Mankster

Paul, just checking if you used any primer. Cant see any on the picture where you have scratched off the paint, but maybe you used white primer.

Screw Loose

I used a very light primer,(halfords own make) as thin a coat as possible to stop the very thing that happened. ie the etching getting full of paint. The bits I have removed I used the air brush to put a primer on with and it seems to be ok. Up to now anyways. But I might have not put enough primer on to begin with. I dont know to be honest, I have had that many ideas and have been proved wrong I am not sure about it

I did rough the surface up to start with to give the paint something to key onto, but as I said I dont think I cleaned it properly.

Paul

p.s
Just to ask a question about air brushes. In the literature with mine they say to mix the paint 50-50 with white spirit and the paint? I assume the white spirit is to act as the solvent, but what does everyone else use ?

Mankster

err... so you used enamel paint over acrylic primer? (the otherway round would have been ok)
The solvant in the enamel has broken down the primer undercoat which is causing the paint to flake off.

I'dd invest in few litres of brake fluid and start again.

subzero

Hello Paul.

to quote a phrase " What a mistakea to makea "

Mankster is absolutely correct ( see our previous posts ).

A full strip may be necessary,

ALWAYS, ALWAYS stick to the same chemical make up of the paint etc. Car paints are ok IF you find out what their chemical composition is and stick to it ie Acrylic with Acrylic primer etc.

I always wash my hulls down with warm soapy water and dry, then wipe with a degreasent solvent or similar and wear gloves when painting / handling etc stops the grease from our sticky mits contaminating the surface again after cleaning.

Bit of a case of bolting the stable door after the horse has bolted I know but at least next time ???

It will look weathered though in the pond as the paint flakes off.

Tell them its the hull flexing under compression from a deep dive !!!and thats why its chipping off ( bet some one will believe you )

Glad to see your still smilling though.

sub

Screw Loose

The paint I have been using is called Plastikote. I thought the primer and it was compatible. I have just e mailed the manufacturer to find the make up of it is. I think it might be a celulose based paint. Will see what they come back with. If its got to come off so be it. As I said it wouldnt be the worst thing.

Mankster

Yes Plastikote is an enamel paint, they sell their own spray primer to go with it. Its not really suitable for models. It goes on far too thick for models and drips off curved and vertical surfaces unless you are very very gentle. As the name suggests it is intented to give a plasticoated appearance to whatever you spray it on. It is designed to 'gap fill' and cover any imperfections to give a smooth finish. This is why your scribed lines have been disappearing. The good news is that fibreglass is amenable to stripping, and should come out good as new. There is paint stipper called Dillunet or something designed for stipping GRP boats and yatches thats like a gell that you brush on. Costs more that DOT4 but you wont need as much and you wont have to worry about damaging the gell coat. It should come out good as new.

Screw Loose

Dillunet, is that the stuff that International paints make ?

We used to use it in the shipyards up here alongside the anti fouling and other paints etc ?

I didnt know you could buy it in the open market now ? Where can you pick it up from ?

Mankster

Heres a couple,
** DILUNETT ANTIFOUL , PAINT , VARINSH GEL REMOVER ** on eBay, also, Accessories, Boats Watercraft, Cars, Parts Vehicles (end time 07-Mar-08 12:06:35 GMT)

www.boatpaint.co.uk Dilunett Paint Remover

http://www.owatrol.uk.com/docs/Dilunett.pdf


Another one I came across is Peel Away 1

Peel Away 1 - Paint Removal System - UK
Dumond Chemicals, Inc. Home Page

Screw Loose

Thanks Mankster, I managed to get some this afternoon from my local Chandlers. Took a little explaining to what it was for.

Its on the boat now, taken 3 hours to remove the first coat though, so its a slow proccess.

To anyone whos got an interest in the sea, I would definately recomend going to visit a chandlers. I was like a kid in a sweet shop. Theres so much there you could blow thousands on. The Ribs with outboard motors on looked particularly interesting

Definatley could not hide that in the house without her finding out

Paul

Screw Loose

I havnt had much time to do much on the boat this week, been a bit busy. And it was starting to get on my nerves a little last weekend.

I got the paint remover and took it back to the gel coat completley. That Dilunet done the job, it takes 4 hours to work though, but the paint just washes off with water straight afterwards.

I got some spirit wipe from an automotive parts place, and took lots of wax off the hull. It was covered in this odd residue, I cant think of what to call it really. But anyways it came off and looked much better afterwards.

I have re-etched the entire boat, just to get the paint out of the parts that the Dilunet didnt reach. But to be honest my father has done the most part this week, as work comitments got in the way this week. He primed it again, and wet and dryed it after every coat etc. Guess bodging up old cars in his youth has proven usefull even now after this length of time



Basically the only part I have done tonight is apply the last coat of black paint. But had to stick to halfords paint, as the model shops round here dont stock much in the way of model paints, and definatley not in the quantities required for this boat. The advantage of it being extremley thin has worked out ok, and drying time is kept to a minimum.

Only bit of paint left is the markings round the chin and upper deckwork detailing. But thats Sundays job.

Paul