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Building Tips and technical articles. => Paint and finishing => Topic started by: Tim Wescott on March 06, 2022, 05:50:58 PM

Title: Pinstriping, or color matched "ink" lines
Post by: Tim Wescott on March 06, 2022, 05:50:58 PM
I'm closing in on getting a scale project done for the NW Regionals (usual disclaimer -- I may actually get it to this upcoming Regionals, but then, maybe 2023...

The original is white with big blocks of red, set off with matching-color pinstripes.  They're probably 1/4" to 1/2" wide on the original, but that means they're going to be teeny on the model.

I could just cheat and make the pinstripes with red Sharpie, and if anyone points out that they don't match retreat behind claims of colorblindness (which I can, because I am, partly).  But I'm much rather they actually match.

I'm painting with dope.

Is there a way to make such fine lines with dope?  At the moment I'm leaning toward thinning dope with pure retarder, and using those drafting pens that usually see more use as Things to Puzzle Millennials, when they see any use at all.  Is that a stupid idea?  Is there a better way?  Should I just use red Sharpie and pretend that all reds are the same red?
Title: Re: Pinstriping, or color matched "ink" lines
Post by: Howard Rush on March 07, 2022, 10:55:26 PM
https://finessepinstriping.com/wp-content/uploads/2018/08/sizing.pdf , see F-29 and F-55.
Title: Re: Pinstriping, or color matched "ink" lines
Post by: Robert Whitley on March 07, 2022, 11:49:33 PM
Whatever you do DON’T use dope in a drafting pen.
I made that mistake and ruined a pen. The dope attacked it and basically melted the plastic in the pen.
And yes it was not a cheap one. It was a rapidograph.
Title: Re: Pinstriping, or color matched "ink" lines
Post by: Ken Culbertson on March 08, 2022, 12:21:19 PM
This is an extension of Howards idea.  I recently ordered some cheap automotive masking tape on Amazon (sorry - I like Amazon)

https://www.amazon.com/Millimeter-Masking-Automotive-Painters-Painter/dp/B09685GW48/ref=sr_1_2?keywords=10+Rolls+Fine+Line+Tapes+1%2F8+Inch+3+Millimeter+Vinyl+Fine+line+Masking+Tape+Blue+Vinyl+Automotive+Masking+Tape+Painters+Tape+for+Curves+Automotive+Car+Painter%2C+33+Meters+for+Each+Roll&qid=1646767535&sr=8-2

It is really cheap (when you have a PA budget that excludes front row finishes you do cheap), and you get a whole bunch of it.  I tried it on MonoKote and Rattle Can finishes and it works nearly as good as the 3M.  It does small curves better.  So I tried doing a panel line on some scrap that was finished with Rustoleum.
Not bad.  I think you could go to 1/32 without much trouble.   Push it down several times and use a brush.
Title: Re: Pinstriping, or color matched "ink" lines
Post by: fred cesquim on March 11, 2022, 02:28:48 PM
I'm closing in on getting a scale project done for the NW Regionals (usual disclaimer -- I may actually get it to this upcoming Regionals, but then, maybe 2023...

The original is white with big blocks of red, set off with matching-color pinstripes.  They're probably 1/4" to 1/2" wide on the original, but that means they're going to be teeny on the model.

I could just cheat and make the pinstripes with red Sharpie, and if anyone points out that they don't match retreat behind claims of colorblindness (which I can, because I am, partly).  But I'm much rather they actually match.

I'm painting with dope.


Is there a way to make such fine lines with dope?  At the moment I'm leaning toward thinning dope with pure retarder, and using those drafting pens that usually see more use as Things to Puzzle Millennials, when they see any use at all.  Is that a stupid idea?  Is there a better way?  Should I just use red Sharpie and pretend that all reds are the same red?
there is red india ink, you can use with your drafting pen
Title: Re: Pinstriping, or color matched "ink" lines
Post by: Tim Wescott on March 11, 2022, 08:40:59 PM
Whatever you do DON’T use dope in a drafting pen.
I made that mistake and ruined a pen. The dope attacked it and basically melted the plastic in the pen.
And yes it was not a cheap one. It was a rapidograph.

I was thinking of the really old pre-rapidiograph drafting pens.  The kind that's just two blades with adjustable spacing, that comes in a set with all the compasses and whatnot.
Title: Re: Pinstriping, or color matched "ink" lines
Post by: Tim Wescott on March 11, 2022, 08:42:53 PM
https://finessepinstriping.com/wp-content/uploads/2018/08/sizing.pdf , see F-29 and F-55.

That looks remarkably like cheating.