These are all the tools I use to create mandalas, big and small.
A good locking compass is essential for drawing an accurate mandala.
These are probably my most used pens. They've got a chisel tip which is good for controlling the width of your lines. Nice, smooth, even coverage too!
The best paint pens out there, smooth, even coverage. If you're doing really technical work this pen works great! If you're going MASSIVE then check out some of the other paint pens in my kit.
I love this pen! Great for filling in large areas, you can refill the ink or even just dip it in ink.
To be honest I never use a protractor anymore, but you never know it might come in handy.
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