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andym
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PostPosted: 14:39 - 14 Jan 2015    Post subject: Painting a bike Reply with quote
Probably over the next few months I'll be repairing my VFR fairings and then having it all repainted... So how much paint (roughly) will I need if I'm starting with a white primer then white paint on top?
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Just_James
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PostPosted: 14:56 - 14 Jan 2015    Post subject: Reply with quote
You won't need a lot of white basecoat over a white primer, a quarter litre should be plenty and leave enough for any future touch ups. If you're doing the entire bike including tank etc too then I'd probably get a half litre to be sure but I tend to buy more than I need anyway as it well get used on other stuff at some point.
Are you spraying it yourself? If not, the bodyshop will usually supply the paint anyway if they don't already have it.
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andym
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PostPosted: 15:28 - 14 Jan 2015    Post subject: Reply with quote
Just_James wrote:
Are you spraying it yourself? If not, the bodyshop will usually supply the paint anyway if they don't already have it.


There's a bodyshop next to the workshop in college and if I supply the paint then they will do the work for me.
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Just_James
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PostPosted: 16:16 - 14 Jan 2015    Post subject: Reply with quote
I see, very good of them Thumbs Up

I assumed you'd be doing it in 2k in which case you'd need the clear coat too if they're not using their own.
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BenR
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PostPosted: 18:36 - 14 Jan 2015    Post subject: Reply with quote
Just_James wrote:
You won't need a lot of white basecoat over a white primer, a quarter litre should be plenty and leave enough for any future touch ups. If you're doing the entire bike including tank etc too then I'd probably get a half litre to be sure but I tend to buy more than I need anyway as it well get used on other stuff at some point.
Are you spraying it yourself? If not, the bodyshop will usually supply the paint anyway if they don't already have it.



??? Shocked You reckon? I'd say you need at least 2 litres. Thumbs Up
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Just_James
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PostPosted: 19:01 - 14 Jan 2015    Post subject: Reply with quote
2 litres of white basecoat to cover white primer? Might use closer to 2 litres for a flat red or similar but not white on white. I'd definitely do a bike with a half litre Thumbs Up

But then I'm quite economical.... and tight Laughing
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BenR
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PostPosted: 21:38 - 14 Jan 2015    Post subject: Reply with quote
Well I used a litre (mixed) to spray my little wolf panels & I've yet to do the tank, hugger & bellypan & that's a little bike. Just because he's going white top coat over a white primer he'll still need at least 2 litres (mixed) to get a good coverage. White along with yellow & sky blue have notoriously shit coverage. If you're using a solid colour (i.e no lacquer) you'll need even more to get a couple of decent coats on.
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Just_James
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PostPosted: 23:44 - 14 Jan 2015    Post subject: Reply with quote
BenR wrote:
Well I used a litre (mixed) to spray my little wolf panels & I've yet to do the tank, hugger & bellypan & that's a little bike. Just because he's going white top coat over a white primer he'll still need at least 2 litres (mixed) to get a good coverage. White along with yellow & sky blue have notoriously shit coverage. If you're using a solid colour (i.e no lacquer) you'll need even more to get a couple of decent coats on.


When you say 'mixed' I assume you mean thinned or RFU? When I refer to base coat I mean a good quality unthinned base coat, not some fleabay RFU shite that's more thinners and binder than anything else.

A half litre of quality solvent base coat will go a very long way once thinned and applied correctly. On a white over white application only enough is required to achieve the true shade and cover any prepping marks (assuming all the prep' has been done to a good standard) which really doesn't take much.

With regards to using a 'non lacquer' approach such as cellulose or any other direct gloss paint, I'd strongly advise against it (unless you're looking to give the bike a quick tidy up to sell on) but yes you will need considerably more to achieve a half decent coverage and finish.

I'd say the best thing to do is speak to the guys who will be doing the work and ask them what type of paint they are used to using / wish to use and ask how much they feel would be required. Different painters have their own experience and techniques so to be sure - best ask the ones who will be doing it Thumbs Up
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BenR
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PostPosted: 01:18 - 15 Jan 2015    Post subject: Reply with quote
Just_James wrote:

When you say 'mixed' I assume you mean thinned or RFU? When I refer to base coat I mean a good quality unthinned base coat, not some fleabay RFU shite that's more thinners and binder than anything else.


RFU?? All base coats require thinners otherwise you'll get major orange peel if it even manages to get out of the gun not to mention you'd probably get adhesion problems as well. A good quality 2K base coat will usually require 50% thinners, some a little bit less. Water based base coats usually around 10% demin water. As I stated earlier whites are (oddly enough) one of the most difficult colours to cover especially in base coat form. A solid 2K gloss will cover better but need more why would you advise against using a 2K gloss? They're just as hard wearing as a base coat & lacquer system. 1/2 a litre of basecoat will only give 1 litre mixed & will not be anywhere near enough to do a whole respray on a VFR.
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Just_James
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PostPosted: 02:16 - 15 Jan 2015    Post subject: Reply with quote
BenR wrote:


RFU?? All base coats require thinners otherwise you'll get major orange peel if it even manages to get out of the gun not to mention you'd probably get adhesion problems as well.


RFU is 'ready for use' as a lot of paint suppliers particularly on fleabay and such sell it as a ready thinned product. Of course, it looks cheaper but you are getting an inferior product that's just been 'bulked out' rather than thinning it to your own requirements as a painter would do.

Yes, as I said, a quality base coat will need to be thinned for use obviously. This is not just about thinning for quantity but allows control of the product to allow for spraying as 'wet' or 'dry' as you wish etc.

BenR wrote:
A solid 2K gloss will cover better but need more why would you advise against using a 2K gloss? They're just as hard wearing as a base coat & lacquer system.


I'm not sure what you mean by a solid 2k gloss??... and I didn't advise against one Confused
I advised against a single pack paint such as cellulose or synthetic which are far inferior (on every level other than environent & kitten killageness) to a 2k and would only 'advise' to use in the in a diy environent without suitable extraction and air fed mask etc for isocyanates.
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andym
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PostPosted: 08:08 - 15 Jan 2015    Post subject: Reply with quote
Girls..... put the handbags down and step away from the keyboard Twisted Evil

I'll ask in college and post how much they say.

When I painted my GPz I bought 6 cans of black paint from ebay and I put about 4 coats on all the panels and used 5 cans, but when it came to the lacquer I used less than 1 for the whole bike (330 ml cans), I'm guessing there will be more or less the same surface area on the CBR so I'll find out if it will take 2 litres to paint that
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Old Thread Alert!

The last post was made 11 years, 28 days ago. Instead of replying here, would creating a new thread be more useful?
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