guide coats

[Steves69LS3]

hello which would be a more efficient guide coat? the spray on or the powder?
i have been using the 3M powder guide coat and want something a little quicker to apply.

 

['68 Coronet R/T]

I personally like the powder. It has lasted for three completes and a couple of repairs so far. One thing I have learned is that it doesn't take near as much to give the necessary contrast as I was putting on at first. Now a little goes a long way and the application goes much quicker.

 

[Jim C]

the powder works great. i use it on smaller items, bike parts, fairings etc but for a whole car or a booth load of stuff i will spray on a guide coat on the primer before i pull the parts or car out since it is waaay faster. i have used many things over the years for a guidecoat. in the end just a super over reduced primer in a contrasting color works well. i have used black rattle can primer, super reduced black basecoat... it all works. for many years i used, and still do, dykem blue layout machinist dye mixed into reducer. it has zero build, dark purple color. works great.

 

[5wndwcpe]

the powder works great. i use it on smaller items, bike parts, fairings etc but for a whole car or a booth load of stuff i will spray on a guide coat on the primer before i pull the parts or car out since it is waaay faster. i have used many things over the years for a guidecoat. in the end just a super over reduced primer in a contrasting color works well. i have used black rattle can primer, super reduced black basecoat... it all works. for many years i used, and still do, dykem blue layout machinist dye mixed into reducer. it has zero build, dark purple color. works great.

Ah, you learn something everyday around this joint.

 

[Bob Hollinshead]

KIS IMO, I just keep an old siphon feed devilbiss JGA502 loaded with lacquer primer overreduced with waste solvent and a few marbles in the cup, put your finger over the vent, a few shakes, and shoot a thin coat. fast, no mess, no waste, gets rid of my waste solvent, and it's cheap-a $30/gallon of cheap lacquer primer lasts me 2+ years. I've been bit a few times using the dry guidecoat when it showed sandscratches being sanded away when they weren't. I bet the machinist dye works the best but never tried it.

 

[jcclark]

I've been bit a few times using the dry guidecoat when it showed sandscratches being sanded away when they weren't.

My experience exactly.