Valtec conversion lacquer is cracking

Opticlear 275 is supplied at a ready to spray viscosity. Cardinal is super durable, and if you are just learning, you might as well learn how to finish with a good product, as every lacquer i have used. Is there another finish that is the precat cab acrylic lacquer. Universal flattening paste universal retarder urethane reducer valtec ultra catalyst waterborne retarder zenith waterborne conversion varnish. Add an optional catalyst, and it outperforms many conversion varnish products. This will fill the gaps but it will always be slightly visible. Conversion varnish is a catalyzed coating which is very hard and durable. Valtec ultra conversion lacquer richelieu hardware. Conversion varnish advantages over lacquer youtube. Highvolume, lowpressure hvlp spray equipment proves best for application because it greatly reduces bounceback and overspray compared with conventional highpressure spray guns. As humidity rises the wood will swell and as it falls it will contract. This product has been formulated to meet 275 gl voc regulations.

As the name implies, the precat already has a catalyst mixed into it and since the catalyst is rather weak, it has a pot life in the range of months. Cracks in lacquer usually flow out when you respray them. Spot and fix the most vexing problems woodshop news. A conversion varnish is a highend solids, twopart postcatalyzed lacquer, which means a hardener must be mixed with this product for the application. It is a fast drying, easy to apply sealer with excellent clarity and sanding properties. Conversion finishes are typically sprayed on in a manner similar to that of nitrocellulose lacquer. The lacquer is too weak for the epoxy primer to achieve its desired traits. Conversion varnish advantages over lacquer this video answers the question what is the difference between a conversion varnish and a lacquer. Thinner and faster drying crackle coats result in smaller cracks and islands. Question i am using a satin mohawk dura coat precat lacquer on a wall unit. Em7000hbl water based acrylic lacquer is an ultra clear, nonyellowing water based acrylic lacquer that utilizes advanced copolymer resins and hapsfree solvent technologies to provide a unique, selfleveling clear coat designed for custom and commercial applications. Recently, the doctor has found lacquer cracks in my eyes. Kitchen cabinetry finishes 101 expert kitchen designs. Thats why these products fail around dishwashers, where steam comes out, and in the bathroom, where water splashes on cabinets.

Hgh hardware supply is a wholesale and retail distributor of cabinet hardware and accessories, cabinet doors and drawers, coatings and finishing products, decorative knobs and pulls, and more. There are other considerations before jumping on the conversion varnish bandwagon. Conversion varnish and lacquer finishes both have their advantages and disadvantages. It both looks bad and spells trouble when the lacquer finish on your wood furniture gets damaged. Someone gave me a quart of the seagraves to try, but i have not yet. A properly matched spray gun needle, nozzle, and spray cap in good working order. Varnishes, repairing varnishes conversion finishes work where lacquer products fail because lacquer products dont have chemical resistance or water resistance. A catalyzed lacquer is a coating that dries by evaporation, acting very much like a straight lacquer defined above with no chemical curing or crosslinking and then cures by the reaction initiated by the catalyst. Em8000cv provides the rich color tones and durability associated with solvent based coatings in a waterreducible, ultra. Products change rapidly, and may be available even if not listed online. When the finish chips, it can show discolored material underneath, and if it gets gouged all the way to the wood, moisture and debris can enter and cause more permanent damage. Megavar plus highsolids water white conversion varnish 1m. Cic coatings is the brand of conversion varnish being used, im very fond of this this particular product as it has been specially formulated to be applied right out of the can with out thinning or retarding, it lays out incredibly smooth and dries quickly. When i was first introduced to nitrocellulose lacquer and spray finishing.

The most common precatalyzed finishes are precat lacquer, vinyl and occasionally a conversion varnish. The main differences are that the film builds quicker and the time between coats is shorter. Precat lacquer basics a firsttimer gets tips on the fundamentals for success with precatalyzed lacquer. While it is not our practice to spray anything over the pigmented lacquer. Theres a specialty finish called crackle lacquer thats designed to. Catalyzed lacquers further shifted the definition of lacquer.

Lacquer finishing trouble shooting guide wood finish supply. To fix, sand out and apply another coat using the proper lacquer thinner. Every piece of real wood furniture from countryside is finished with a postcatalyst conversion varnish. Wood coatings 101 valspar wood pages 1 26 text version. Em7000hbl is an ultra low voc ulvoc alternative away from nitrocellulose lacquers and solvent based conversion varnishes. Sherwinwilliams is a leading manufacturer of industrial coatings with a proven history of durability, color, innovation, and service.

Mar 26, 2014 lastly, todays conversion varnishes can have a pot life anywhere from 8 hrs to 3 weeks. With excellent mar, water, solvent and general chemical resistance, valtec is ideal for cabinets, furniture, and other interior wood surfaces. For kitchen cabinetry, there are essentially four kinds of chemical finishes, from least to most superior in quality nc and precatalyzed lacquers, post catalyzed conversion varnishes, and polyurethanes. Discussion in the hokey ass message board started by fat ass whitewalls, jul 17, 2015.

