High-performance epoxies for wood, concrete, stone & metal, ConServ Epoxy LLC | conservepoxy.com I have used bond to repair old house doors where the glass door knobs ate the wood away so thin it broke out. Traditional repair methods (such as a wood dutchman, scarf, or splice) or replacement of a part may be better options. Abatron, Wear a respirator when working with epoxy.bigy9950/adobe stock. (Consult the manufacturers recommendations.) Also, can I use a consolidant like the water based P.C Epoxy stuff with a bondo type filler. 2) the wood thoroughly dried through air circulation or heaters. "I have learned so much thanks to the searchable articles on the FHB website. PC Epoxy | pcepoxy.com Worked on a project in Brooklyn replacing all the sash in an old hotel. Anyway, I stick to a basic set of rules : bondo for interior filling (like norml said, do your carving and shaping before it sets). Don't know that it fills pores and structurally hardens the soft material like Abatron is supposed to. Learn about epoxy products and their best use, get tips from the experts, and see a DIY project. Another option that Cabinet cosmetics freaks use is a marine epoxy (the two part type you mix like a Steel Epoxy or JB Weld or other). The trick is not to put it on too thick (build up layers or use blocks of wood to fill voids), and to sand/trim while the material is still plastic (within 30 minutes of application). Abatron | abatron.com As part of the restoration of the front vestibule on our 1880s townhouse, Wendy and I adapted a salvaged maple exterior door for the new entry. Coating large areas with consolidant creates a moisture barrier, which can actually trap moisture and speed up the decay process. So, for quality work I probably won't use it again. Alex Santantonio, A deteriorated window sash is saturated with liquid epoxy consolidant, with special attention paid to end grain. Same observations about sanding. I now know how to fix a few things on my cab I'm working on. Applying and working with WoodEpox is easy and straightforward. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page. *The epoxy product that I have used (Abatron) is worth the extra if for no other reason that it sands more like the wood, whereas Bondo is much harder than the wood and will tend to stand proud of the surrounding areas if you're not careful when sanding. An epoxy adhesive was used. Moisture and water diminish penetration and adhesion. Mixed epoxies give off heat as the resin and hardener polymerize, and since heat accelerates curing, the patch may cure quickly, especially on a hot day. (If you do, wash immediately with vinegar, then soap and water). They not only have fillers, but also a product called Liquid Wood that you impregnate the old wood with, rotted or not, and it stabilizes it. Especially on the bottoms of cabs. Absolutely all of the decayed wood must be saturated; otherwise moisture and ongoing rot is trapped, which hastens deterioration. When we found the door, the joints were loose and the peeling paint needed sanding and stripping, but it was about the right size for the opening and clearly was from the same era as the house in its style and construction. The epoxy curing process actually has three stages, and this can be a great advantage when working with fillers. Of course, you have to step back and solve the initial problem. A common mistake we see is someone using a consolidant as a protective coating, rather than as a treatment for decayed wood. *bondo works great for interior paint-grade applications, but i'd use epoxy for anything that will see the abuses of weather. *Following a previous discussion on this forum I tried Bondo on a refinishing project. Ray Tschoepe. Paste fillers can be colored, either by adding dry pigments to the A/B blend during mixing, or by staining or painting after hardening. A historic Palladian-style window is in place after repairs that involved several products and techniques. With experience, its possible to quickly work the filler without breaking its bond to the wood, waiting until the filler has cured hard for final shaping and sanding. Once cured, the epoxy can be sanded, planed, cut, carved, drilled, nailed, and painted just like wood. In this method everything is exposed and you can be sure that whats left is sound. (You can always remove excess material after it cures.) I could be wrong but that's what I've used to do a couple of mine. You must log in or register to reply here. In this short stage, the epoxy has begun its initial cure; while it is no longer a liquid it is not quite yet a hard solid. Patching with Wood paper as a separator. Get home building tips, offers, and expert advice in your inbox. I do know that wood