Technical Help! Painting small items with sharp edges with todays paint

Painting small items with sharp edges with todays **** paint. After 2 coats (white single stage acrylic urethane) paint doesn't seem to cover the sharp edges. Seems to over good everywhere elso. Is this just a problem I have? Any tips?

 

example of what your painting?
did you prime it?

 

Door hinges, and no I forgot to prime them, I did sand them though!

 

I think you answered your own question.

 

primer should stay on the corners and with the proper shade should cover with a thin paint.

 

Apply your first coat as a tack coat and allow it to dry 15 mins or so before additional coats.

 

i suggest DP48lf epoxy primer/sealer. will solve the problem.

 

Break the sharp corners with a file?

 

Like said above, DP primer works well. We spray a coat on all smalls parts with DP40Lf before we paint whether they have paint or bare metal. I don't like to sand small parts so most get a trip thru the gl*** bead cabinet, hung up and sprayed with the DP then paint an hour or so later. No sanding so it's easy, well as easy as painting all those damn small parts can be.
I know DP48 was suggested, we just use DP40 (the green) on everything but we're a shop, we paint a lot of different colors. If you are buying it to do one job buying a close base like 48 (white) for white parts will cover easier.

 

by the look of that , get rid of sharp edges (dremel if you have it) sand , prime, prime, sand .... paint

 

'Surface tension' is likely at work there. Surface Tension is why water makes a bubble or droplet shape instead of 'sheeting' on a flat surface. On edges of parts the liquid paint tends to 'gather' away from the edge. That phenomenon is why production painting began using electrophoretic painting processes whereby the paint adheres in equal thickness on edges the same as flat surfaces.

'Breaking' the edges, as well as use of primer, as recommended in above posts, is probably your best approach.

Ray

 

^^^^^^ Agree with Hnstray ^^^^^^