At that point i was just looking to create higher quality, professional finishes and brushing paint on or rolling wasnt going to. That the lacquer was sticky and peeling off is suspect and you would have to clean that. Emtech em8000cv wb conversion varnish target coatings. Em8000cv provides the rich color tones and durability associated with solvent based coatings in a waterreducible, ultralow voc, hapsfree coatings system. Other lacquer postcatalyst lacquer is where the userprofessional painter adds in the catalyst at their shop before using it. Conversion varnish application issues june 29, 2016 acid finish flexner the finishing store varnish woodfinishing woodwork woodworking conversion varnish, also called catalyzed varnish, is the most protective and durable finish commonly available to amateurs and small shops. Precat lacquers become the new standard woodshop news. You owe it to yourself and your company to give the varicure line a try. Apply this paste into the cracks and gently smooth it down. Pot life is measured from the time you add the catalyst to the material until the product is no longer usable for spraying. Conversion varnish application issues thefinishingstore. Mar 12, 20 veneer checking is a common occurrence in woodworking. Valtec ultra conversion lacquer is a cutting edge, high performance coating, built on a unique resin backbone that offers performance of a traditional postcatalyzed product, without the challenges of catalyzing in a shop environment. Just a few ounces over can screw it all up in the future.

Water clear in the can, it resists yellowing due to heat and uva. Opticlear 275 is a onecomponent precatalyzed lacquer. Apr 01, 2005 if this is the case you can be cracking the liquid paint or lacquer without affecting the powder coating, under certain mechanical and sometimes thermal conditions. Choose a lacquer repair kit which contains the substances that you can use to fill the cracks in the lacquer. Megavar catalyzed clear vinyl sealer is a versitile, sanding sealer offering numerous beneifits for the professional woodworker. Cracks in lacquer after powder coating products finishing. They offer excellent mar, solvent, chemical and moisture. I have a problem with refinishing a old radio cabinet. Post cat lacquer vs conversion varnish lets talk shopbot. Em8000cv wb conversion varnish represents stateofthe art formulating by utilizing our exclusive hybrid emulsion technologies that incorporate oilmodified resins and acrylic copolymers into a precatalyzed one part package. Conversion varnishs elasticity will help prevent cracking in your finish.

A single recoat may be enough to heal some cracking. Aug 14, 2011 by mac simmons coatings like conversion varnishes are popular, but require caution when used, for safety and to obtain good results. They have used frazee stain a dark espresso colorand valpro valtec. All products general industrial coatings sherwinwilliams. Valtec ultra conversion lacquer is a high performance, postcatalyzed lacquer formulated for use on kitchen cabinets, furniture, or anywhere a tough, durable coating is needed. I have wanted to try a conversion varnish being told that they are better in. Its a kit that has 1500 grit all the way up to 12,000 grit, and it works wonders. These cracks all run with the grain of the wood and appears as the veneer is cracking. Anyone who has to apply veneer or use veneered panels certainly understands what an unpleasant event this can be. Blend new lacquer into old lacquer with flash coats youtube. Lacquer cracks are present in high myopia and can lead to choroidal neovascularisation and macular haemorrhage, which in turn can cause central visual loss but it is not very common. Veneer checking is a common occurrence in woodworking. Answer catalyzed conversion varnish is the most durable finish available for wood it will resist moisture and damage from almost all household chemicals even nail polish remover will not damage the product unlike a lacquer product which is softer and more susceptible to moisture damage this product will last years.

It is a very dense finish, with molecules that bond to each other in such a way as to prevent penetration by water and chemicals for up to 2 12 times longer than standard lacquer. Megavar plus highsolids ww conversion varnish is designed for the woodworker who demands maximum performance in a high build clear finish. Valtec precatalyzed lacquers are premium quality finishes formulated for excellent durability and ease of use. A lacquer finish is more brittle and prone to cracks than varnish or polyurethane, but the good news is that the cracks are repairable. Compressor in good working order and drained once or twice daily and pressure regulator controls, and moisture trap installed in the air line as close. Finishing failures and what to do woodfinishers weblog. Higher catalyst levels may cause cracking over time. Tips for using super coatings woodworking network skip. This is the most durable finish available for use on fine hardwoods. Additional information cautions sherwood pigmented conversion varnish must be catalyzed 3% with kemvar catalyst v66v21 for cure. Providing a good blend of process ease, performance, and appearance, this topcoat has a. Opticlear 275 demonstrates very good moisture, household chemical and mar resistance.

Conversion varnish is a postcatalyzed coating with good spraying. We are a jobshop for finishing wood and are having a problem with the varnish cracking. Now that you have a clean and scratch free finish you can concentrate on filling the cracks. These coatings are technical and this videos purpose is to give a general summary comparison. Could be a conversion varnish or even a precat lacquer. Conversion varnish requires greater skill in spraying, too thick of a finish can crack. Items subject to change without notice, including stock status and availability. If this is the case you can be cracking the liquid paint or lacquer without affecting the powder coating, under certain mechanical and sometimes thermal conditions. Valspars valtec tm selfseal precatalyzed selfseal lacquers are premium quality precatalyzed lacquer finishes formulated to offer excellent durability combined with outstanding ease of use.

