Any ideas on how to prevent or minimize this?— Quality VAKuum Products, Inc. offers vacuum veneering bags in 4 different styles: 20 Mil and 30 Mil Vinyl, and 20 and 30 Mil Polyurethane. Remember that the glue-up should not remain in the bag longer than an hour when using cold press veneer glue, as it needs exposure to air for the glue to dry properly. Build your own vacuum press and save big bucks! What we used to seal up the bags was a sticky play-do like material. Guide to Membrane -vs- Vacuum Presses. Adhesive application systems, Vacuum tables, Hydraulic presses Making the change from a manuel process to a fully automatic system can be a very big step. A wide variety of vacuum press glue options are available to you, such as other adhesives. Owain Harris replies: It’s possible that you are using too much glue. It is also the recommended glue by the veneering and laminating industry. The panel, with dried adhesive is then covered with a PVC foil and placed in a membrane or vacuum press which heats the foil, applies vacuum for decompression, applies pressure and reactivates the glue line. Also, keeping the panel under vacuum for too long with a water-based glue can cause mold spores to grow, producing unsightly stains. Figured wood in particular can be a real problem with bleed through as there is essentially exposed end-grain in places that just soaks up the glue. Clamp time for PPR is 5 hours. It is designed to make the process of vacuum pressing even faster and easier. Marc, I went to a school that taught us how to vacuum bag composites like fiber glass, and other materials. It's rigid glue line minimizes spring back. Depending on what you are trying to do, you might try Unibond 800, a two part adhesive which has a really hard glue-line, and a long open time to allow you to work with it. This is a thin watery glue thats super strong and almost invisible! works great with vacuum press. ... Our patented “Thin Air Press” system is a safe and easy-to-use manual vacuum press system for wood bending projects. Once smoothed to the surface of the weave, the cloth will also help prevent the epoxy from being drawn into any wrinkles in the vacuum bag. Roll glue out, ensuring you have put an even coat over the entire surface leaving no dry spots. MVP 300 The MVP 300 membrane press is perfect for the pressing of veneer panels, curved workpieces, laminates and similar materials. Each press comes complete with automatic temperature control, 375 watt infra-red heaters, single or double tray operation, Busch vacuum pump, interior fan cooling, double ribbed tray gasket for an airtight seal, pneumatic tray cylinder/support, PLC for storage and operation of program parameters, and a soft-touch HMI control panel. Shop-cut Veneers. Heavy Duty Veneer Vacuum Press Bag 48” x 70” ... (14) 14 product ratings - VENEER PRESS VISE GLUE CLAMP SCREW WOODWORKING WOOD GLUING FRAME PRESSURE NEW. My design is an upside down version of Joe's frame press with a few changes/additions inspired by the commercial flip-top frame presses… A moulded and sometimes routed MDF core is sprayed with a polyurethane dispersion adhesive and allowed to dry. Assembly glue for furniture, cabinets, and general joinery. Personally I've never understood the need for Cold Press Glue as Titebond 1 works so well. If you are still having a problem, you could try using the original two-part Unibond 800 with a blocking additive that is designed specifically to prevent bleed through in figure woods. It takes a lot of scaping to remove the glue. Laminating curved panels and bent laminations. Any ideas on how to prevent or minimize this?— Steve Colello. We even used a play-do press to form it into long strings. It allowed us to change the size of the area to be vacuumed. I will typically make sure to get it a little thicker around the edges just to be safe. I apply the glue to just the substrate using an adhesive roller that applies the glue in a thin layer. I would consider using either Titebond I or better yet, Unibond One, which is a one part PVA glue especially formulated for veneering and lamination. This press answers the demand from our customers for a top loading vacuum press with easy access. Other glues cure by water or solvent migrating away from the joint, VAK-Bond 2000 veneering glue cures by a chemical reaction for a rigid and high water and heat