B will darken the tone, but will also make to look rougher. Here again, you could add a harder grade over that to soften the texture of the sandstone.