barry d 6 Posted March 4, 2013 hi im spraying primer on a fibreglass bonnet and in three different spots the primer seems to be cracking .sanded it down again last night and sprayed again.help please as i dont know what to do next. Share this post Link to post Share on other sites
stu8v 68 1 Cars Posted March 4, 2013 Sounds like it could be that the paint hasnt been mixed correctly or its been over thinned. Failing that a temperature issue? Share this post Link to post Share on other sites
Kezzer30 40 1 Cars Posted March 4, 2013 Any polish or silicon could have been near it ? Sound like a reaction , you can get some easy flow drops for about 7 quid last a fair few times aswel . Ps are u using cans or proper gun etc Share this post Link to post Share on other sites
barry d 6 Posted March 4, 2013 im using a proper gun in a heated garage.half of the bonnet is fine its just a few spots where its cracking Share this post Link to post Share on other sites
Kezzer30 40 1 Cars Posted March 4, 2013 im using a proper gun in a heated garage.half of the bonnet is fine its just a few spots where its cracking Heated garage lucky you haha and hmm its strange i had a bad laquer problem where it starte reacting on everything i sprayed turned out it was silicon so the drops cured it , very silly question but have u used proper panel wipe on it? Share this post Link to post Share on other sites
barry d 6 Posted March 4, 2013 ya i used panel wipe.where do u get the drops and how do u use them.?im going to sand the cracked parts down tonight and repaint tomorrow just dont want it to crack again. Share this post Link to post Share on other sites
Kezzer30 40 1 Cars Posted March 4, 2013 Just nipped into garage and took a photo for you mate These are what your after and most decent paint shops shoul have them all you do it put a few drops into your primer , paint or laquer mix and it works a treat lad , i use them all time to minumise reactions Share this post Link to post Share on other sites
