I am making a giant ruler height chart out of a 2m plank of pine for my kids and need some suggestions on how I can get a nice neat straight line for each centremeter mark. I'll be using a stencil with acrylic paint for the numbers but not sure how to do each cm line.
I did a practice run today and am not happy with the results. First I used an oil based paint pen and a ruler but a few of the paint lines have run under the ruler making them thicker than the rest of the lines. Then I used a thin paint brush and black acrylic paint and while I like the look better than the paint pen, it annoys me that the lines are all slightly different, you can see it's been hand painted.
Any suggestions on how I can get straight lines all the same?