Steve,
Thanks for the comments. I too would prefer a standard RAL or BS code for paint but I have tried every one and none are close enough (for me at least) to my paint. I have two areas of very good original 1920 paint , one on the back of my 1920 tanks and the other on the inside half of the primary case. I have used these areas of original paint to match my paint exactly after spending weeks trying to match to standard colours or to paint chips from various paint manufacturers. In the end I had a custom batch mixed by Regional Paints in Leeds.
It is my belief that the paint used by all car and bike manufacturers in days gone by varied a bit from batch to batch and also year to year. You might not notice between two bikes built in the same month but if you took two made a couple of years apart I would not be surprised if they varied in shade slightly. Hence my comments about my paint being correct for my bike and year but couldn't comment on others.
A while ago you were very generous in sharing a sample of the Seaweed colour with me that is a great match for your original paint sample. However when compared to my 1920 paint it is quite far off which shows that even though the colour was called the same, Olive Green, over the course of 10 years or so has varied in shade quite a lot. See the picture below showing the Seaweed sample on top of my inner primary. The area immediately around the primary has been cleaned to reveal the original colour.
I think that the enamel finish can be reproduced but not so easily for most people. The Copal varnish is not so easy for most either, I have looked into it and most Copal varnishes available are mixtures of copal and other things. You can get copal from artists suppliers but it is a crazy price. The cost effective way, if I were to do it, would be to buy the raw copal and make it myself but it is dangerous as you have to dissolve the copal resin in mineral spirits all while heating it over a stove to reasonably high temperatures.
Like you say its hard to duplicate the original finish and for almost all people its not worth it as there are so many other alternatives.
John
Thanks for the comments. I too would prefer a standard RAL or BS code for paint but I have tried every one and none are close enough (for me at least) to my paint. I have two areas of very good original 1920 paint , one on the back of my 1920 tanks and the other on the inside half of the primary case. I have used these areas of original paint to match my paint exactly after spending weeks trying to match to standard colours or to paint chips from various paint manufacturers. In the end I had a custom batch mixed by Regional Paints in Leeds.
It is my belief that the paint used by all car and bike manufacturers in days gone by varied a bit from batch to batch and also year to year. You might not notice between two bikes built in the same month but if you took two made a couple of years apart I would not be surprised if they varied in shade slightly. Hence my comments about my paint being correct for my bike and year but couldn't comment on others.
A while ago you were very generous in sharing a sample of the Seaweed colour with me that is a great match for your original paint sample. However when compared to my 1920 paint it is quite far off which shows that even though the colour was called the same, Olive Green, over the course of 10 years or so has varied in shade quite a lot. See the picture below showing the Seaweed sample on top of my inner primary. The area immediately around the primary has been cleaned to reveal the original colour.
I think that the enamel finish can be reproduced but not so easily for most people. The Copal varnish is not so easy for most either, I have looked into it and most Copal varnishes available are mixtures of copal and other things. You can get copal from artists suppliers but it is a crazy price. The cost effective way, if I were to do it, would be to buy the raw copal and make it myself but it is dangerous as you have to dissolve the copal resin in mineral spirits all while heating it over a stove to reasonably high temperatures.
Like you say its hard to duplicate the original finish and for almost all people its not worth it as there are so many other alternatives.
John
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