decay fungi will survive in surrounding areas and decay may progress beyond the repaired area (at least in poplar in exterior applications, which admittedly is a poor choice). West System | westsystem.com The epoxies used in rehabilitating wood are made up of a resin and a hardener. Reversibility is a key preservation tenet, and thus required for some work on landmarked buildings and antiques. It didn't take finish the same as the wood so to my eye it stands out. Anything structural and exterior, West System epoxy, and an assortment of phenolic microballoons and other fillers. Ray Tschoepe. Plus, get tips for a clean and solid installation. the element or piece would be difficult to replicate with new wood, such as molded trim that would require sophisticated machining or laborious handwork. Its an active compound that presents certain health hazards if conditions allow. Some architectural conservators believe that epoxies do more harm than good, both because an epoxy repair can backfire if preparation is poor, and because epoxy repairs are virtually irreversible and permanent. I'm not familiar with the P.C. You can check out this product, as well as Wood Epox at http://www.abatron.com/home002.htm. Do not get liquid materials on your skin. 2022 The Taunton Press, Inc. All rights reserved. *I have to agree with bullet. Body filler is made for sheet metal work. Spend the money on an item that is difficult or costly to replace, such as a carved column capital. Epoxy fillers formulated for wood can be tooled once cured. the piece must be drilled for screws or milled for joinery. (Ive been using it for years, ever since I saw an advertisement for it in Old-House Journal in 2003.). After laboriously making the initial repairs, I was ready to patch several nicks and holes too large to address with wood filler. Wearing latex gloves (epoxy can be disastrously sticky), open both containers. Use a dutchman patch or splice when . These consist of resins and additives combined (often in proprietary mixtures) to make a gap-filling paste. . its square stock or something readily available and easily replaced. Wearnitrile, vinyl, or rubber (Playtex) gloves, and eyeprotection. Epoxies are two-part systems. An epoxy adhesive was used.Ray Tschoepe. Admittedly the casual observer probably won't see the difference. By volume, epoxy fillers are more expensive than most woods, so consider the value of making repairs with epoxy versus new wood. this is your third epoxy fill on the same piece of wood. Repair products including common auto-body filler get caught up in the confusion. Developed by Gougeon Brothers initially for boatbuilding, West System has a full line of epoxies for outdoor use. As thermosetting compounds, they cure through a heat reaction. Deteriorated wood in muntins was carefully removed and replaced with new wood splices in the fan portion of the sash. . Im doing my first restoration and Ive seen alot of people on here use bondo, which is great. say that I expect to be a life-long subscriber." the damage covers more than 50% of the piece. The work time is at most 20 minuteslong enough not to rush, but short enough that everything should be set up and ready to go before you start. i don't know if that is true or not, I've never seen it in the Abatron literature. 2143 Grand Avenue, Des Moines, IA 50312. Avoid shallow or too-large containers. Use less hardener. Always wear gloves. Step 4 Additional filling and tooling (after cure) restores the original profiles. The reason is because bondo will not expand or contract and the wood will. To protect the epoxy patch from rain while it cures, loosely cover the repair with plastic sheeting. you need to replace up to 50% of the element. I used a wood filler from Lowes on my cab resto. It's a poor choice for filling any deep area, which the directions usually point out. Probably the biggest issue with wood filler is that being a single part product, the cure time is lengthy and the product often shrinks as it out-gasses during the cure. As it hardens use a razor blade to rough cut to shape, then sand it to be exact. A deteriorated window sash is saturated with liquid epoxy consolidant, with special attention paid to end grain. Specific primers to be used on sound, clean, dry surfaces are also sold for use before filling with epoxy. Deteriorated wood in muntins was carefully removed and replaced with new wood splices in the fan portion of the sash. Missing wood in the door frame from old hinge locations needed patching, too. All Rights Reserved. I heard automotive filler (bondo) will eventually pop out of place or crack if applied to wood. Using the opposite hand, pull out an equal sized lump from the other container. Disclosure. The