Painting tips

mjray

Dirt Disciple
Sorry if there's a painting tips topic already but it didn't leap out of the search and then the search seemed to break, saying I can't use it at this time. Here's what I was told or wish I was told:
  • Paint isn't a quick option - mine needed two coats with a few hours each coat and a coat a day, assuming you can hang the bike so it can all be painted at once (no frame clamps or dropout mounts) and a week or so to harden - but it can produce an acceptable finish on an old frame you don't want to powdercoat.
  • Beware the paint directions. The one I used needs to be above 10 centigrade, so a room heater was needed.
  • Use a ventilated but not draughty workspace - messing up a frame because something blew onto it would be annoying.
  • Use at least four lamps positioned around the bike to see as much as possible even when standing in front of one lamp. A wrist-mounted LED torch can be useful. Head lamps aren't great as you could easily transfer paint to your head.
  • Paint roughly top to bottom - paint don't drip upwards - and back to front.
  • Large plates (chainguard or mech brackets) welded on are useful things to hold if you paint them last. Small welded-on things like cable stops and pump pegs mainly either create corners that are awkward to paint or gather paint that drips out later: don't trust them.
  • Paint pairs of things (stays, forks) together, painting the insides first. Paint the rear dropouts while standing behind the bike.
  • At a couple of points on the bike, you may need to join the coat - for example, it's hard to paint seat stays, top tube and seat tube all at once. The places where tubes join seem easier places to join the coat than the edges of the lugs. A bit too much paint on some tube joins (some seem hard to paint anyway, especially around the bottom bracket) seems better than filling the edge of a lug, especially if planning to highlight the lugs later.
  • Leave the paint can and brush in a safe position when moving other things (lamps or whatever) around.
So, what did I forget or not realise?
 
Yeah, good point: prepare the frame before painting it! Strip it or sand it, then clean it down, wipe it down and let it dry completely.
 
Re:

Really helpful, I like this kind of advice, though it mainly reminds me why painting a frame
is one of the aspects of a resto I'd probably never try myself :oops:
 
The painting is not as hard as you might think and you can get a really good finish. Its the steady hand for things like lug lining that make or break the job. You will need a paint pen. Going to try one of the touch up pens from Halfords next time . Try it on something else first. Also dont forget a mask for the paint mist.No good a well finished bike and clapped out lungs.Oh and make sure there is nothing else in the vicinity that you would rather not have overspray on. Not to be done anywhere near the car.Think first before you start and plan out where you are going to hang the frame when it is finished and by what means. Nothing worse than a panic mid job when you realise you have forgotten something.Once started its keep going.
Peter
 
I agree about thinking things through before you start. I left the frame hanging where I painted it because I was pretty sure it wouldn't get bumped before it was touch-dry.

I'm going to use a gold unipaint pen from a stationers to line the lugs, suggested on another forum. Sharpie is also suggested at http://www.cyclechat.net/threads/1940s- ... st-3477295 and at Lovely Bicycle, which says the important thing is that it's oil-based and will write on metal: http://lovelybike.blogspot.co.uk/2009/1 ... cycle.html

Actually, I brushed Rustoleum on because I know I can do it smoothly enough for my liking (and the bike in question isn't a classic) but I still wouldn't put anything nearby that you would be upset if it got splashed!
 
Did you note the comment further down on lovelybike that wd40 washed it off?I intend to use gold humbrol in a paint pen. Once its gone of its just the same as any other enamel and will stand washing and cleaning. I dont paint my best bikes but I enjoy doing the old ones I get.Adds a lot of satisfaction to the job.You cant really do much harm. If it needed painting and you make a complete mess of it then apart from the lost cost of the paint you are in no worse a state than when you started. It still needs painting
Peter
 
Yes, but it's not clear what pen that commenter used or if it was oil-based, is it? And I wouldn't let WD40 near a frame unless I was doing some pretty drastic cleaning/refurb afterwards.

Where are you getting gold humbrol from? Model-making shops?
 
Model shops have it and you can sometimes get it on e bay.The other thing to be careful of with gold pens is that long term they may not be colour stable.Gold colours can degrade to a green tinge.The inks are not really designed to be out in all weathers. might be o.k. might not.Go enamel and then you can forget it.
Peter
 
Re:

Interesting post .

I was talking to a fellow cyclist today who used an old metal cupboard with an electric fire in the bottom . He used to switch it on .
Close the doors and let the heat build up to required temperature then hang the frame on a hook inside to get a baked finish :shock: {Home made oven}
 

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