What to do if the canvas cracks? How to repair the broken canvas

Use beeswax and resin to glue and cloth with pigment cracks.

Method: See if you still want to keep the painting, if yes, you can paste it on the back of the painting, and then re-nail the canvas with the same size as the painting.

If the canvas is cracked due to improper protection, the small tear can be aligned and glued on the reverse side, and the large tear can be fixed with paper tape in front of the picture and then patched on the reverse side, and it is best to use beeswax and resin to glue the cloth and paint crack.

The above is just a simple way to deal with, for the more expensive oil paintings can not do this, to send to the professional oil painting restoration, oil painting restoration is a highly technical industry and in China has not been in the beginning, so the restoration cost of a painting will be relatively high.

Tinkering with paint? Yes or no.

Oil canvas broken repair method:

After cleaning the cracks with turpentine, lay the picture flat, padding a wooden board with a certain hardness on the back of the cracks, and then gently knock it with a small hammer at the front cracks to flatten the prominent corners, and then apply high-quality transparent latex to the cracks, and add color to the obvious cracks, and glaze them after drying.

For uneven pictures caused by extrusion and impact, in the absence of cracks, spray some water on the canvas on the back, and dry it in a ventilated place as soon as possible after the picture is flat.

Canvas bandage steps:

1. Align the warp and weft lines of the canvas with the four sides of the inner frame, otherwise the crooked cloth will affect the texture and beauty of the picture (the size of the canvas should generally be 4 5cm larger than the inner frame), and then cut the canvas down.

2. Use a few nails or pushpins to temporarily fix the canvas at the four corners of the inner frame to keep it parallel to the inner frame, and the purpose is also to keep it in the bandage without skewing.

3. Draw a straight line on the canvas along the outer corners of the four sides of the inner frame with charcoal, which can help you grasp the proportion when stretching later, and you can also maintain the consistency of force.

4. When nailing the canvas nails, you should start from the outer center of the long side of the inner frame, and then nail the second one on the corresponding other side, and then nail the two short sides in the same way. At this point, the canvas ** forms a diamond-shaped fold, which then crosses in the order of the four sides.

5. When nailing, the canvas should be tightened evenly, and the spacing of the nails depends on the size of the picture, usually 4 to 6cm, which is about the width of a canvas pliers, and should be evenly distributed.

The above content reference: Encyclopedia - Oil on canvas.

For uneven pictures caused by extrusion and impact, in the absence of cracks, spray some water on the canvas on the back, and dry it in a ventilated place as soon as possible after the picture is flat.

It is difficult to repair the cracked picture, and there are professional maintenance personnel and more advanced technology abroad. The simple method is: clean the cracks with turpentine, lay the picture flat, padding a wooden board with a certain hardness on the back of the cracks, and then gently knock with a small hammer at the front cracks to flatten the prominent corners, and then apply high-quality transparent latex to the cracks, and add color to the obvious cracks, and glaze them after drying.

This method is limited to flat pictures without brushstrokes, and textured pictures can only be glued, varnished or supplemented with color after cleaning. Where the color blocks fall off, it is necessary to mix latex with large white powder (or lithopon) into a paste as a filling material. After filling, you can fill it with color.

The method of repairing the crack caused by the collision is to apply latex to the back of the tear, cut a slightly larger piece of linen and paste it, and with the help of a knife, the tear is leveled and aligned, and the picture is placed flat on the flat table with the picture facing down. Iron with an electric iron on the lined linen, taking care not to allow the latex through the gaps to stick to the tabletop.

After leveling, let it dry, and then fill the damaged area with paint, if the damage is very obvious, you need to fill it with filler material and then color.

Cracks on the surface of oil paintings are a very common state of damage, and there are several situations:

1. Cracks in the varnish layer, reason: using a hard resin solution as the varnish (amber oil), after a long time (dozens to hundreds of years), there will be cracks, and the color will become very dark, the treatment method is to carefully clean off the varnish layer with a safe solvent, and re-paint the surface with soft resin varnish (dama varnish), and at the same time restore the brightness and purity of the color of the picture. Sometimes the soft resin varnish coating is too thick, and the treatment method is the same as above.

There are also people who use hot-pressed linseed oil or varnish as varnish for the sake of aging, which will soon turn yellow and dark, and cracks will appear.

2. Cracks in the color layer, causes: improper painting techniques, not strictly following the principle of fat cover and thin painting, the lower layer of oil is large, and the upper layer of pigment is mixed with turpentine, which sometimes causes the pigment to crack and peel off. It may also be due to improper materials, such as someone using asphalt instead of black paint to paint, and after a long time, the asphalt will flow downward, crack, and crack.