cured epoxy can be hard and brittle or soft and rubbery. Different formulations make epoxy compounds compatible with wood, glass, stone, concrete, and more. Mix only as much as can be used within the pot life. WoodEpox (paste filler) can also be mixed by hand in small quantities, like modeling clay. After the fresh surface is coated with an epoxy primer, voids are filled with epoxy paste filler. This is a dialog window which overlays the main content of the page. Please share your opinions Thanks. Using only your left or right hand, pull out a ball of material. With WoodEpox, one part is a dark tan color and the other is bright white. product to which you refer, but would never mix products that use different solvents. So I guess this is a no brainer.. Ive already started to use bondo.. Its kinda hard to shape the corners and base before it drys and gets clumpy. (More upcoming in OHJs Sept. 2019 issue.) I too have often wondered why people use automotive body filler on here for their wood work. I thought it was mentioned that bondo doesn't react thermally (expansion/contraction) so it won't crack once cured, but wood filler does. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Step 3 New mouldings were milled in redwood for the base, adhered with the same epoxies. Dont try to sand the repair too soon or it will gum up your sanding discs or pull away from the filled area. Larger projects often require perforating all of the damaged wood with small holes in strategic spots to enhance saturation, then filling these holes with consolidant mixture from a squeeze bottle. Moisture content should be below 17%. Some of the 'wood epoxy' sold is pretty much the same thing as Bondo, just packaged differently. Preparing decay zones for epoxyrepair: My method uses a HEPA vacuum along with a 90 auto mechanics pick pulled across the grain. It provides quick, controlled removal of damaged wood, clear visibility of the decay zone, and constant assessment of the substrate. 1) the source of moisture corrected and Wear a respirator when working with epoxy. Good use of epoxy on damaged wood falls into two categories (not mutually exclusive): consolidation, and filling. The damaged or rotted section of wood is removed to create a clean line for gluing. Ideally, the consolidant penetrates right to the threshold of sound wood, returning the damaged area to a significant percentage of its former strength and durability when it cures. But it gives you a compatible material to experiment with. Permanent repair products for wood, concrete, etc. (Bondo is the familiar product from 3M.) Chemists formulate epoxies with a wide range of pre-cure and post-cure characteristics. For now, feel free to continue reading. Epoxies cannot penetrate wood fiber that already has a high moisture content, as might be found inside a post or column. For this reason, some restoration conservators use consolidants along with wood preservatives, such as borates, when working on large repairs. The word epoxy often is used erroneously to mean any resin applied to repair woodeven when the resin is not epoxy. But if it is in an area where appearance doesn't count I will. For a better experience, please enable JavaScript in your browser before proceeding. Also, like the previous poster I had to take care to sand it in properly. To mitigate in these conditions, keep the epoxy components (before mixing) in a cool place. Epoxy technologydates to the 1940s; like plywood and Plexiglas, it was an innovation of the war effort. Unlike simple one-part wood putty, epoxy fillers are, again, mixed from A and B components and often formulated not only to adhere well to consolidated wood (which helps increase their bond in tough, outdoor conditions) but to flex like wood and even tool like wood using planes, chisels, and sandpaper. But I was just searching around doing some research on wood restoration and stumbled upon a wood restoration brand called Abatron, which is a wood epoxy. . Epoxies that bond fiberglass, wood, metal, fabrics & other materials, Copyright 2022 Home Group, a division of Active Interest Media. (Wearing gloves is recommended.) Epoxy was used as an alternative to metal fasteners in the production of aircraft. it is important to respect original construction and wood species. Put mixed components on ice, if possible. It is ok if it is on the side of the cabinet that nobody touches ever but if it is at the cabinet (Vid) corners or Pinball (with vibrations and all), I have used Bondo many times instead. nice. An alternative is to remove all of the decayed wood. Step 2 After consolidation with a liquid epoxy, a paste slurry and then a paste filler are used.
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