6 replies to this topic

[Element_01303]

Hopefully Paul or one of the other paint gurus' will jump in here and help me out....

After finishing my fiber filler job on my wing to scuttle gap yesterday, filling the holes in the filler with p38 and a a nice final sand with 120...I thought I had made a flawless repair. Could not feel the edges where it blended to metal (filler is going on a stripped and etch primed metal surface) no obvious imperfections....When I put a thin primer coat on top (etch primer) the edges jumped out, a small ridge showed up, and small pin holes....

So the question is do I need to go back and re-sand? the entire vehicle is going to be sprayed first in a hi build primer before the color coat (cellulose) and am wondering having never used this before, what kind of imperfections will it hide? It is ment to do this right, blend small imperfections out? Just would like a bit of clarification as I am spending alot of time (3 weeks now every night, and weekends...) trying to get the body perfect and would hate to go off my assumtion that it will be fine and have to fix it later....Thanks alot guys!

-Christian

Edited by Element_01303, 13 May 2009 - 08:27 AM.

[cookie4343]

Try blocking with 800 wet and dry then re primeing with some high build, sounds to me you still have edges where its not been blended properly, also fill the pinholes with some stopper filler and block back with some 320.

[Element_01303]

Try blocking with 800 wet and dry then re primeing with some high build, sounds to me you still have edges where its not been blended properly, also fill the pinholes with some stopper filler and block back with some 320.

Was thinking this was what I was going to end up doing....well the more time I spend the better the end result, I think with body work it is quite easy to get over ambitious and think you have done enough of a job....but if its not good enough you will deff see it in the end and just make more work for yourself. Well thanks for the advice, and I will get back to the sanding....

[Paul Wiginton]

Dont wet n dry the filler as it retains moisture and after painting the moisture will try to get out and cause microblisters.

Cellulose never dries hard, its always soft so the edges of the filler could return at some point.

Filler ideally should go on bare metal as its easier to lose the edge than on top of paint/primer.

Personally I would sand back the edge of the filler and re apply some more so the edge is on the bare metal. The primer will fill the pinholes.

2 pack primer would lose the edge and not return as it gets harder with age and so wouldnt 'move' for want of a better word.

Paul

[cookie4343]

Try blocking with 800 wet and dry then re primeing with some high build, sounds to me you still have edges where its not been blended properly, also fill the pinholes with some stopper filler and block back with some 320.

Ok sorry dont think i worded this right so ill explain what i meant.
Block the primer you have already applied with 800 wet and dry and then re prime with high build primer 1-2 coats.
If imperfections are still there flat with 320 DRY then apply abit of stopper filler and Dry block flat with 320, Then re apply primer.
Also ive never had a proplem with wet flatting filler, as long as you let it dry out, you wont get moisture proplems.
P.S I may be totaly wrong but i can accept that.

[minilover16v]

i do repairs like this every day as im a sprayer and body repairer i block it with 120 then 320 to feather out the edges you dont need to wet flat as you are priming the mini you only 800 wet flat if its filler to paint hope this helps please get back if i can help with anything else dave

[Frog]

Hopefully Paul or one of the other paint gurus' will jump in here and help me out....

After finishing my fiber filler job on my wing to scuttle gap yesterday, filling the holes in the filler with p38 and a a nice final sand with 120...I thought I had made a flawless repair. Could not feel the edges where it blended to metal (filler is going on a stripped and etch primed metal surface) no obvious imperfections....When I put a thin primer coat on top (etch primer) the edges jumped out, a small ridge showed up, and small pin holes....

So the question is do I need to go back and re-sand? the entire vehicle is going to be sprayed first in a hi build primer before the color coat (cellulose) and am wondering having never used this before, what kind of imperfections will it hide? It is ment to do this right, blend small imperfections out? Just would like a bit of clarification as I am spending alot of time (3 weeks now every night, and weekends...) trying to get the body perfect and would hate to go off my assumtion that it will be fine and have to fix it later....Thanks alot guys!

-Christian

High build primer can be a god send if you have a small imperfection in a panel, you can hide small scratches,small dents,etc etc as long as you know what you are doing. I generally will put 2 or 3 good coats on an iffy panel, let it dry then dust with a dark spray can then wet flat back with 800. Keep rubbing back until all imperfections have gone. Be careful not to rub right through. It takes time but it is worth it.