34
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 ...
- 441
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 ...
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 ...
- 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", ...
- 2,966
14
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 ...
- 1,828
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 ...
- 141
13
votes
What are good ways to spray paint a QR code on a footpath?
What about a custom 3D printed embossing roller?
- 1,034
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♦
- 13.5k
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 ...
- 6,919
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 ...
- 7,629
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♦
- 13.5k
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 ...
- 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 ...
- 398
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 ...
- 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 ...
- 11.5k
10
votes
Accepted
Removing latex paint from glass
Use a razor blade scraper to remove the paint. This is what is normally used to remove latex paint from window glass when painting window sashes in a house or apartment. Latex paint comes off fairly ...
- 216
9
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 ...
- 106
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 ...
- 191
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 ...
- 7,629
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 ...
- 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 ...
- 85
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 ...
- 7,629
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 ...
- 376
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 ...
- 4,074
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 ...
- 6,919
8
votes
Masking tape tears paper off!
There are a few tricks of the trade for using tape on drawing paper. Here are some of them:
Use good quality paper.
Try using different types of tape to see which kind works best with the type of ...
- 396
7
votes
Accepted
It is easier to learn to use oil paint or acrylic paint?
Generally speaking, acrylic is a cheaper and more forgiving medium to start with. As mentioned by other respondents, acrylic is fast-drying and can be painted over. You can also use acrylic media, ...
- 651
7
votes
How to avoid painting SD card pins
More details regarding your objective would be useful, but one can expect certain commonalities irrespective of your final goal.
First off, unless you are inclined to excessive labor, expect to not-...
- 7,629
7
votes
Can nail polish be used on jewelry?
When considering the compatibilty of coating materials, the intended use (jewellery) is less important than the base material. Nail polish/paint sticks well to some materials and not others. Without ...
- 6,919
Only top scored, non community-wiki answers of a minimum length are eligible