{"id":5640,"date":"2015-12-07T10:15:52","date_gmt":"2015-12-07T15:15:52","guid":{"rendered":"http:\/\/www.thomasparkerhudson.com\/wordpress\/?p=5640"},"modified":"2015-12-07T10:15:52","modified_gmt":"2015-12-07T15:15:52","slug":"about-mastic-based-mediums","status":"publish","type":"post","link":"https:\/\/thomasparkerhudson.com\/wordpress\/2015\/12\/about-mastic-based-mediums\/","title":{"rendered":"About mastic-based mediums"},"content":{"rendered":"

Recently, I wrote about my experience with maroger<\/a>–a mastic-based medium. Maroger was my standard medium for a period, although I haven’t used it in a number of years. I stopped using it because details are difficult and, because it is such a soft resin, paintings are prone to scratch or show other surface insults. My mastic-based paintings have not cracked or shown other issues sometimes reported about mastic, but the surface delicacy is reason enough to abandon it.  I prefer my current copal-based medium in every way.<\/p>\n

But I am writing this due to another recently discovered issue with mastic.<\/p>\n

Read more<\/span>Cleveland Museum of Art Opens Renovations<\/span><\/a><\/div>

I have an old mastic-based painting that I need to repair. I haven’t used mastic mediums for 15 years, so the painting is 15-20 years old. It isn’t cracked or torn, but the surface has several obvious scratches. It’s a huge painting, 6′ x 8,’ and two of its stretcher strips snapped. This happened unbeknownst to me several years after the painting was finished. The heavy duty stretchers are from Utrecht and both snapped at joins. I will never buy another stretcher from Utrecht. Anyway, when the stretchers snapped, it stressed the painting in an unnatural way which resulted in several scratches. Because the canvas isn’t torn or punctured, and because it is very painterly and details are handled broadly, it should be easy to fix.<\/p>\n

Not the case.<\/p>\n

Read more<\/span>In the Studio Oct. 14 2012<\/span><\/a><\/div>

My usual routine when I take up an unfinished painting, is to lightly wipe the surface with denatured alcohol. This prevents new paint layers from beading. With my copal-based medium, I can wipe a 2-day old canvas without affecting the surface. My medium drys quickly and copal is super hard.<\/p>\n

When I wiped the surface of this 15-year old mastic-based painting with denatured alcohol, I lifted paint off the surface!<\/strong> Not a lot, but even so! My mastic-based medium is still not 100% dry, even after all these years. Needless to say, even if I preferred mastic over copal for aesthetic reasons, I will never use mastic again.<\/p>\n

