33 votes

What are good ways to spray paint a QR code on a footpath?

Here's a QR Code Stencil Generator which automatically generates thin bridges between islands. As mentioned by @Aloisdg : It is a Processing project and it is hosted on GitHub. I tested it ...
Eric Duminil's user avatar
26 votes
Accepted

What are good ways to spray paint a QR code on a footpath?

One approach to avoid the "island" problem could be to split the pattern into two stencils. In each stencil only the holes of every other row are cut out. First colour is applied to one of the ...
samcarter_prepared_for_xmas's user avatar
23 votes
Accepted

How can I make a sketch under a watercolour painting and have it not be seen?

Watercolor is, by its very nature, a transparent medium and so it becomes really quite difficult to manage this. However, there are a couple of things you can do to help: Draw very lightly and then ...
Joanne C's user avatar
  • 3,423
14 votes
Accepted

What does it mean to "push your values"?

If there isn't enough separation in the levels of the values used in rendering an image then the image can look washed out or the shapes poorly defined. Someone saying, you need to "push the values", ...
John Vukelic's user avatar
  • 2,946
14 votes

Intentionally letting watercolor paints dry before using them?

Many people do this, it is common practice among watercolorists. Watercolor paints can be used in their wet form via a tube or they can be used as a dried over consistency. It has nothing to do with ...
Debra Petersen's user avatar
13 votes
Accepted

Intentionally letting watercolor paints dry before using them?

It sounds like your wife learned to paint with watercolor paints in pans, and/or learned from someone who only really knew of these types of paints: These are in a sense the ancestors of the kiddie ...
Martha's user avatar
  • 1,818
13 votes

Are there any downsides when painting with a cyan-magenta-yellow palette instead of the traditional yellow-blue and-red?

Cyan, magenta and yellow are actually the primary colors you should use when painting with inks and paints. (I'm surprised we didn't have this kind of question asked before, because most of us are ...
Elmy's user avatar
  • 13.1k
13 votes
Accepted

Why did they make shadows with stripes?

If you follow the link from the Wikipedia page, you get to the portrait's page at the National Portrait Gallery. That tells you it's a woodcut. It's probably wrong (see Joachim's answer, and the piece ...
Chris H's user avatar
  • 6,799
13 votes

Paint that will feel like tire rubber

A product by the brand name PlastiDip™ exists in spray-on and brush on or dip form. It's somewhat rubbery and is often used as grips for tool handles. Available at the Amazon link in various colors ...
fred_dot_u's user avatar
  • 7,454
12 votes
Accepted

How do you fade one color to another with oil paint without getting the mixed color?

There are green areas in the photo, although they are not bold. Maybe your solution would be not to fade but to juxtapose bold colors. Yet, if you want to fade, painting by layers will have a cleaner ...
Reed -SE is a Fish on Dry Land's user avatar
12 votes
Accepted

What are the little pieces of wood that come with pre-made canvas for?

These are called "canvas keys". The are shimmed into the corners of the canvas to maintain the tautness of the canvas. This generally happens only on machine-assembled frames, or on mass-produced ...
New Alexandria's user avatar
12 votes

What are good ways to spray paint a QR code on a footpath?

What about a custom 3D printed embossing roller?
Danielillo's user avatar
12 votes
Accepted

Bob Ross - Ebony Sunset - Did he use a dry black base coat?

Bob Ross usually starts his paintings with a completely dried base coat. He starts this particular episode explaining that he already prepared a coat of alizarin crimson, but that should make the ...
Elmy's user avatar
  • 13.1k
11 votes

What is this liquid called in my India ink?

India ink has only three ingredients: lampblack, water and gelatin or shellac as a binder(in fact, traditional India ink doesn't even contain this), with shellac being much more common. As you've ...
walrus's user avatar
  • 2,325
11 votes

What are good ways to spray paint a QR code on a footpath?

