Kerfing dimensions. The sides are much too thin to get a good glue joint by themselves, so kerfing is added to thicken this area of the guitar. Red pine and Korean pine were treated with partial end sealing (PES) for the subsequent high-temperature low-humidity drying in Lee et al. To do this, cut three 24×48" pieces of 3 ⁄ 4 " plywood, particleboard, or medium-density fiberboard (MDF). It is exactly the same problem that arises if the top and back braces are butted against the kerfing, rather than inletting into the kerfing. First, make the form Before you start kerfing the apron stock for our table, make the bending form, shown on Drawing 4, below. The smallest clip is 5mm and can hold weights up to 10kg all the way up to the largest clip that has been used on the ANZAC Walk in Adelaide to hold stones of over 400kg. 1/4" (6mm) Thickness can be used as the kerfed lining of the whole 41" guitar. As trim expands from water absorption, the resulting movement can lead to unsightly damage and leave extended gaps in the exterior wrap, making other parts of the home susceptible to water damage. If this video helped you, we’re glad to hear it! Traditional profile that reinforces the gluing area between the top, back, and sides while remaining lightweight Mahogany is a great traditional tonewood choice for kerfing Measurements: Calculator Apps for construction and renovation with detailed scaled diagrams + woodwork metal work and craft The effect of cross-sectional dimensions on bow and surface checking were investigated, using the boxed-heart square timber of two sugi cultivars with dimensions 80, 120, and 140 mm and length 1. However, that is not always the case for all their length. ntify the effect of kerfing and incising pretreatments on high-temperature drying characteristics of cedar and lar h boxed-heart timbers with a cross section of less than 150 mm. I am bending oak. Kerfing, therefore, is only logically applicable to wood thicknesses of from 1∕4 in. 88mm x 5. Traditional profile that Kerfed lining made of spruce. Traditional profile that reinforces the gluing area between the top, back, and sides while remaining lightweight Mahogany is a great traditional tonewood choice for kerfing Measurements: A5 kerfing was designed to improve the flexibility of traditional kerfed liners. , 2017). 56mm) Khaya (also known as African Mahogany) is a great traditional tonewood choice for guitar kerfing. The kerfing in the fiber direction was shown not to have a significant effect on the drying rate compared to the control, but it may affect the final moisture profile (Lee et al. As mentioned above in the description of the technique, it is quite common to saw the kerfs to make them deeper, so that they don’t break in high curvature areas. We use many cuts and some boiling water. When did Martin stop tucking the back braces into the kerfing? 3. I finally get to remove the sides from t For some applications (for example a slot together product), you will need to account for the kerf within your drawing by adding or subtracting the kerf width from your component dimensions. Kerf bending is a technique where you remove […] Build Architectural Elements: Use kerfing to construct decorative arches for doorways, curved trim for walls or ceilings, and custom-built alcoves. 1. Although the kerfing was suitable as a pretreatment t Now that the guitar sides are together, I need to add the kerfing and some bracing. Our Martin acoustic kit build continues, as we level the kerfing, join the back plates and pop a little something in the oven. This leads to rot, mold growth, and material expansion. Geometrically, more, closer and thinner kerf cuts should give a smoother curve -- Less and wider cuts may give a curve with segments having sharper bends at the kerf cut. It is mostly the personal choice of the luthier as all the profiles Want to help us make more content? Please consider becoming a member of our channel! It really helps us out. Start a rewarding project with Woodcraft. Design Custom Enclosures: The world of speaker box design relies heavily on kerfing to create the smooth, rounded ports and corners that improve sound quality and aesthetics. In this video, I Use 2D planar plywood plate to approximate the double curve surface by using the design of kerfing. Although the kerfing was suitable as a pretreatment to reduce the In this video, I'll be installing the spanish cedar kerfing as well as the side braces for my acoustic guitar build. 25" x . I've use this same piece of wood for A: Yes, the formula works for any material where kerfing is applied, including wood, metal, plastic, and composites. uk demonstrates how to make Kerfing. Is there a calculator that will give me a smooth curve? it need more cuts for sure. The kerfing technique, in addition to make flexible the panel, can also make it deformable. This method effectively creates gentle curves and is a great starting point for beginners. " I make my own kerfing because I really like to make as much of the instrument as possible, I can make kerfing using light or dark woods to better match the sides, and can make it in a ‘ukulele’ size, as opposed to guitar kerfing which is mostly what is commercially available. upwards. Test your dimensions and cut depth on pieces of scrap first, to perfect. It seems it will make the curve very facetted. 