Spray painting lines?

[flanajb]

Hi,

I have a repair to do on my surfboard and am thinking of doing something a little different on the nose by using a piece of veneer under the glass. I want to then spray fine lines like those in the image below. Is it a simple case of just masking off a strip with fine masking tape, eg 5mm wide or is there more to it?

Thanks

 

[blackrodd]

There's a bit more to it , I think the colours are in the gel coat, under the finish.
I reckon there's a surfer here abouts who will give you the lowdown.
Regards Rodders

 

[marcros]

I think you can buy lining tape- can't think what it was called or where I saw it but search for coach lining on google maybe.

I fancied some lines on my discovery!

 

[rileytoolworks]

If it's simply a case of spraying the line, then pinstripe tape is what you're after. Available in many widths.
Check the bay.
All the best.
Adam.

 

[nev]

You can either ...
paint the line colour then once dry mask a single 5mm line and then paint the outside colour
or
paint the outside colour and mask two lines leaving a 5mm gap between them - which could be tricky
or
paint the outside colour and get a two line tape and mask over the outsides - simplest
see here for tape examples.
http://www.pinstripinguk.com/

 

[rafezetter]

You can either ...
paint the line colour then once dry mask a single 5mm line and then paint the outside colour
or
paint the outside colour and mask two lines leaving a 5mm gap between them - which could be tricky
or
paint the outside colour and get a two line tape and mask over the outsides - simplest
see here for tape examples.
http://www.pinstripinguk.com/

if you do this though a word to the wise to get perfect crisp lines... either way you do it the FIRST thing you should do after masking is lay down 1 light coat of the SAME colour as you've just covered, to seal the edges of the tape so when you add the contrast colour it will only come out on the area you want and not bleed under the edges (as any bleed through from the seal coat will be the same colour as the base colour).

Regardless of whatever the tape claims to do, don't trust it. All professional custom spray painters do this, as there's nothing more time consuming to fix than a jaggy edge.

degrease the area thoroughly before painting (panel wipe is best) and don't touch it with bare fingers after you've degreased, get some latex gloves without powder.

You also need to be able to lay down the contrast colour in fairly short order after the seal colour coat, to give you time to peel off the mask before the edges set hard, so keep a mix of both of them ready. And if you do by chance mess it up take off the mask as soon as you can BEFORE the paint sets to give it a chance to level out, as once set it will create a tiny ridge you'd have to polish out, before re-application.

Oh and don't premix (adding thinners) the paint too far in advance as if left too long it'll affect adhesion and curing times. And do it in a warmer environment 10deg C+ or you'll get "blooming" where the paint finish comes out patchy.

there's other stuff to consider, but that's the general main things to think about