Precatalyzed lacquer show down woodfinishers weblog. At rock creek furniture we use valtec ultra conversion lacquer, by v alspar. Where conversion varnish really shines, however, is in the overall durability of the finished product. Sep 01, 2017 a catalyzed lacquer is a coating that dries by evaporation, acting very much like a straight lacquer defined above with no chemical curing or crosslinking and then cures by the reaction initiated by the catalyst.

Sep 29, 2017 precatalyzed lacquer is very a very durable product and what makes it different from otherregular lacquer is that it has a catalyst or hardener added into in when you purchase it. Cardinal is the best lacquer i have used, though i have not used any of the other instrument lacquers. By mac simmons coatings like conversion varnishes are popular, but require caution when used, for safety and to obtain good results. Troubleshooting cracking precat precatalyzed finishes can have problems with brittle failure, cracking, and crazing especially some of the early formulations. Valtec ultra conversion lacquer 30% solids selfsealing catalyzed lacquer approaches the durability of a conversion varnish in a precatalyzed form catalyzed at the distributor6 month shelf life once catalyzed for any application where higher performance properties are. If a conversion varnish goes beyond the specified pot life, it becomes gellike and can no longer be sprayed. With excellent mar, water, solvent and general chemical resistance, valtec is ideal for cabinets, furniture. The lacquer top coat dried and sealed in the gases from the primers trying to escape during the normal curing process. Theres a specialty finish called crackle lacquer thats designed to produce cracks for the visual effect. If this is your problem, simply select another type of liquid paint or lacquer with better mechanical properties, and the problem will go away. Its going to be applied on mahogany plywood and hardwood with a wipeon mahogany stain. It will resist moisture and damage from common household items, and unlike a less costly lacquer based product, which is softer and more susceptible to moisture damage a. Troubleshooting finish cracking checking on veneer heres an extended detailed discussion of finish cracks that follow wood veneer grain patterns.

Is it wood movement, a veneer adhesion issue, a finish formula problem, or a finish application problem. When i first started dabbling in spraying furniture in january 2015 i never expected to end up here. Some conversion finishes like conversion varnish cure more slowly so be careful of runs and sags and allow more time between successive coats. The sherwood cabacrylic lacquer doesnt appear to be a precat lacquer no mention of catalyst on their web site. Repairing cracked lacquer varnish on doors home guides. Repairing cracked lacquer varnish on doors home guides sf. Jun 02, 2008 the sherwood acrylic conversion coating appears to be precat, but is it a conversion varnish or a lacquer. Lacquer works best as a spray finish, applied to dry wood finishsanded to at least 220 grit. As for the sanding, i would go ahead and knock the orange peel off with 320 grit, then spray your second coat.

We have been spraying a post catalyzed lacquer john e goudeys. The crackling could have happened if you over catalyzed the conversion varnish. This coating has a long pot life once catalyzed 6 months and is supplied ready to spray with no further reduction needed. Jun 24, 2010 a conversion varnish is a highend solids, twopart postcatalyzed lacquer, which means a hardener must be mixed with this product for the application. If this is your problem, simply select another type of liquid paint or lacquer with better mechanical properties, and. This discussion will focus on lacquers and related products used for wood finishing. It simulates the look of old paint, but a clear coat is used over the crackle layer to protect it and the substrate. Description additional information product enquiry description. The cracking is on oak veneer surfaces only, not on solid stock.

After dan repaired a crack in a gibson acoustic guitar the finish didnt look to good. Lastly, todays conversion varnishes can have a pot life anywhere from 8 hrs to 3 weeks. Dan teaches you how to blend new lacquer with old lacquer. Apr 12, 2011 conversion varnish is a catalyzed coating which is very hard and durable. The solvents in the second coat of lacquer will liquefy the coat beneath it, which is why you cant put 5 or 6 coats of lacquer on.

They are fast drying and easy to apply with excellent clarity and sanding properties. Valtec self seal precatalyzed lacquers680 voc technical. Summary of common finishes conventional precatalyzed postcatalyzed conversion lacquer lacquer lacquer varnishvalspar luster lac valpro precat, valtec ultra conversion valpro conversionproduct professional, luster valtec precatalyzed lacquer varnish, valguard lac premium lacquer conversion varnishtarget small to medium sizecustomer painting. Color choice color matching and finishdesign program. Always test a glaze specially in a converting or catalyzed system for suitability. They are fast drying, offer excellent clarity and provide for enhanced uv protection. Most came to the shop with original finish cracking off but remeber they. Checking is a mild form of cracking and doesnt go all the way through the finish. Conversion varnishes, repairing damage to varnishes. Then cleaned the wood with a 5050 mix of lacquer thinner and denatured alcohol. There is the increased possibility of cracking of the film with material used past its. Painting furniture with precatalyzed lacquer the weathered.