Need a bit of help - Polishing on paint corrected panel

Need a bit of help - Polishing on paint corrected panel

Author
Discussion

Samjeev

Original Poster:

725 posts

120 months

Sunday 31st May 2015
quotequote all
Need a bit of advise on where to go next with this.
I recently repaired a scratch on this panel and although the scratch was a small one on the edge of the panel I Painted most of the panel to help blend the colour and due to the general size of panel.
Right near the end of this little project when im polishing out the orange peel in the paint and it seems as though the new layers of paint/clear have been broken through leaving me with a bit of an ugly mark on the panel.

I am looking for some advise on how to fix this or blend it in however I guess the layers of paint are something like this now:


Anyway hopefully someone from here with the know-how can give me a bit of advise on this. Of course as always threads like these are a bit useless without pictures so:



jaacck

188 posts

139 months

Tuesday 2nd June 2015
quotequote all
love these cars in that shade of blue. Always wanted a ride in one!

Samjeev

Original Poster:

725 posts

120 months

Wednesday 3rd June 2015
quotequote all
jaacck said:
love these cars in that shade of blue. Always wanted a ride in one!
Thanks smile the colour is called Europa blue, it looks excellent in any situation in my opinion.
Seen you a couple of times around hove recently so maybe I can give you a passenger ride in the VX some time.

Just been sorting out a couple of things on it while the weather has been bad such as a scratch on the above panel but i'll be driving it a bit more as the sun comes out soon

paintman

7,669 posts

189 months

Wednesday 3rd June 2015
quotequote all
You'll have to reapply colour coat to cover the damage & blend out then clear coat the lot again.
If the panel is small then clearcoat the whole panel with two full coats. Gives you more material to polish afterwards.
The problem with 'corrected' paintwork is that material has already been removed & it's all too easy to go through the clear.

Samjeev

Original Poster:

725 posts

120 months

Wednesday 3rd June 2015
quotequote all
paintman said:
You'll have to reapply colour coat to cover the damage & blend out then clear coat the lot again.
If the panel is small then clearcoat the whole panel with two full coats. Gives you more material to polish afterwards.
The problem with 'corrected' paintwork is that material has already been removed & it's all too easy to go through the clear.
I feared that may be the case.
If its any difference the area pictured was not the original damaged part of the panel so i've only gone through the new layers of colour and clear that were some what oversprayed/blended in to the small area that actually have to be sanded, fillered, primered and painted fresh, not sure if i got this across very well in my OP otherwise sorry for repeating myself smile

If guess if i were to go over the area in another layer of clear i'd simply see the strange paint effect through the clear even once it has dried and been buffed/polished?


Squiggs

1,520 posts

154 months

Wednesday 3rd June 2015
quotequote all
Samjeev said:
I guess if i were to go over the area in another layer of clear i'd simply see the strange paint effect through the clear even once it has dried and been buffed/polished?
Correct

paintman

7,669 posts

189 months

Wednesday 3rd June 2015
quotequote all
^^^^^ Unfortunately yes.

Edited by paintman on Wednesday 3rd June 21:17

Samjeev

Original Poster:

725 posts

120 months

Wednesday 3rd June 2015
quotequote all
Balls smile ohwell cheers for the confirmation guys
Paint can be such aggravating stuff can't it? Saves a tonne if you can fix scratches and the like yourself though

Samjeev

Original Poster:

725 posts

120 months

Saturday 13th June 2015
quotequote all
Well as a bit of an update on this sad tale it's gone from bad to worse frown

At first I was just going to live with the paint for now as it's hardly noticeable on the car and isn't the end of the world in terms of presentation when compared to the scratch that was there before or the stone chips on the car however...

A month after having done all the paint on this panel and few weeks after I finished polishing away some of the orange peel and imperfections I managed to get some petrol on the panel which instantly seemed to melt the clearcoat upon contact leaving me with a messy, sticky and glazed panel.
At first I hoped it might've just been the wax I applied after I finished polishing the panel which had melted but upon cleaning and attempting to polish the damage today it's clear the paint is screwed.. again.

Not sure why this would've happened when the clearcoat has had over 4 weeks to cure but now I really am going to have to respray this panel. The damage isn't entirely clear from the picture but you can definitely feel its there in the top right corner and down the left side:


johnS2000

458 posts

171 months

Saturday 13th June 2015
quotequote all
4 weeks probably isn't long enough .

I've had clearcoat sprayed by myself that clearly states it can be polished 24 hours after application !! Not a chance until at least 6 weeks .

I've had a bonnet professionally resprayed where the sprayer has asked how I get my paint to shine and I've bluntly told him to stop using solvent type paint or wait a minimum of 6 weeks before finishing .

A smart repairer I've used uses water based paint and dries it with an infra red lamp and it polishes straight away .

paintman

7,669 posts

189 months

Saturday 13th June 2015
quotequote all
I use water based paint, but that's the colour coat. It needs clearcoating. I use 2k clear & flat & polish after IR bake.
If petrol is affecting it then I suspect you're using a single pack clear?

Samjeev

Original Poster:

725 posts

120 months

Sunday 14th June 2015
quotequote all
The clear I used was an aerosol 2k clear - "HB Body Autoclear 496"
I think next time around i'll use a different can of clear I have

paintman

7,669 posts

189 months

Sunday 14th June 2015
quotequote all
Speak to the supplier to check that this is actually a 2k clear - i.e it uses a hardener mixed into the clear & hardens by chemical reaction not just by evaporation of solvent. If the latter that would explain the effect of petrol - a solvent - on it.
I believe there are aerosols that have this makeup & once activated inside the can you have a relatively short window of usage before it hardens inside the can but I've no experience of using them. I use 'normal' 2k clear applied with a spraygun.



Edited by paintman on Sunday 14th June 22:27