* use less air and fluid pressure.
BUBBLING: For the first time ever, the veneer bubbled and the customer is complaining. There is a difference, but some suppliers use the terms interchangeably.
The lacquer will over power the cause of the hole and allow subsequent sprayed coats to flow over the holes. * thin down the lacquer (usually not more than 25% unless specifically recommended by the manufacturer). * Spray in an environment free from gusts or excessive air flow. * Dusty surface or other surface contamination, poorly cleaned or prepared just prior to spraying. Also, if you spray a lacquer finish, make sure you use a water based contact cement.
and it is suggested that customers confirm results before use. Ignore the manufacturers recommendation to use their product full-strength.
* Install a moisture trap and a moisture filter as close to the spray gun as possible.
Too heavy of a film build-up of lacquer at one time. Wood veneer and especially maple veneer moves a lot and the J roller does not give you enough PSI on that type of glue line. end: Lacquer Trouble Shooting -- v. 1/5/05, See also: * Moisture trapped in the surface of the lacquer from the spray equipment or atmosphere.
POOR ADHESION & New Lacquer Cracking off of corners. Corrections:
The only effect they will have is that you see them. Undried oil based finishing materials, and/or incompletely cured oil based Question
* Keep silicones away from all wood & all woodworking tools and machinery. Solvent-Boil visible on a paint surface .
* Too much air pressure or bounce-back from spraying too close to the surface; Cause: Too heavy of a film build-up of lacquer at one time. Out of curiosity, is the veneer backed with an actual phenolic regrind or a polyback backer? You will need some way to put pressure on the bubbles to flatten them until the adhesive sets. * To much air pressure to pump and air assist can cause tiny bubbles Wood Finish Supply stains trapped under the surface of the lacquer.
FISH-EYES, or CRATERING: Cause: ORANGEPEEL:
Corrections: Cause: Causes:
* Spray at 8 - 12 inches from the surface. Wood Finish Supply We accept no responsibility for the results obtained by the use of this product. air assist should remain the same. The thinner will emulsify the surface and the defects should disappear when it hardens again. --- Finish lacks durability and rubs, chips, or flakes off easily.
The thicker your veneer, the less likely you'll get bubbles. I'm in Texas, where the humidity is always bad, but have never had this problem before.
Forum Responses * Air pressure to pump should be 40 lbs.
Film looks whitish, cloudy, or milky.
If this proves to be the case you might have to re-veneer. * After paint and finish removal or stripping clean surface thoroughly with
Also, FYI when applying the veneer with this method - you should stay away from using a J roller to apply the pressure. Corrections: * Cut back fluid and air pressure.
The film looks as if someone threw sand into the lacquer film.
I'm using an airless spray rig with a fine finish tip. laboratory testing and is believed to be accurate. Spray a wet coat of pure lacquer thinner on a surface that has cracks, orange peel or roughness. * Maintain wood surfaces with silicone & oil free maintenance products. * Add Star (TM) FLASH-OFF CONTROL SOLVENT to your lacquer.
Cause: This might slightly alter your approach to your fix.
* Spray lighter coats;
If you didn't seal the wood and now have pinholes you may be able to drop fill them with unthinned lacquer.
* Extend Dry Times of oil based products in cold or humid conditions. Unless otherwise agreed in writing we sell this product without warranty and our
Runs and drips of lacquer that collect by gravity in thick ridges. Corrections:
A veneer that moves a lot will bubble if there is a weak spot in the glue line.
Causes: Use of Lacquer Retarder & Flash-Off Control Solvent
Many thin coats is always better than fewer, thicker coats.
* Reduce air pressure; and increase fluid pressure; and reduce film build up. * Add Star (TM) SIL-FLO, as directed on container, to lacquer and sanding sealer. (follow retarder label directions) . BLISTERS: It’s usually not a problem with shellac and solvent-based lacquers. Nine times out of 10, though, it is the contact cement. Causes: Dust Collection, Safety and Plant Operation, Job Opportunities and Woodworking Services, "Solvent pop" may be causing bubbling in a lacquer coat. Corrections: * Add Star (TM) BLENCO REDUCER to oil based finishing materials such as * Bleed traps on air lines, bleed compressor tank completely, * To much air pressure can cause entrapment of air bubbles in the lacquer film.
* Close doors, - heat rooms, - heat objects being sprayed.
* thin down lacquer;
* Add BLUSH RETARDER to sanding sealer and lacquer as needed
and it is suggested that customers confirm results before use.
Surface looks like the peel of an orange, or a miniature topographic map. Surface looks as if the lacquer boiled and remained grainy.
* Clean surfaces thoroughly with naphtha (only a partial help) . The information presented here is based upon carefully conducted I used this brand lacquer before and never had a problem.
Cause:
There can be a number of causes, from spraying too heavy, lacquer not properly thinned for the type of spraying, HVLP pot pressure too high, the list goes on. From contributor B: Roughness or sometimes white looking fuzz stuck in the finish surface. From contributor S: The operative word here is phenolic.
(Cabinetmaking Forum) Make sure you put a cloth in between the iron and cabinetry. The thicker your veneer, the less likely you'll get bubbles.
or spraying into blind corners and cubby holes, as in bookshelves or desks. However, results cannot be guaranteed * Spray gun too far away from surface.
If so, it's likely the solvent coming out.