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Bob uk
Unregistered guest
Posted From: 94.197.122.77
Posted on Sunday, 10 August, 2014 - 08:09 am:   Edit PostDelete PostView Post/Check IP

After panel beating and welding comes paint.
Two types of Diy paint sprayer are suitable.

HVLP and HPLP.
High volume low pressure is the best for diy, it has a large air feed hose and a suction feed cup. HVLP makes a very good sprayer even better.
High pressure low volume, volume refers to volume of air not paint, is what professionals use in spray booths.
Check out Apollo Sprayers.

Piant must be thought of as a paint system including fillers used. For Diy there are only two choices enamel or cellulose.

Cellulose is the easiest.

To go bare metal is the best and the best way is a mechanical sand to bare metal and also the cheapest. It is a long hard slog of sipping dusty tea and wondering why.

However if the car is a daily driver and just a smart blemish free finish is required. Sand off till say two coats have been removed. Wet flat say a door and spray with your selected paint system. Leave for a day or so. If there is any reaction like pickling then either spray a barrier coat or sand back to bare metal. Barrier coat is a bit of a bodge invented for insurance companies to save money.

Places that must be bare metal are the bottom of the roof pillars on a lot of makes of cars. This area is usually lead loaded and prone to paint cracks.

Thick or lots of paint coats doesn't make a better job it can make shapes lose definition and cause panel gaps and shut lines to foul. Often there comes a time when a car has been resprayed so many times that the amount paint is cracking into crazy paving . This can happen quite soon after a respray over too many previous coats.

A sprayer will rub half a coat off and then add 3, if this happens say 5 Times in 40 years then the car will end up with 15 coats plus the original.

To learn how to check out paint spray stuff.

For those that have never sprayed paint get cans from shop and spray the say a fridge. This will give a feel for masking and spraying.

If you are preparing the car for a bodyshop which is a big money saver and I don't blame anybody If they do.
Body shops can spray the latest paint systems which are much superior to any paint the diyer can safely use.
Cellulose paint is disappearing slowly due to environmental concerns and soon diy car spraying will be effectively illegal.

(Message approved by david_gore)
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Jan Forrest
Grand Master
Username: got_one

Post Number: 603
Registered: 1-2008
Posted on Sunday, 10 August, 2014 - 08:25 pm:   Edit PostDelete PostView Post/Check IP

Even an amateur can get very good results from the use of 2-pack epoxy paints. The only problems are that they must only be used in an enclosed environment preferably with a filtered fresh air system and using an air fed mask. If you are using a decent size of compressor those items should be easy to set up, even if the expense may be a little excessive for just one car. Don't forget that you should always use some form of filter mask when spraying as overspray/backspray even from disposable spray cans can cause breathing problems!

As Bob implies: These 'paints' can often react poorly to older kinds of paints so it's usual to assume that they are going to, so you either go all the way back to bare metal or include a barrier coat between the two.

However in recent years there have been startling advances in the chemistry of water-based car paints. Quality of finish and durability have come along in 'leaps and bounds' such that there is hardly any detectible difference between any of them - water, petroleum or epoxy.
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Bob uk
Unregistered guest
Posted From: 94.197.122.93
Posted on Monday, 11 August, 2014 - 04:50 am:   Edit PostDelete PostView Post/Check IP

One of the features of HVLP is less overspray and 30% reduction of wasted paint
All paints when atomized including house emulsion is dangerous to breathe in.
I used a two pack enamel from Glasirite which was super shinny and very hard.
I sprayed a Range Rover Rosso Red and it really popped. I chose paints that can be misapplied and repaired easy when I have a bad hair day.
Those bonded screens propagate cracks sooner than soon.
I checked out water borne paints a while back and as of yet there isn't a way of spraying it with put a booth. Cellulose is going to be banned as soon as the paint tech guys come up with a safer diy safer paint. Can smell celly from 25 yards. And some do have real problems with the fumes. I don't but my brother gets breathless.

(Message approved by david_gore)
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chobled
Unregistered guest
Posted From: 77.195.79.76
Posted on Thursday, 14 August, 2014 - 07:10 pm:   Edit PostDelete PostView Post/Check IP

From curiosity!
Is it still easy to purchase Cellulosique paint in the UK. In France it is rather difficult too source.
Suppliers détails would be appreciated.
Kind regards.
Anton De Bloch.

(Message approved by david_gore)
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Bob uk
Unregistered guest
Posted From: 94.197.122.71
Posted on Friday, 15 August, 2014 - 08:54 am:   Edit PostDelete PostView Post/Check IP

www.carpaint.co.UK/4-cellulose.
€15 litre any colour
€12 litre acrylic clear coat.

Also many other suppliers in UK.

(Message approved by david_gore)
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chobled
Unregistered guest
Posted From: 77.195.79.76
Posted on Friday, 15 August, 2014 - 03:00 pm:   Edit PostDelete PostView Post/Check IP

Thank you for this information.
Kind regards.
Anton De Bloch

(Message approved by david_gore)

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