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Post by essexman on Jul 26, 2013 22:17:26 GMT 1
Should you "flat" metallic base coat before applying lacquer? I've just done a small repair on a door bottom and I am pleased with the results other than after a couple of coats of lacquer there is very little depth of shine. Wondering if I should have flatted the base coat although I never have before. Shall I just wet sand with some 1500 or is there something seriously wrong and re-finish?
Cheers
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Post by puremongrel on Jul 27, 2013 7:38:48 GMT 1
it could be down to lacquer ,if its a spraycan as they are more solvent & less lacquer
if you have used waterbase base coat & its not dried out correctly
applying lacq to damp base will also matt lacquer
normally you can apply lacq up to 6 / 8 hours after base coat
but if you left it a couple of days then
i would very lightly sand base before lacquering
hope thus helps in some way
pm
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Post by essexman on Jul 27, 2013 10:24:27 GMT 1
I didnt think you flatted metallic/pearlescent. Only if there is a problem with the base but then you put on a final coat over the flatted paint? I had no problems and the finish and colour match are fine. Just dull. How long should I leave the lacquer before wet sanding?
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Post by puremongrel on Jul 27, 2013 11:18:32 GMT 1
yes you can flat base
i normally use grey scotch brite or 800 /1200 dry sand no water
as 2 pack lacquer sticks like the proverbial "shit to an army blanket "
i reckon you need to re look at your lacquer if it was me
i would be tempted to flat laacq 1500 or similar
and retry the lacq
or flat lacq & polish lightly
have you checked air line for moisture ?
hope you get it sorted
pm
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Post by Anna Rack on Jul 27, 2013 18:54:15 GMT 1
Normally lacquer would be applied quite soon, within an hour or so, so the lacquer sticks well to the slightly tacky base coat.
In your case I would lightly sand the lacquer coat you have already applied with a scotchbrite or fine w&d and give it a couple more coats.
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Post by Rhubarb on Jul 28, 2013 0:36:21 GMT 1
Are you using a compressor or rattle cans?
I find Upol lacquer(rattle can) gives the best results, almost gun finish.
I normally bung a coat of lacquer on within 5 - 10 mins of the last basecoat and a second coat 10mins later
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Post by essexman on Jul 28, 2013 9:46:31 GMT 1
No, just "rattle cans". The problem I usually have with lacquer is 'too much shine' instead of not enough. Oh, and runs  I've got a few more bits to be done and I'm not sure if it's materials or technique that's the problem. Dont fancy wasting another "8" coats of lacquer trying to get a shine again!  |
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Post by Rhubarb on Jul 28, 2013 22:44:27 GMT 1
No, just "rattle cans". The problem I usually have with lacquer is 'too much shine' instead of not enough. Oh, and runs I've got a few more bits to be done and I'm not sure if it's materials or technique that's the problem. Dont fancy wasting another "8" coats of lacquer trying to get a shine again! What make are you using? I find Halfords basecoats are ok, but there lacquer is shite.. There made up to match cans are a great colour match but too watery! So I use there off the shelf base coats or from the main dealer, and Upol lacquer  Runs, painting too slow and laying coats on too quick after the last coat. |
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Post by Deleted on Jul 29, 2013 11:28:08 GMT 1
Im'e not a painter but have worked in places that do paintwork and they all applied base fairly dry and the clear was always applied wet , mind you they wern't using rattle cans  |
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Post by essexman on Jul 29, 2013 14:13:32 GMT 1
No, just "rattle cans". The problem I usually have with lacquer is 'too much shine' instead of not enough. Oh, and runs I've got a few more bits to be done and I'm not sure if it's materials or technique that's the problem. Dont fancy wasting another "8" coats of lacquer trying to get a shine again! What make are you using? I find Halfords basecoats are ok, but there lacquer is shite.. There made up to match cans are a great colour match but too watery! So I use there off the shelf base coats or from the main dealer, and Upol lacquer Runs, painting too slow and laying coats on too quick after the last coat. I always use "hycote" spray if I can get it, but Maccess didnt have the colour in stock, and Hycote themselves wanted £15+postage for a tin so I used a local trade paint supplier for the spray cans. Ive heard Halfords paint is much better than it used to be though; always was too watery. The car has lots of little bits on every corner so there is not a large area to be finished, but it adds up. With a Ford you can pick up wings in useable condition for £25/30, compared to the materials cost for paint/lacquer and consumables it adds up. Sods law, just as I had the paint mixed I went on Ebay that evening and found 2 wings in colour for £40 the pair!  |
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Post by essexman on Jul 29, 2013 14:17:15 GMT 1
No, just "rattle cans". The problem I usually have with lacquer is 'too much shine' instead of not enough. Oh, and runs I've got a few more bits to be done and I'm not sure if it's materials or technique that's the problem. Dont fancy wasting another "8" coats of lacquer trying to get a shine again! What make are you using? I find Halfords basecoats are ok, but there lacquer is shite.. There made up to match cans are a great colour match but too watery! So I use there off the shelf base coats or from the main dealer, and Upol lacquer Runs, painting too slow and laying coats on too quick after the last coat. I've been told that Upol make a product called "topstop"; its supposed to be very good |
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I've got a few more bits to be done and I'm not sure if it's materials or technique that's the problem. Dont fancy wasting another "8" coats of lacquer trying to get a shine again! 