14"(360mm) length can be used as the Kerfed lining of the whole D-type 41" guitar. The result showed that the pretreatments have made a significant difference regarding surface check and shrinkage. How to Adjust for Wood Thickness and Kerf on a Laser Cutter at Techshop: In this Instructable I will show you my method to adjust your patterns to the correct thickness on a laser cutter. Did Martin tuck the braces into the kerfing using the 45 degree angle as they did with fan braces and tone bars? It depends on the type of wood, grain, dimensions etc. . A simple test bend on a spare length of material can be used to determine kerf spacing. The While the most recent reincarnation of this hybrid saw-plane has been branded a "kerfing plane" by Tom Fidgen, this form has been around for centuries. Buy 8Pcs Guitar Strip Kerfing Inside Binding Spruce Wood Lining Luthier Guitar DIY Accessory 360x17x4mm: Electric Guitar Strings - Amazon. I have different size slots on the 2 edges of the 2 x 6. Learn how to bend wood using kerf cuts—no steam, no soaking. If this video helped you, we’re glad to hear it! The structure (2) looks a lot as reversed kerfing, so you can expect that this technique leads to strong sides. The following table gives an overview of the average measurement the laser will take away when cutting on the most commonly cut materials and thicknesses. The kerfing (or, generally, linings) of an acoustic guitar reinforce the sides and give a surface for gluing the top and back of the guitar. The end view shows how the 2 x 6 is cut on an angle to allow shaping of the kerfing. More kerfs (greater bend value) generally allow for tighter bend radii. The kerfing is there to add some glueing surface for the top. Although the kerfing was suitable as a pretreatment t Kerfing can be achieved in many ways, including cutting with a hand saw but when laser machines become involved, you can produce some incredible results that are usually much more intricate as the laser is often more precise. I went through this to make my wood box slot together with a tight fit and I made this at Techshop San Jose using their Epilog 60W Hel… Five9 LiveChat Client PROTECT YOUR PROJECT WITH AZEK TRIM Even when painted, wood and other porous trim materials naturally absorb water. Dimentions: 740mm x 19mm x 5mm. In our research we have considered materials and manufacturing techniques that can solve approximation problems allowing non isometric transformation of the panel thanks to “cuts”, kerfing, or “overlapping”, bending. It depends on the type of wood, grain, dimensions etc. For the top I laminate 2, 3 or 4 (depends of guitar type) 3mm beech strip. Our patented, multi-axis design allows the liner to flex against it's long and short axis, making it possible to line the dramatic arch of a guitar back as easily as a tight cutaway. 00 minimum order. Think of a Dress Mirror with a curved top, a round box, or…well let your imagination run. This calculator finds the spacing of the cuts (at entered dimensions), so when the piece is bent, the inside edges of each cut touch together to form the correct curve. Explore dulcimer build techniques, get free mountain dulcimer plans, and learn how to make a dulcimer today. Was the #1 (traverse) top brace ever tucked into the kerfing? If so, when did Martin change to an abutted brace. I guess my comfort zone is having the rims more stiff, so I plan on using the reverse kerfing in the future. com FREE DELIVERY possible on eligible purchases Kerfed linings or (also known as kerfing) are used to line the sides of an acoustic guitar or other instrument where the top or back are attached. Kerfing is a woodworking technique that involves cutting thin slits or grooves in wood to make it more flexible. (2017). 1) This study was conducted to identify the effect of kerfing and incising pretreatments on high-temperature drying characteristics of cedar and larch boxed-heart timbers with a cross section of less than 150 mm. By creating this path, the kerfing plane helps eliminate saw drift, making re-sawing tasks much more reliable and accurate. Nov 30, 2009 · Tapering the thickness of the ends to zero may help, but butting the brace against the kerfing only introduces a stress riser that is in a line parallel with the grain in the sides. length: 14" (360mm). Kerfing Build and Repair All times are GMT -6. What do kerfing clamps and a master key to help you build your best guitar ever have in common? You'll have to watch the video to find out! Mahogany and basswood linings with traditional and reversed kerfing. Different Kerfing Patterns: Basic Kerfing: The simplest form of kerfing involves evenly spaced cuts along the length of the wood. Nicely flexible, rounded corner 4 Units. The technique of bending wood by kerfing that removes material in order to allow the bending of radius corners. Mark a point on this line 1 3 ⁄ 4 " in from one edge. The linings strengthen these joins and offer more surface area for the glue to hold. We offer three different profiles of kerfed linings for guitars and two for smaller instruments. A: Yes, the formula works for any material where kerfing is applied, including wood, metal, plastic, and composites. It’s especially useful in creating curved shapes for furniture, cabinetry, and even boat building. I will add cuts in the kerfing every quarter inch down the length so that it bends around the sides of the inside of the guitar to create a shelf for the soundboard and backboard. 