Do u mean what is a 3 round liner tattoo needle used for? The 3 represents how many needles total, and round means they are arranged in a circle as opposed to lined up beside one another, liner means it is used for making lines. A 3RL is most commonly used for tattooing very fine lines in small or very detailed tattoos or lettering.
They are for fine lines and detail that's in the tattoo you can also use this needle to do awhole tattoo for lines and shading without changing needles
to do the outline on a tattoo you need a needle called a liner for instance you could use a 14 round liner. now for shading you need a shader which is another kind of needle now you can use a 14 round shader or a 14 flat mag shader that answer your question and an p.s you can get a needle any size they can go as small as 1 all the way up to a 49 flat and so on
In almost all instances, one uses a 3RL, or perhaps a 7RL. All depends on the artist and the size of the piece.
You just said it yourself: Lining. Five rounds are used to create a finer, more delicate line though, but it also depends on how heavy handed you are. If you're heavy handed, then your five round lines could look like seven round lines.
7 or 9 magnum or a 14 round for heavy filling such as tribal .......
You should contact a local pool specialist to be sure, but it appears 48-inches is the standard for that size liner.
chances are your outline is done by a 5 or 7 liner (5 or 7 needles grouped tightly together) and your shading/color fill is done with a 7 mag or 14 mag depending on size of tattoo
If your doing a full color tattoo, meaning just one shade i usually use a round shader, if you want to do transaction from light to dark i use a flat mag. Sizes all depends on what your comfortable with, for a large piece or tribal i use a 25rmag and a 5rs for tighter space. for the tip i use the same liner to fill in. but just try and see what works best for you. This is my advice I have 6 years of experience currently working as a tattoo artist. Some artist will agree or disagree with my advice.
You use size B.use a 7 to 9 mag
well currently i am using a 5RL for writing. But really depends on the font and the seize i will see if i can upload a pic of one i have done with a 5RL on my self. i am still learning though. dont seem to be able to upload pic sorry
22uf 8 wrap liner (probably too FAST), 33uf 8 or 10 wrap still fast but more steady power, and 47 uf 10 or 12 wrap color . slower harder hitting . remember 8 wrap is liner, 10 is liner /shader (set up like a liner) and 12 wraps 47uf is only for big mag set up.
For the most common size that you would be doing it in. Line it with a 3RL, and then do your edges with 5RS. Then do the middle fill with a 15RS. The bigger the letters, the bigger the shade needle size and in some instances, the liner as well.