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OK, my standard disclaimer. I am sure somebody can do this better but, I was asked to write how I did this so here goes....
I just finished painting a black and white 32 Ford firewall for Tom Kren and I took a few photos as I did it. This is the second one I did so I am improving as I go and so can you. Remember practice, practice! I first used a pencil and traced 1/8" blocks onto a raw plastic firewall to see how the measurements worked out
Once I had a good version that I liked the spacing I sanded and painted the white onto another spare firewall. After the paint was dry I cut masking tape into 1/8" strips using a stainless steel ruler on a sheet of thick plastic and a straight razor.
We then tape to the firewall vertically so we only will have to cut the horizontal lines on the plastic.
After taping I mark my 1/8" marks on both outside edges of the firewall and then use the stainless steel ruler to cut all my horizontal cuts including the outside edges and remove every other block with the tip of my xacto blade (here is the tricky part not to gouge the plastic with the tip)
Once you have all the masking tape finished your ready to paint! I used spray can because I was in a hurry to finish. I recommend using an airbrush because of less bleed thru but, if you do use a spray can mist light coats slowly to minimize bleed thru. Once your paint is dry it is time to remove the remaining masking tape using the xacto blade again AGAIN this time it is really critical that you do not scratch the paint from under the tape.
That's it your finished! You can clear coat or add decals if you like or both. This one will be as is for now.
enjoy!
