Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Painting, Finishing and Care. => Topic started by: Klunk on January 23, 2013, 10:27:15 AM

Title: want to remove paint from fibreglass hull
Post by: Klunk on January 23, 2013, 10:27:15 AM
Have a fibreglass hull that needs stripping. Have removed some with acetone but this takes ages! An internet trawl suggest a paint stripper called citristrip, but does not seem available in the UK (it's  environmental friendly) any ideas what can be used to shift it without damaging the fibreglass gel coat, or sanding or using wirewool!
Title: Re: want to remove paint from fibreglass hull
Post by: Netleyned on January 23, 2013, 10:59:29 AM
Fairy Powerspray  :-)) :-)) :-))


Ned
Title: Re: want to remove paint from fibreglass hull
Post by: pugwash on January 23, 2013, 11:06:11 AM
klunk I am in the middle of stripping a new hull at the moment - Had a disaster when painting the topcoat on a
destroyer (dont know what went wrong with the paint) but it had to be stripped so I am using cellulose thinners,
painting it on with a brush and wiping off with paper towels.  Has taken about a day all told but done over several days
because of the fumes - Definitely have the window open, but it does work and has left a nice clean hull ready for
priming again. just a light wet'n'dry
Geoff
 
Title: Re: want to remove paint from fibreglass hull
Post by: chas on January 23, 2013, 11:24:14 AM
Hi Klunk, we've all been in a similar situation. I believe that there is nothing better than elbow grease and a few grades of wet and dry paper, used wet. No fumes and easy to control. With some stripers there is a danger of them reacting with the glass fibre.
Chas
Title: Re: want to remove paint from fibreglass hull
Post by: hmsantrim on January 23, 2013, 12:07:38 PM
 
      Hi Klunk.
                      can recommend the fairy power spray for the GRP  had a two top coat spray paints that did`nt like each other and had
                      to be removed.  The fairy did the job no affect to the GRP.
 
                             Frank  :P
Title: Re: want to remove paint from fibreglass hull
Post by: Netleyned on January 23, 2013, 12:19:34 PM
I have used Fairy Powerspray on an ABS Victoria hull and also to remove primer (red antifouling) from a fibreglass cygnus hull.
No problem with fumes and not too messy.


Ned
Title: Re: want to remove paint from fibreglass hull
Post by: sailorboy61 on January 23, 2013, 01:06:18 PM
Bulk Buy..................
 
http://www.brandrefill.co.uk/fairy-power-spray-375ml/ (http://www.brandrefill.co.uk/fairy-power-spray-375ml/)
Title: Re: want to remove paint from fibreglass hull
Post by: Subculture on January 23, 2013, 01:15:45 PM
Old brake fluid works well on a lot of paints
Title: Re: want to remove paint from fibreglass hull
Post by: chris gillespie on January 23, 2013, 03:57:19 PM
i have half followed stavros...
 
i damped mine with cellulose thinners, probably the wifes nail polish remover would be equivalent, sharpened a trusty chisel and scraped it all off
 
then a good rub down with increasing grades of paper...i used 240 then 400....
 
the thinners softened it all, the chisel scraped off surprisingly well....very few scratches to be had.
Title: Re: want to remove paint from fibreglass hull
Post by: Klunk on January 23, 2013, 05:31:49 PM
Fairy power spray is not available in Luton!!! Any other ideas Mr muscle oven cleaner??
Title: Re: want to remove paint from fibreglass hull
Post by: Subculture on January 23, 2013, 05:44:33 PM
Most of these oven cleaners are based on sodium hydroxide- probably better known as causitc soda. You can get that at a chemists, hardware store, or ebay etc. and mix your own solution.

Also handy for unblocking your drains. You do need to be very cautious using it though, as it can cause serious burns and respirtory problems if inhaled.
Title: Re: want to remove paint from fibreglass hull
Post by: Netleyned on January 23, 2013, 05:50:18 PM
Wilkos, Tescos  Asdas all sell it
or are you still bartering or using
cowrie shells in Loo ton??