resistant glue line. If you cover a panel smaller than 24×24" with a single piece of veneer, yellow woodworking glue works well. 45min – 2 hrs depending on wood species, room temp and humidity. Surface both faces to be glued, apply a coating of urea resin to one face (5 mil), assemble and slide into the bag. These incredibly resilient laminating bags are ideal for commercial and industrial vacuum pressing. This blocks up the pores that allow the glue to travel from the glue side to the face side. In both of these, they are formulated to not bleed through, but occasionally they do, in which case you can use a blocking additive. Or pony up a bit of cash and buy a small vacuum bag and used pump and use Titebond 1 - easier and faster. I've been searching for a glue with a long open time for quite some time. Enviormentally friendly – No harmful vapors. Eliminates bleed through – Will stop bleed through on most unbacked commercially sliced veneer. Do not use when temperature, glue or materials are below 50°F. Perfect Score Technologies, LLC is a dominate provider of Automatic Glass Cutting and Processing equipment for IG (Insulated Glass) , glass fabricators and glazing professionalsPerfect Score Technologies is a low cost USA provider of high performance computer controlled (CNC) glass cutting systems, abrasive & water jet cutting machines, insulated window assembly machines and glass … Richard Oedel replies: Use a different glue, and a blocking additive. It’s an easy mistake to make. The principle of the working process is that vacuum builds up below the rubber membrane which then forms itself exactly around the workpiece providing the exact amount of pressure needed to bond the material on to the workpiece. Section 1: Mounting Equipment (Note: newest listings appear on latter pages) #123- - Rotary Press and Glue Machines #124- - Potdevin / Assorted Gluers and Rotary Presses #114 - Potdevin Gluers and Rotary Presses #101- - Miscellaneous and Accessories #105- - Cold Vacuum Presses #107- - Corona Vacuum Heat Presses #118- - Dry Mount Presses #119- - Dry Mount Presses #122- - Dry Mount Presses Hide glue can not be used in a vacuum press unless the appropriate salt or urea is added. Vacuum pressing should only be used for veneers up to 1/16 inch in thickness. Titebond Cold Press for HPL is specifically designed for laminating flexible materials and is not suited for other types of assembly applications. A small cabinet job, where a single sheet of figured veneer plywood would have cost me more than $400, motivated me to build my first flip-top vacuum press. Q.V.P. Use VAK-Bond 2000 veneering glue with 20-30 minutes of open time. White and dark brown tints are availible for extremely blond woods as well as extra dark ones – One 8 oz. The press is easy to use; you glue and lay up the project, sheathe it with the breather netting, place all within the vinyl bag, seal the open end of the bag with the butyl rubber tape, then suck the air from the bag using the hand pump attached to the one-way valve. Unused glue can be returned to container. Less with heat. Extra hard glue line – Minimizes crazing and cold creep. The most demanding woodworkers will want to consider the VS polyurethane vacuum bags. Or use UnibondOne which is a one-part glue that works well. PVA High Performance Wood Adhesive – A high solids poly vinyl acetate, water base, cross-linking Type II water resistant glue that has an exceptionally rigid glue line. No mixing – Use straight from the bottle. I can glue large … Longer open work time – extended open time required for most panel work. I use a fuzzy an adhesive applicator roller from Wooster which you can buy at Home Depot. It spreads the perfect amount of glue but it works best if you roll it onto both surfaces. I buy 2' wide nylon bags by the foot (as long as you need). I find that the waterproof Titebonds II & III are a little less viscous than the original and therefore more prone to bleed through. It is not a perfect solution, but it works. A vacuum bag will give the most uniform pressure. Additionally, a vacuum press actually draws air out of the cells of the wood, which is replaced by adhesive. bottle of tint will color a full 5 gallon pail at full strength. But first make sure you are not putting too much glue on the surfaces. In addition to building furniture and cabinets for 20 years, Keil