ok, got my new bumper today and completly messed it up when putting the laquer on. basicly it went all bubbly and looks fooking awful...

anyone got any idea of the quickest way to get the paint off and start again because it doesnt seem toi be sanding off particaly well so stipping might be easier??

help! hope i aint completly messed this bumper up

I'd Use harsh wet & dry paper & **** loads of cutting compound? then go over with Fine stuff? lol Depends on how much time & how pissed off you get..

Using something like Nitromors would remove the paint as well as the lacquer!

There must be some contamination on the bumper to make it bubble like that.... I would flat back as well as you can, get rid of all the bubbling, clean it well with water, dry it off and try again.

Shouldn't you get it all done professionally Chris?

Even do the prep work and then get it all done in a oner if it's how you want it to stay?

Liam

for god sake do not use paint stripper on bumpers because if its plastic it will melt it and if its a glassfibre bumper it will disolve the resin

just use 240 grit wet and dry paper loads of water and soap then 400 grit, then 800grit its worth all the time and effort and why did you getbubbling ive only heard of that happening when putting the laquer on too soon which creates solvent poping

well all the paint was dry and i sanded it back a little a u do before applyign the nextcoat...

no idea why it bubbled

anyway, ive got th majority of the paint off not anyway.

what type of laquer and spray did you use?
Sometimes the laquer will react with certain types of spray, happened to my mate and ended up just takin it to a body shop to get it redone

For the job to last you need to use the right paint, if it is glassfibre/kevlar/carbon fibre air dry is ok but use an etch primer before grey primer. If it is plastic you have to use a surface modifier (sold as clear plastic primer by upol) and 2k paint with plasticiser will be a whole lot more durable than air dry(cellulose) We usually charge £100 plus tax to paint a new bumper.

I used halfrauds spray cans for the primer and colour and then some 2 pack lacquer . ive used this combo before and didnt have a problem. did my back bumper with it and its got a gorgeous finish (although its not perfect).

i really dont know why it bubbled but nevermind.

ive redone the lot using just halfrauds spray cans and the halfrauds lacquer just to make it easier. its currently drying now and looking good.. will see proper in the morning

and your let us know

Paint / lacre sometimes bubbles if the surface is contaminated with silicone.. You didnt rub it with a cloth before hand that may have some silicone on it (from back to black for example). I had major trouble when i resprayed my uno last summer cos of that stupid back to black :bang: Even the tiniest bits can cause bubbling.

The worst things to cause silicone spotting is as you say back to black but also if you have polished something in that area in the last hour and buff it off the tiny bit of dry polish can land on the sprayed item and cause silcone spotting as alot of polishes contain alot of silcone which is why people never polish in spraybooths.

Also bushboy if youve used spray can laquer then it will be single pack rather than 2 pack so the shine will be no where near as good and aint as durable and why havent you got a compressor and spraygun yet you cheap sod

wayne

i have lol! thats what i used in the first place to spray it... i used the cans this time because i used the last of my paint when i buggered the job the first time and cans and cheaper!

ill do a coat of 2pack over the top sometime soon to make it look gorgeous. looks shiny enough at the moment heh. but i just wanted it on in the right colour

as for using a cloth... i did wipe it to get all of the dust off from sanding but im pretty sure it was clean... maybe not after all...

ah well.. all sorted now

check https://www.fiatforum.com/showthread.php?p=311591#post311591 for pics

Bushboy said:

as for using a cloth... i did wipe it to get all of the dust off from sanding but im pretty sure it was clean... maybe not after all...

Click to expand...

Best bet to get dust off is to always use 'Tack cloths' - you can buy them at most places but Halfords sell them too. They are slightly sticky cloths and they're sold for the express purpose of removing dust from surfaces prior to painting. But they won't remove oil spots, or silicone, or anything like that. For thet I always use a clean absorbent rag and a little thinners.

Tosh