Ned
Title: Re: want to remove paint from fibreglass hull
Post by: essex2visuvesi on January 23, 2013, 06:08:30 PM
Most of these oven cleaners are based on sodium hydroxide- probably better known as causitc soda. You can get that at a chemists, hardware store, or ebay etc. and mix your own solution.

Also handy for unblocking your drains. You do need to be very cautious using it though, as it can cause serious burns and respirtory problems if inhaled.


great for decoking cylinder heads and pistons as well
Title: Re: want to remove paint from fibreglass hull
Post by: Klunk on January 23, 2013, 06:14:24 PM
Wilkos, Tescos  Asdas all sell it
or are you still bartering or using
cowrie shells in Loo ton??

Ned

Err this is Luton, you know home of the IRA during the 70's, home of radical Muslims now and right wing edf!
Title: Re: want to remove paint from fibreglass hull
Post by: Klunk on January 23, 2013, 06:18:37 PM
And no doubt a moderator will come along and do something to this post!
Title: Re: want to remove paint from fibreglass hull
Post by: chris gillespie on January 23, 2013, 06:20:29 PM
lol.........dont discuss "whale wars" either  :-X
Title: Re: want to remove paint from fibreglass hull
Post by: A66 on January 23, 2013, 06:26:52 PM
Hi Klunk Try Panther Paint stripper available in Hitchin from a well known independant Builders Merchant,Brookers,have used this on two glassfibre hulls with no problems.
Steve
Title: Re: want to remove paint from fibreglass hull
Post by: Netleyned on January 23, 2013, 06:32:48 PM
And no doubt a moderator will come along and do something to this post!
Kenny will be requesting an avatar :D :D :D

Ned
Title: Re: want to remove paint from fibreglass hull
Post by: Klunk on January 23, 2013, 06:38:41 PM
Kenny will be requesting an avatar :D :D :D

Ned

My avatar changes by itself and disappears by itself!
Title: Re: want to remove paint from fibreglass hull
Post by: Klunk on January 23, 2013, 06:41:13 PM
Hi Klunk Try Panther Paint stripper available in Hitchin from a well known independant Builders Merchant,Brookers,have used this on two glassfibre hulls with no problems.
Steve

Excellent a trip tomorrow night!
Title: Re: want to remove paint from fibreglass hull
Post by: triumphjon on January 23, 2013, 06:53:12 PM
most modren brake fluid is synthetic or semi synthetic , which hasnt the same effect on car bodywork / paint  . nitromors do sell a specific stripper for use on grp products , but its expensive . FAIREY POWERSPRAY   is available in most good sized supermarkets  at a fraction of the cost and works !
Title: Re: want to remove paint from fibreglass hull
Post by: Stavros on January 23, 2013, 07:10:43 PM
Klunk DONT DO IT there is every chance it will attack the grp,there is a specific stripper available for grp,failing that you might well be able to get hold of some Model Strip.Plaes do NOT use acetone either as this could also damage the Grp.
 
Fairy power spray is my FAV for stripping paint off a hull
 
 
Stav
Title: Re: want to remove paint from fibreglass hull
Post by: Klunk on March 03, 2013, 11:35:59 PM
Fairy never touched it neither did Mr muscle oven cleaner! Tried acetone gel it spat that off as well! I'm on acetic acid gel at the moment. Do have the panther stuff and that's a last resort!
Title: Re: want to remove paint from fibreglass hull
Post by: chris gillespie on March 03, 2013, 11:45:28 PM
sharp chisel, at the right angle will do a great job , wrong angle itll cut into the hull....i tried it on my first go it was relatively easy...yes i was nervous...but it saved an enormous amount of elbow grease...then use fairy or some other agent to wipe and clean smooth...
 
its not a popular choice i used acetone on acrylic spray, white spirit on oils and enamels....never had any issue with hull damage, i put the thinner on a cloth and used it adequately not to much it runs and drips etc....i also found where i may have had the accidental deeper gouge, the thinner helped rub and fill to a certain extent..
 
it worked for me, i may be critisised but ...hey ho
Title: Re: want to remove paint from fibreglass hull
Post by: scoop on March 04, 2013, 01:16:46 AM
Most of these oven cleaners are based on sodium hydroxide- probably better known as causitc soda. You can get that at a chemists, hardware store, or ebay etc. and mix your own solution.