Read more<\/span>Smooth Move—Smooth Painting Surfaces<\/span><\/a><\/div>

After I clean and repair the painting, I will seal it with copal varnish.<\/p>\n

 <\/p>\n

Read more<\/span>In the Studio—10\/28\/12<\/span><\/a><\/div>

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Recently, I wrote about my experience with maroger–a mastic-based medium. Maroger was my standard medium for a period, although I haven’t used it in a number of years. I stopped using it because details are difficult and, because it is such a soft resin, paintings are prone to scratch or show other surface insults. My […]<\/p>\n","protected":false},"author":61,"featured_media":5585,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[139,208,6,24,1],"tags":[293,153,195,154,294],"class_list":["post-5640","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bio","category-materials","category-paintings","category-shop_talk","category-uncategorized","tag-cleaning-paintings","tag-copal","tag-denatured-alcohol","tag-mastic","tag-old-paintings"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/2015\/10\/studio-aa.jpg?fit=600%2C434&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":5396,"url":"https:\/\/thomasparkerhudson.com\/wordpress\/2015\/10\/old-painting-medium-revisited\/","url_meta":{"origin":5640,"position":0},"title":"Old painting medium revisited","author":"Tom Hudson","date":"October 8, 2015","format":false,"excerpt":"I've written before about my oil medium. I wasn't exaggerating\u00a0when I wrote that my medium, one I've used for years, is the result of many, many trials. \u00a0I haven't used every possible medium, of course, but I've tried a lot of them. No one can try all possible combinations. \u00a0Recently,\u2026","rel":"","context":"In "Bio"","block_context":{"text":"Bio","link":"https:\/\/thomasparkerhudson.com\/wordpress\/category\/bio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/ngg_featured\/nude.jpg?fit=800%2C595&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/ngg_featured\/nude.jpg?fit=800%2C595&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/ngg_featured\/nude.jpg?fit=800%2C595&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/ngg_featured\/nude.jpg?fit=800%2C595&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":13620,"url":"https:\/\/thomasparkerhudson.com\/wordpress\/2024\/08\/delicious-copal-jelly\/","url_meta":{"origin":5640,"position":1},"title":"Delicious copal jelly","author":"Tom Hudson","date":"August 15, 2024","format":false,"excerpt":"I haven't been a fan of gelling paint mediums since my early interest in maroger, a gelling medium made from mastic. But I like to experiment with mediums, sometimes to my harm. My go-to for paint varnishes and related materials is James Groves. I've praised nearly every product from James\u2026","rel":"","context":"In "materials"","block_context":{"text":"materials","link":"https:\/\/thomasparkerhudson.com\/wordpress\/category\/materials\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/2024\/08\/jelly1.jpg?fit=400%2C454&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2015,"url":"https:\/\/thomasparkerhudson.com\/wordpress\/2013\/05\/two-paintings-of-the-same-subject\/","url_meta":{"origin":5640,"position":2},"title":"Two Paintings of the Same Subject","author":"Tom Hudson","date":"May 27, 2013","format":false,"excerpt":"I recently completed two paintings of the same--exact same--subject. These self-portraits were started at roughly the same time and both recently finished. Why two paintings on the same subject? Technical reasons! No, really. I wanted to compare two mediums and determined the best ways was to test them on the\u2026","rel":"","context":"In "Bio"","block_context":{"text":"Bio","link":"https:\/\/thomasparkerhudson.com\/wordpress\/category\/bio\/"},"img":{"alt_text":"Two paintings of the same subject (self-portrait)","src":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/2013\/05\/tom-double.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2569,"url":"https:\/\/thomasparkerhudson.com\/wordpress\/2013\/09\/in-the-studio-9222013\/","url_meta":{"origin":5640,"position":3},"title":"In the Studio 9\/22\/2013","author":"Tom Hudson","date":"September 23, 2013","format":false,"excerpt":"More recent work. The church is from a drawing I made in Colorado. I am using a mastic-based medium in this painting. In the past I used a jelly-type medium (Maroger), but stopped long ago. This medium isn't jelly-like in the least even though it uses mastic. It's an OK\u2026","rel":"","context":"In "Bio"","block_context":{"text":"Bio","link":"https:\/\/thomasparkerhudson.com\/wordpress\/category\/bio\/"},"img":{"alt_text":"On the easel 9\/22\/2013","src":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/2013\/09\/studio-9-22-13.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5293,"url":"https:\/\/thomasparkerhudson.com\/wordpress\/2015\/08\/in-the-studio-8215\/","url_meta":{"origin":5640,"position":4},"title":"In the studio 8\/2\/15","author":"Tom Hudson","date":"August 2, 2015","format":false,"excerpt":"Three Women is coming along slowly. Previously, I titled it VW Bug and later Three Young Women. Now it's just Three Women--original, I know. For the past week I've been absorbed by technical issues. Not mediums, but supports and grounds. I spend a lot of time getting paintings to the\u2026","rel":"","context":"In "Paintings"","block_context":{"text":"Paintings","link":"https:\/\/thomasparkerhudson.com\/wordpress\/category\/paintings\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/2015\/08\/studio-2015-8-2.jpg?fit=500%2C404&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":4983,"url":"https:\/\/thomasparkerhudson.com\/wordpress\/2015\/04\/in-the-studio-41215\/","url_meta":{"origin":5640,"position":5},"title":"In the studio 4\/12\/15","author":"Tom Hudson","date":"April 12, 2015","format":false,"excerpt":"I had another painting session with Graduation Day this morning, primarily on the pig-tailed girl. I spent a lot of time on her hands and the key chain she's holding. I'm starting to like the pig tail. Most of the background is done in this painting--the sky, cars, buildings, and\u2026","rel":"","context":"In "materials"","block_context":{"text":"materials","link":"https:\/\/thomasparkerhudson.com\/wordpress\/category\/materials\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/thomasparkerhudson.com\/wordpress\/wp-content\/uploads\/2015\/04\/studio-2015-4-12.jpg?fit=512%2C480&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_shortlink":"https:\/\/wp.me\/p2Gw6F-1sY","_links":{"self":[{"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/posts\/5640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/users\/61"}],"replies":[{"embeddable":true,"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/comments?post=5640"}],"version-history":[{"count":0,"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/posts\/5640\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/media\/5585"}],"wp:attachment":[{"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/media?parent=5640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/categories?post=5640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thomasparkerhudson.com\/wordpress\/wp-json\/wp\/v2\/tags?post=5640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}