has written for leading woodworking publications, served as a technical consultant to woodworking facilities, and taught veneering classes in the U.S. and abroad. I've used Titebond's hyde glue but often its to thick. Free shipping. Website maintained by DesignME Creative Group. The vacuum pressing “Bag” system which completely envelops the woodwork and the vacuum press table “Frame” system with a hinged lid that drops down over the wood panel being pressed. If you want to use hide glue you can do it with old brown glue (room temp hide glue) in a press (either vacuum or a bunch of clamps). Neutral tan color – Suitable for lighter and medium tone woods. Unlike mechanical clamping systems, a vacuum press applies even, consistent pressure over the entire surface of the workpiece, creating "intimate contact" between the veneer and the substrate. As always, test first. Unibond One is our newest offering in the Unibond family of gluing products. We offer vinyl and polyurethane vacuum press bags in over a dozen sizes from 2x2 to 5x15 foot. JoeWoodworker's vacuum press plans have certainly made that affordable and fool proof, so I offered to provide a FAQ on the methods I use to make curved panels. Whereas Vacuum Presses range from $50,000 upwards to $90,000. Vacuum Pressing Systems for Laminating & Veneering Vacuum Pressing Systems offers two types of veneering and laminating systems. The most popular size vacuum veneering bag is the 8'6" x 52". $28.95. NEW Membrane presses typically start at $190,000 and can go up to as much as $600,000 depending on the features. Unibond One is a one part PVA adhesive specifically designed and formulated for wood veneering and laminating providing a extra hard glue line, long open work time and will … Veneer softener 90 sold. UnibondOne or Titebond Cold Press are one-part veneer glues formulated to resist bleed-through. stocks a variety of vacuum veneering bags sizes ranging from a small 4' x 27" bag, to a large 10'6" x 72" bag! VENEER PRESS VISE GLUE CLAMP SCREW FOR WOODWORKING WOOD GLUING FRAME PRESSURE. Description. Glue Bleed-Thorough on a Vacuum Press More often than not, when I remove a piece from a vacuum press, I get bleed-through of the glue (Titebond III) through figured cherry veneer (MDF substrate). More often than not, when I remove a piece from a vacuum press, I get bleed-through of the glue (Titebond III) through figured cherry veneer (MDF substrate). Our Story Our Team Thin Air Press Patented Technology Sustainable Forestry Initiative Buy Local About Us About Us. The very first vacuum press for use in the woodworking industry was invented by author DARRYL KEIL. If you’re looking to purchase a Membrane Press, (or vacuum press) the process can be a bit overwhelming! It takes a lot of scaping to remove the glue. The latest development from VLT is the Vacuum Frame Press. Not recommended for exterior use or where moisture is likely. For larger panels, or those with seams, Matt uses a one-part cold-press veneer glue [Supplies on Demand, below], “because its longer open time provides more time to work, and its thicker viscosity reduces squeeze-out through the seams.” Some manufacturers offer light-, medium-, and dark-colored varieties that help any glue line blend better with the veneer. For over 25 years, Vac-u-Clamp has been researching, developing and producing vacuum press technology from it’s Oceanside, California factory. There are instructions for building a system that is powered by an electric vacuum pump as well as instructions for using compressed air to create vacuum. Shop-made Vacuum Press Bag A thin layer of fine mesh cloth creates a uniform finished look as the epoxy cures in the vacuum bag. Free shipping. Here is a short video on VAK-Bond 2000. Membrane vacuum press film water based polyurethane reactive adhesive PU glue Membrane press adhesive is used for vacuum forming products like vacuum forming door, kitchen cabinet panel, it has excellent performance on heat resistance, fast drying, small particle diameter, endurance bonding strength and atomization You can also choose from construction, fiber & garment, and packing vacuum press glue There are 53 suppliers who sells vacuum press glue on Alibaba.com, mainly located in Asia. Bruce Wedlock replies: You are using the wrong glue. $28.95.

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