In addition, if the egg tambera technique is applied to oil painting, the color layers will be improperly connected, and it will also crack.

Some people have repaired the ancient paintings with cracks in the color layer in the early days, filling the pigment in the cracks, but the pigment will quickly darken within a year, making the picture effect worse, and producing new stress on the pigment at the cracks, resulting in aggravated damage to the painting. So if this is the case with your painting, don't touch it, learn the lesson, and pay more attention to the technique in the future.

3. Cracks in the bottom layer, causes: improper production of the base, too much powder content in the bottom material, too thick bottom layer, the painting in the preservation process, with the change of temperature and humidity, constantly deformation, the cracking of the bottom layer is inevitable, in addition, the external force is also one of the reasons, such as bumps.

If the crack is on the bottom layer, it can still be repaired, although the professional method is effective, but it is very cumbersome and difficult, not suitable for personal operation, it is recommended that if it is your own painting has a crack in the bottom layer, see if it is accompanied by the deformation of the layout of the painting, look at the back is more obvious, if it is flat, leave it alone, if there is a protrusion, use a humid hot towel, slowly wipe the back of the place, not too wet, place it for a while, the deformation can be improved, repeated operation several times, you can eliminate the deformation, Cracks in the front will become inconspicuous or even completely invisible.

In general, the main cause of crack damage is caused by improper production techniques, and it is necessary to correct your painting habits in time to prevent problems before they occur.

It's a little completely cracked... Unless you ask a professional, or you really haven't done it, look at those ancient paintings, they are basically cracked, and you can't see how they have been repaired.

There are two reasons for the crack: one is that the canvas is scraped too much when the base is made. Second, the oil painting is too old, and the pigment loses its toughness.

If it is the first reason, it is recommended to buy a linen with a coarser density, after stretching the frame, the first time, use white latex + water 4 6 ratio Stir well Scrape on the canvas and wait for it to dry, the second time Use white latex + lithop powder + water 4 2 4 Ratio Stir evenly Scrape on the canvas and wait for it to dry. The third pass uses white latex + water.

5 to 5 Mix well and scrape onto the canvas. If the gap in the cloth mesh has been filled at this time (see if the cloth mesh is filled, you can look at the picture frame to the sun, if you can see the bright spots, it means that there is still a gap, then repeat the second time 1 time + the third time 1 time) then you can use the base color paint for the bottom, before doing the bottom can be sandpaper to polish the canvas surface of the frame, if you want to use a white bottom, it is recommended to use the finished base material (horsepower or other brands), if you want to use other colors of the bottom, you can directly use acrylic or directly oil paint.

When squeegeeing, be careful not to use a brush to apply, and try to use a flat plate to scrape the glue into the cloth.

If there is anything you don't understand, just q me.

Hehe, it's too complicated, I don't give points, I don't have the motivation to type for you, it's mainly a matter of the drawing steps.

What is the point, selflessly help those in need.

1. Be thin at the beginning.

2. Oil painting is thicker than ever.

3. Try not to use or use less oil when you start painting.

There are many kinds of problems and so on.

Oil paintings should not be placed in direct sunlight, but in a ventilated place, generally indoors, balcony (but not sun) temperature is fine.

It may not be comprehensive but it's almost, I hope it helps.

Let's be honest! It's a complicated question! I probably looked at other people's, I think it's better not to use latex, I personally think it will definitely crack, the length of time is a problem. But as soon as I started painting, it cracked, and it was really cuppy.

I think there's a reason: the finished linen you use, after the frame is stretched, it still needs to be bottomed. Did you wipe alcohol before you got on it?! If you don't wipe it, cracks will appear quickly.

There is another reason, maybe when you do the bottom, the environment is too dirty......But if it's too dirty, it will take 60 or 70 years to fall down. Unless, it's really dirty, it's dirty. Hehe! Joke!

It is recommended to use the finished base material, in the community opposite CAFA, 4L a barrel, and the price of acquaintances is 160I'm not advertising, we use this all the time. How to do it specifically, in fact, is very simple, it is cumbersome, more detailed, if you want to understand, you have time to m me!

How to deal with the cracks, let's draw it again, ask my friend another day, she specializes in this.

As for when the oil painting will crack, in a few decades, it is really not a question for you to be troubled, let the person who bought the painting be troubled. The oil painting is not cracked, and the people who repair the painting are not all unemployed.