Order online or contact us: 01483 565 800 sales@georgeweil.com
    • Total £0.00 Your Cart
To top

Sun Prints with Cyanotype Chemicals - Tried & Tested

The glorious sunshine has given me a chance to use the Fibrecrafts Cyanotype Blue Printing Kit. Include in the kit are enough chemicals to make up to 1 litre of solution, a 1/2 metre each of silk and cotton fabric, and a step-by-step instruction leaflet.

Cyanotype printing is a negative process - where light cannot reach the sensitised areas the colour does not develop. Items such as leaves, petals or feathers can be used as a mask, as can an acetate sheet with an image drawn on it in permanent ink, or large photographic negatives.

Cyanotype blueprint on cotton fabric

The chemical solution of the iron salts (ferric ammonium citrate and potassium ferricyanide) is sensitive to ultra violet (UV) light.

A substrate, such as paper or finely woven cotton or silk fabric, is coated with the solution and left to dry naturally in a dark room or cupboard. The dried coating turns to a greeny-yellow in colour. It will change colour to a greyish blue when exposed to direct sunlight or another UV light source.

When the print has fully exposed (times will vary depending on the intensity of UV light), the print is then rinsed in running water until the undeveloped chemical is removed. As the material dries, the print will oxidise and turn into the Prussian blue associated with the cyanotype blue printing process.

Cyanotype Print using Hand Drawn Stencil on Clear Acetate Film

The photograph below shows a print I made using an acetate sheet with a design drawn in black fibre-tip pen. To get a clear print it is necessary to keep the acetate sheet stencil as flat and close to the fabric as possible. Clear adhesive tape, the weight of a sheet of glass or empty picture frame can be used to help maintain contact with the surface. The less clear areas of my print (down the right hand side and bottom) are where my acetate sheet was slightly curled away from the fabric.

Cyanotype using acetate film

This print on silk fabric, below, was created using the same technique as above.

Cyanotype on silk fabric

A close-up shows a number of things to watch out for! The contrast of the print is not brilliant and this is where the lightweight silk fabric was exposed to the light for a short time before placing my stencil over it, hence the pale blue sun which should have remained white. Below the image of the sun is an area that has not developed and this is probably where I did not cover the fabric evenly with the solution, or it may be where it made contact with another surface while drying which leached the wet solution away from the silk.

Cyanotype Print using Negative Image on Inkjet Printable Acetate Film

These final images show a cyanotype image using inkjet printable acetate film. The film negative image was created from a positive image in Adobe Photoshop. Remember to print the image in black ink. I made the mistake of printing it in full colour which resulted in a semi-opaque stencil . This produced a subtle effect caused by some of the UV light being able to transmit through the masked areas. Printed acetate sheet sun print

I hope that my errors will help you to avoid making the same mistakes. The contents of the Fibrecrafts Cyanotype Blue Printing Kit provide you with enough chemicals to make 4 batches of 250ml - plenty for experimentation and a number of successful prints! ~ Allison Holland

Bookmark and Share
Leave a Reply

Sorry, you must be logged in to post a comment.

Ways you can save with George WeilSave with George Weil

Save while you shop. Look out for 'Buy More & Save!' offers - such as 15% off when you order 12 silk scarves - or visit Special Offers.

UK Delivery

UK DELIVERY HAS BEEN AFFECTED BY THE PANDEMIC please see our revised Terms & Conditions.

Overseas Delivery

We welcome orders from overseas customers. Please see our Terms & Conditions for further information.

George Weil Community

Join our Community! Find product information, project ideas and news in our Blog, view Safety Data Sheets, or link to our social media sites. Take a look...

Gift Cards

George Weil Gift Cards make great presents for creative people and can be redeemed against the value of any item found on this web site.

Encouraging Education

George Weil offers schools, colleges and professional craft tutors special discount terms when they buy art and craft supplies. Find out more...