White specks in my 2k urethane

Discuss anything after that final masking comes off.



Settled In
Posts: 33
Joined: Sun Jun 04, 2017 10:28 am

Country:
Canada
PostPosted: Mon Sep 04, 2017 8:47 am
I haven't got any clear but surely I'll still see the speckling through the clear?

User avatar

Board Moderator
Posts: 9878
Joined: Fri Oct 20, 2006 12:40 pm
Location: ARIZONA
PostPosted: Mon Sep 04, 2017 4:29 pm
My guess is the speckling is really tiny craters where the tops of the solvent bubbles have broken off.
If you pour water on the area do the specks disappear?
1968 Coronet R/T


ACTS 16:31



Settled In
Posts: 33
Joined: Sun Jun 04, 2017 10:28 am

Country:
Canada
PostPosted: Mon Sep 04, 2017 10:40 pm
Still there under light when wet.

User avatar

Board Moderator
Posts: 9878
Joined: Fri Oct 20, 2006 12:40 pm
Location: ARIZONA
PostPosted: Tue Sep 05, 2017 8:05 am
You will need to sand and buff them out.
1968 Coronet R/T


ACTS 16:31



Settled In
Posts: 33
Joined: Sun Jun 04, 2017 10:28 am

Country:
Canada
PostPosted: Tue Sep 05, 2017 11:22 pm
Last clue.. there was another run on the roof and when I tried to flatten it out the same speckles appeared.
Seems anywhere the paint had a run or a sag this would appear.

The image is upside down but you can actually see the outline of the run!!!

Image

User avatar

Board Moderator
Posts: 9878
Joined: Fri Oct 20, 2006 12:40 pm
Location: ARIZONA
PostPosted: Wed Sep 06, 2017 11:20 am
Solvent pop.
Tiny bubbles of solvent trapped below the surface. As you sand the run you break the bubbles open and have miniature craters that fill with sanding dust and appear white.
You may be able to sand them out and then buff the area.
1968 Coronet R/T


ACTS 16:31



Settled In
Posts: 33
Joined: Sun Jun 04, 2017 10:28 am

Country:
Canada
PostPosted: Thu Sep 07, 2017 8:49 am
Sanded and buffed but they appear elsewhere then.! Never paint black! Thanks for the help.

User avatar

Board Moderator
Posts: 9878
Joined: Fri Oct 20, 2006 12:40 pm
Location: ARIZONA
PostPosted: Thu Sep 07, 2017 9:45 am
Unless you used a bargain basement brand, it's not the paint, it's the process.

Single stage requires a different technique when spraying and with some practice can produce excellent results. Paint quality also makes a big difference.

I prefer base coat clear coat to single stage. If something goes wrong with the base coat it can be fixed before the clear goes on. If something doesn't look right with the clear it can be addressed without ruining the paint job.

Two examples of shooting black:
ProSpray Ford Ebony
ColorasSprayed.jpg


********** Black, Black:
FairingandFenderassprayed.jpg
1968 Coronet R/T


ACTS 16:31



Settled In
Posts: 33
Joined: Sun Jun 04, 2017 10:28 am

Country:
Canada
PostPosted: Thu Sep 07, 2017 5:42 pm
It's definitely my fault. The parts I lucked out on were all painted horizontal so easy to do and watch the paint go on. All these bad patches are on the main body. Vertical surfaces threw me a curve ball for Sure!


I couldn't afford to have it painted so it is what it is


Image


Image


Image


Image


Image


Image

User avatar

Top Contributor
Posts: 1745
Joined: Tue Apr 26, 2016 6:53 pm
Location: Denver, CO
Country:
USA
PostPosted: Thu Sep 07, 2017 6:39 pm
looks great to me good job
Experienced Trained Certified

SATA Spray Equipment Germany
Axalta ChromaBase Elite Standox Imron 5000 6000
PPG Delfeet Deltron Global Matthews
Sherwin Williams Ultra 7000 Genesis
Valspar DeBeer LIC
Akzo Nobel Sikkens Lesonal
PreviousNext

Return to Cut, Buff, Polish & Detail

Who is online

Users browsing this forum: No registered users and 39 guests