Also handy for unblocking your drains. You do need to be very cautious using it though, as it can cause serious burns and respirtory problems if inhaled.
It's also excellent at dissolving aluminium parts, so make sure they are rinsed with plenty of clean water afterwards. The gas evolved during the cleaning process is Hydrogen so is best done in a well ventilated place or better still outside in a smoking free zone, H2 + Flame = Kaboom !
I'm surprised no one has mentioned good old T cut and elbow grease, much safer than Caustic, Acetone etc  :-))  Cheers Scoop
Title: Re: want to remove paint from fibreglass hull
Post by: Subculture on March 04, 2013, 10:39:38 AM
T-cut? Think you'd need to rub a lot of that on to clean off old paint, it's just a mild abrasive isn't it?
Title: Re: want to remove paint from fibreglass hull
Post by: sparkey on March 04, 2013, 03:34:16 PM
 %% Hi,lads be careful when using cellulose thinners as the fumes are very toxic,I would use it in the open air just to be safe. I learnt my lesson
years ago when I was spaying a motorcycle tank in a confind space ie the shed, the fumes got to me and I ended up in hospital with which
felt like the hangover from hell, it made me very ill for days.These days I don't any chemicals if it can be helped, elbow grease for me it might
take a little longer but safer,happy modelling everybody looking forward to the new season, Ray.       
Title: Re: want to remove paint from fibreglass hull
Post by: Stavros on March 04, 2013, 09:54:38 PM
Well Klunk you will have to bite the bullet and buy the proper stripper for grp
 
 
Dave
Title: Re: want to remove paint from fibreglass hull
Post by: Popeye on March 04, 2013, 10:48:15 PM
Well Klunk you will have to bite the bullet and buy the proper stripper for grp
 
 
Dave


Hi Klunk.


I made a total mess of one of my previous hulls which incorporated lots of plating and rivet detail - all of which had to be removed without damaging the gellcoat finish of the GRP hull.  I eventually discovered  Langlow's Saferstripper which worked perfectly.


It's a green viscous liquid which is applied with the aid of a small soft brush, Apply in small areas and allow 20 minutes or so for it to work its magic then remove gunge with ,in my case, the aid of a toothbrush. . Patience is the watchword as several applications may be needed to remove the most obstinate paint - irrespective of type - but it does not damage the gellcoat.

It saved my bacon and I still have what's left from my earlier boo boo just in case it's needed again (perish the thought!).


The following information  may now be out of date but you may strike lucky in respect of  a local source (mine came from a paint & building supplies outlet):-


Safer Stripper (1 litre plastic container).
Langlow Products
Chesham
Bucks,
01494 784866


Good luck
Title: Re: want to remove paint from fibreglass hull
Post by: Stavros on March 04, 2013, 10:58:09 PM
http://www.marinemegastore.com/product-LANGLOW-SAFER-STRIPPER-1LT-AQU_Q03203.htm (http://www.marinemegastore.com/product-LANGLOW-SAFER-STRIPPER-1LT-AQU_Q03203.htm)
 
 
Dave
Title: Re: want to remove paint from fibreglass hull
Post by: scoop on March 04, 2013, 11:51:54 PM
T-cut? Think you'd need to rub a lot of that on to clean off old paint, it's just a mild abrasive isn't it?
Depends on how much paint has got to come off the hull, you could always use a compound mop. If my race boats get pranged I use P38 to fill the holes gouges etc, sand back, prime, flat it off, top coat, T cut any overspray, quick polish, jobs done in half a day. I use Halfords car spray ....gives an excellent finish.
 
It may be the route to go Klunk.....bit of a rub down, prime and respray if you have a large area to cover.