Instead of spraypaint - consider a "pavement sticker" or "footpath decal" that looks something like these. A brighter background colour will help it stand out much more than paint on a dingy ...
Criggie's user avatar
  • 336
10 votes
Accepted

How to paint the background of a portrait painting?

The paint does make a difference in whether or not you can easily paint over the background. Watercolor, for example, does not easily cover other art and you would need to use a different technique ...
leigero's user avatar
  • 1,102
10 votes
Accepted

What is the difference between linen and cotton canvas?

From Understanding the difference canvas and linen: Canvas can mean different things to different people. In the context of painting, the word ‘canvas’ means a fabric used as a painting surface. ...
Ken Graham's user avatar
10 votes
Accepted

How to overcome the fear of imperfection?

There's a famous story about a ceramics professor who separated his class into two groups of students. The students in Group A were graded solely on a single pot they presented at the end of the ...
user812786's user avatar
  • 2,375
10 votes

How to hang a painting on plywood on the wall?

If you have some power tools, you can make a very thin French cleat. The image below shows one designed to hold a heavy cabinet. The two mating pieces are cut at an angle, typically 45°, and the ...
fixer1234's user avatar
  • 11.5k
9 votes

What are good ways to spray paint a QR code on a footpath?

How about buying some grid-shaped welded wire metal mesh (commonly used for rabbit or chicken hutches), and using sticky tape to cover the squares you want to mask? The wires would be thin enough ...
Robin Bennett's user avatar
9 votes
Accepted

How do I replicate this misty spray paint texture/pattern?

If the material is metal, one can use a wrinkle finish powdercoat to accomplish this result. It's not quite exactly the same texture, but wrinkle finish powdercoat may qualify in that it's random and ...
fred_dot_u's user avatar
  • 7,454
8 votes

How to paint the background of a portrait painting?

You could try applying a frisket to the bird and flowers first (to isolate and protect your lighter more detailed areas) before beginning painting your background. Once your background color/colors ...
Artsynesse's user avatar
8 votes

How can I make a sketch under a watercolour painting and have it not be seen?

It would be helpful to know the thickness/density of your paper. The specifics, grades, etc. are beyond your question. However, you can look at the cover of your pad or pack, refer to your supplier if ...
smith's user avatar
  • 89
8 votes

It is easier to learn to use oil paint or acrylic paint?

Oil paint dries slowly and mixes well on canvas (A thin paint will stick to a thick paint). It also adds texture but shows brush strokes. You are going to want to work in a ventilated area. Acrylic ...
2redshirt's user avatar
8 votes
Accepted

Wall art sizing - how to convert between inch and cm?

If you are seeing online store references that sell items manufactured for US sales primarily, the inch figures are more likely going to be accurate. The conversion results, for your example, in 35.56 ...
fred_dot_u's user avatar
  • 7,454
8 votes
Accepted

Drawing human or animal bodies which aren't too realistic

If you want to draw objects (humans, animals, or whatever) that are stylised (i.e. aren't too realistic) you need to learn how to draw them realistically first. The idea is the same as “learn the ...
user18849's user avatar
8 votes
Accepted

Why is everyone so secretive about pricing for painting miniatures?

In my own personal experience, I have found that sellers do not publicly post their prices in order to remain competitive in the market. If they were to post their prices, a competitor can easily ...
Sarah Weiss's user avatar
8 votes

Can I make primer from student grade acrylics?

In short: No, you cannot make an effective primer out of paint. Primer is not just "paint without pigment," and the purpose of it isn't as a base coat; the purpose of primer is to prepare your ...
Allison C's user avatar
  • 4,054
8 votes

How can I paint 1000 wooden balls that are 1" each?

Painting by immersion would be fairly easy, but drying would be harder. Industrially I suspect they'd be kept moving with warm air. They'd be too expensive for this quantity, and come in sets of too ...
Chris H's user avatar
  • 6,799

Only top scored, non community-wiki answers of a minimum length are eligible