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+-- Thread: Shellac or lacquer? (/showthread.php?tid=7353148)
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Shellac or lacquer? - ®smpr_fi_mac® - 02-25-2020
I like using brush on shellac or spray lacquer but don't have enough experience to decide which would be best for this box. Carcass is sapele. Drawer faces are curly maple.
Which would you use? My main concern is making the curl on the maple pop.
RE: Shellac or lacquer? - Rob Young - 02-25-2020
On a scrap piece of the same material, saturate with black dye. Sand back until dye remains only in curl. Then use either the shellac or lacquer (you can tint both as needed to modulate how yellow you want the maple to become).
The black left behind will pop the grain.
If you don't want to experiment with the black dye, just go with nearly any oil finish on the maple (it will of course yellow a bit) then seal with shellac.
Blonde shellac by itself will accentuate the curl but not so strongly as either the dye or the oil.
Here's a bit better explanation from the late Charles Neil : Link
RE: Shellac or lacquer? - ®smpr_fi_mac® - 02-25-2020
Oh, that sounds interesting. Will Rit dye work?
RE: Shellac or lacquer? - Rob Young - 02-26-2020
(02-25-2020, 04:15 PM)®smpr_fi_mac® Wrote: Oh, that sounds interesting. Will Rit dye work?
Dunno. How much extra material do you have to experiment with...
RE: Shellac or lacquer? - ®smpr_fi_mac® - 02-26-2020
I've got plenty of small cut offs to play with. I'll pick some up tonight.
I'd never heard of this method. I'm intrigued.
RE: Shellac or lacquer? - jteneyck - 02-28-2020
(02-25-2020, 04:15 PM)®smpr_fi_mac® Wrote: Oh, that sounds interesting. Will Rit dye work?
I've used RIT dye on a couple of things. It worked well. RIT dyes aren't as color fast as something like Transtint, however, so I sprayed a UV absorbing clearcoat over it, GF's High Performance Poly.
John
RE: Shellac or lacquer? - ®smpr_fi_mac® - 03-04-2020
Good to know. Thanks.
RE: Shellac or lacquer? - Cooler - 03-10-2020
(02-28-2020, 03:52 PM)jteneyck Wrote: I've used RIT dye on a couple of things. It worked well. RIT dyes aren't as color fast as something like Transtint, however, so I sprayed a UV absorbing clearcoat over it, GF's High Performance Poly.I should note that seeing "UV" on a finish does not necessarily mean it is UV absorbing or UV resistant.
John
Sometimes it simply means "UV cured".
I bought some postcards once (10,000 cards) that were "UV coated". All that meant was that the coating was UV cured. They would fade in the sun.
UV finishes on kitchen cabinets are the same. They are UV cured, not UV resistant.
It could be very well that the finish you used was UV absorbing. I am only suggesting that you read the label carefully and make sure it says "UV absorbing". The use of "UV" without the adjective can mean almost anything. And "UV resistant", means that the finish will not break down in the presence of UV light; it may or may not protect the underlying color as it may be UV resistant without being UV absorbing.d
Here is RIT's comments:
https://www.ritdye.com/instructions/wood/
RE: Shellac or lacquer? - Cooler - 04-07-2020
(02-28-2020, 03:52 PM)jteneyck Wrote: I've used RIT dye on a couple of things. It worked well. RIT dyes aren't as color fast as something like Transtint, however, so I sprayed a UV absorbing clearcoat over it, GF's High Performance Poly.I just looked at the specs and they do not say anything about it being UV absorbing.
John
https://generalfinishes.com/wood-finishes-retail/water-based-topcoats-and-sanding-sealer/high-performance-polyurethane-water
A lot of finishes are called "UV XYZ Finish" but that only means that it cures in the presence of U.V. light.
RE: Shellac or lacquer? - jteneyck - 04-07-2020
(04-07-2020, 07:43 AM)Cooler Wrote: I just looked at the specs and they do not say anything about it being UV absorbing.
https://generalfinishes.com/wood-finishes-retail/water-based-topcoats-and-sanding-sealer/high-performance-polyurethane-water
A lot of finishes are called "UV XYZ Finish" but that only means that it cures in the presence of U.V. light.
There are a lot of things GF no longer says about their products. The UV system seems to be one of them. They also now say (or did last I checked) that you shouldn't use EnduroVar over shellac, but used to say it was ok as long as the shellac was dewaxed.
Sherwin Williams KemAqua Plus contains a dual UV package, too. They even still say so: Link
As for UV cured, those are industrial products, not something you and I normally could buy.
John