I've incorporated them in cut-off boxes, tenoning fixtures, and other applications where a small adjustment can make the difference between good craftsmanship and great craftsmanship. In a second embodiment, the lower portion 391 of a template guide 446 has a shoulder 448 formed around an upper edge of the guide surface 393. Here's more proof of his mad genius: Computer controlled precision box joint jig. Adjustable box joint jig pdf how to. As the user rotates the handle, the lock bar and eccentric cam 156 also rotate.
This embodiment may be useful in setting bit depth for a through dovetail, where thicker workpieces require a deeper cut while thinner workpieces require a shallower cut (the depth of cut matches the workpiece thickness). 8A, 8B, 9 and 10, in embodiments of the guide template the template is secured to the base using one or more brackets 120. Attach the glides to the sled base. The pin allows for even spacing between dados. A series of stops may be provided corresponding to the desired dado size in proportion to workpiece width. In this manner, turning knob 536 adjust the front-to-back 148 position of the back rail 318, and correspondingly the front rail 316, relative to the base 102. The front clamp can be easily attached or removed by fitting protrusions 420 into recesses 422, see FIG. Adjustable box joint jig pdf file. Save THIS PIN to your Board on Pinterest! So you want to hold the one closest to the wheel, and tighten the other one with a wrench. Most box joint jigs are simply attached to a miter gauge. In an advantageous embodiment, a variable spacing collar system includes a kit of collar bodies/outer sleeves corresponding to commonly formed mortise and tenon joints such as a ½″ (one-half inch) joint, a ⅜″ (three-eighths inch) joint, or a ¼″ (one-quarter inch). It is also believed that it will be apparent that various changes may be made in the form, construction and arrangement of the components thereof without departing from the scope and spirit of the invention or without sacrificing all of its material advantages and that the form herein described is merely an explanatory embodiment the invention. The clamp assembly comprises first and second jaws 498 extending from the top surface 495 of the support block 490. In a preferred embodiment, at least two workpiece stops are included in the jig apparatus 100.
Speed and Feed Chart for Metal Cutting. A threaded portion of the rod 510 passes through a block 512, and screws 514 attach the block 512 to the back rail 318. Feel free to send me a couple of hundred dollars and I will purchase a dado set and throw this jig away! For example, the collar body 115 is formed as a generally cylindrical sleeve having an outward extending flange 127 and a threaded end portion 129. In this way, the user can switch back and forth between multiple templates without having to realign the templates each time. Microadjustable Finger Joint Jig. Panel Master Instructions. An adjustable finger 199 may be constructed as a threaded rod, a screw, a smooth shaft with a setscrew, a rack and pinion, or any other method of adjusting the finger as would be obvious to one of skill in the art. 75B is a schematic view of the guide rail positions for forming tapered dados.
The bit stop may be fixed at a pre-selected depth commonly implemented to offset distance or allow for adjustment such as by utilizing a threaded rod, screw or the like. 5 illustrating a sliding tapered dovetail having a tongue/groove with a generally trapezoidal shape; and FIG. Screws 530 pass through holes 532 to secure the threaded block 528 to mounting block 290 while allowing minor front-to-back 148 adjustment of the threaded block 528. Make a few test cuts before fixing the front fence in position. Those of skill in the art will appreciate a wide variety of mechanical interconnections may be implemented to permit adjustable workpiece securing. Now I'm also going to need some knobs. One flat, the other perpendicular to the base making a back fence. For example, one side of the stop 281, 282 provides the offset for cutting one-pass half-blind dovetails, while the other side of the stop 283 is flush for cutting variable-spaced half-blind dovetails. In further examples, a recess or aperture 177 may be included in the sliding fence portion such that a user may align the recess as necessary to permit proper bit clearance while supporting a workpiece along the fence system 155. How to Make a Box Joint Jig. Quick Simple and No Dado Needed. By using any of our Services, you agree to this policy and our Terms of Use.
The vertical surface 486 also includes an upper positioning slot 488 and a lower positioning slot 489. The support block may be formed by extrusion, machining, casting, or another method as would be obvious to one of skill in the art. Slots 474, positioning guides 366, and clamps 368 function to secure a workpiece to the front surface 106, 353 of the jig 100. It would also be advantageous to provide a jig apparatus capable of accurately forming a variety of quality joints at various angles and offsets without the drawbacks experienced in the prior art. 30, embodiments of the router support 135 and the bit depth guide housing 276 allow the router support to be stored in a slot formed on the rear of the depth guide housing when the router support is not in use. The protrusion may also be secured by another means or combination of means as would be apparent to one of skill in the art. Now the carriage moves when you turn the wheel. Plans for box joint jig. To finish the jig, I'm putting wax polish on the hardwood and on the rods.
Disclaimer: I know it's not better than a dado or stacked blade set. Because the blade travels back and forth with the jig, if your key is off by 1mm, your joints will be 2mm off. Such a parallel set-up will result in a non-tapered sliding dovetail. 30, a depth guide housing 276 may be mounted to the top clamp assembly 277 of the jig. Such a stop allows a user to adjust the pre-selected depth as desired. 9 is a top plan view of an exemplary template in accordance with an aspect of the present invention; FIG. If too far apart and they will be too tight to assemble easily. Insert it the spacer, clamp it all up and then remove the spacer. Make a Router Table Box Joint Jig (with pictures. The front rail 316 is then moved toward the back rail 318 until the stop 546 and contact surface 548 each touch an opposite side of the workpiece. The screw connects to a securing system (not shown) in which the screw 341 passes through the finger 340 and threads into a first wedge; as the screw tightens, the first wedge engages a second wedge, forcing the second wedge to move laterally and press against the front or back rail. Tip: To keep the dado blade from splintering the wood where it exits the cuts, scribe the length of the fingers on the board. The ability of a craftsperson to form fine joinery is often the true measure of the person's woodworking skill.