Any paint experts here?

[mrmick]

Did you wash the gun out with thinners or gun was and before you put paint in gun did you put a bit of 2k thinners through it first

[easytime]

Originally Posted by mrmick

Did you wash the gun out with thinners or gun was and before you put paint in gun did you put a bit of 2k thinners through it first

The gun was washed out after use last time, about a week ago. Then to get the setup on it I put some cellulose thinners into it and a drop 10ml or so of blue, sprayed all of that onto some paper sheets on the wall to get flow and pattern shape correct. Expended all of that onto the wall, say 100ml. Mixed the blue in a new mixing tub with equal part 2k thinner, strained it into the gun (HVLP type) and painted.

[mrmick]

Can only put it down to polish or silicon really had it happen to me a few times all you can do is take it right back and start again really I know its a ball ache

[easytime]

All I can think of is the cloths I was using for the water wipe down after sanding the primer. They were a 10 pack of micro fiber cloths from asda, they might have had 'something' on them that left traces on the bumper. The only paint I used that was different from the previous trims I have done was the primer, it was previously Halfords plastic primer, mo issues with that. This time I used Halfords standard grey primer, it says it is acrylic, but that is the only difference from last time. I am really bummed about this because I have been trying for weeks to get the gun setup right and today it was 100%, beautiful even coat, no runs, no thin patches I was very happy. But as seen after about 2 mins the wrinkles started and 20 mins later most of the bumper was covered.

[mrmick]

Full strip back and start again . I use halfords plastic primer with no problems at all

[Mark S]

Originally Posted by easytime

Paint is cellulose blue, cut 50% with acrylic thinners. Primer is acrylic from a rattle can.

celly, over rattle can acrylic???

and therein lies your problems!!!

[easytime]

Originally Posted by Mark S

celly, over rattle can acrylic???

and therein lies your problems!!!

They incompatible together?

[Bobdope2002]

eeeeep



Did you use any plastic primer on the bumper prior to grey priming it has to be done unfortunatley

[easytime]

Originally Posted by Bobdope2002

eeeeep



Did you use any plastic primer on the bumper prior to grey priming it has to be done unfortunatley

No, this was on top of a previous paint job. What the primer is on top of is 2p2k clear.

[Bobdope2002]

thats where ya problem lies my friend

in my experience of painting/recoating plastic things they have to be taken back to pretty much naff all then re plastic primered or failing that a good coat of etch primer

two different types of paint brand will clearly differ and the chemicals used in both may not like each other resulting in blistering and a reaction