37 78 Share Add a Comment Sort by: ntify the effect of kerfing and incising pretreatments on high-temperature drying characteristics of cedar and lar h boxed-heart timbers with a cross section of less than 150 mm. Thanks again Charlie Now that the guitar sides are together, I need to add the kerfing and some bracing. co. Kerfing Question: this advance kerfing calculator tells me to only do 7 cuts for a 22" arc length. This process is commonly used to create curved shapes and is especially useful for shaping the sides of musical instruments like guitars. Test your dimensions and cut depth on pieces of scrap Sep 25, 2018 · About this item Set of 8 kerfed guitar linings / ribbon lining, enough to glue the top and back of a Dreadnought or other full sized acoustic or classical guitar. One for guitar kerfing and one for uke kerfing. 20mm x 15. Want to help us make more content? Please consider becoming a member of our channel! It really helps us out. I finally get to remove the sides from t Length of Mahogany 2 ply kerfing. In this video, I'll be installing the spanish cedar kerfing as well as the side braces for my acoustic guitar build. Make a single saw-cut in the wood and from this mark off the radius of bend required. Best thickness for good results appears to range between 5∕8 and 1 in. Dimensions 780 x 16 x 5mm Each guitar will require 4 lengths of kerfing. I think that solid kerfing (dense wood) on top improve clarity and sound focus and definitively increase volume regards Fric You do not have the required permissions to view the files attached to this post. 625" x 32". The next 2 photos show the simple holding jig I use when shaping kerfing with a power sander or by hand. Kerfing the Wood for Bending When you take a strip of wood and you cut several slots in it that go nearly all the way through but not quite, it creates a board that is flexible. The layout and the size of kerfing directly affect the bending effect and the final geometry. The time now is 01:14 AM. The kerfing is basically a triangle shaped piece . 2. By Brad Holden… Stone Clip is a patented, engineer certified product that offers different systems to cater for different weights, dimensions and sizes of stone. The kerfing plane was designed with the understanding that a saw will follow the path of least resistance. Dimensions 745 x 16 x 5mm Wedge Profile Each guitar will require 4 lengths of kerfing. Q4: What's the relationship between kerf bend and bend radius? A: The total kerf bend determines how much the material can flex. In this post I’ll show you a couple of different methods for obtaining Kerfing strips, as well as Length of Mahogany rounded kerfing. Alan from PeregrineGuitars. Each individual kerfing strip measures 18" (L) x 5/8" (H) x 7/32" (W). You can then curve the board into many different shapes, and it doesn’t require heat or glue. Although early versions (including the stair saw and the joinery saw described by Roubo in 1769) had a saw blade mounted in a plane body, they lacked the fence that make this saw-plane so useful Build Architectural Elements: Use kerfing to construct decorative arches for doorways, curved trim for walls or ceilings, and custom-built alcoves. Kerfing is a key technique in woodworking, allowing you to bend wood by making precise cuts (kerfs) that increase flexibility without compromising strength. Design and Functionality The kerfing plane typically consists of a saw blade attached to a body with a fence. (457. This is how to make an Acoustic Guitar part Eleven, Kerfing. ShopBot's Ryan Patterson demonstrates how to use Aspire (and VCarve Pro) to create a file for making flexible plywood, also called "kerfing. It is just a 2 x 6 with a slot cut in it that fits the kerfing. 9 There are myriad ways to bend wood–steam-bending, bent lamination, hot-pipe bending–but one method that doesn’t get very much attention is kerf bending. Bookmark. Sep 8, 2025 · Guitar kerfing and linings: What style should you use and why? Find out how to make that choice in this article series on guitar linings. *please note, we have a $30. Did you know that every guitar is full of kerfing, reinforcing the interior corners? So what really is kerfing? Kerfing is in simple terms the act of cutting a series of kerfs (cuts) in a piece of wood in close proximity, so the wood can be curved. Enought for making an Acoustic/Classical guitar. The optimum depth of the cut, and thus remaining minimum thickness of wood to obtain the curve cannot be calculated. Draw a centerline across the 24" dimension of each piece. I just finished gluing up the traditional Kerfing on the current project, and I must say there is a difference between the reverse and the traditional Kerfing, in how it effects the stiffness of the rims. This DIY method lets you curve even a 2x4 with just a saw and some nerve. s0uzoh, duc4z4, mitjw, xmwpz1, a37t, 0j4njy, q6ai, stfpu1, swlsz, ehgt,