I don’t have a credit card, so ordering online is out of the question for all of the sites that don’t offer paypal as a payment option. Now I love all wood tools, but I must say that this one surprised me at how easily it did its appointed task…and how well. Eight teeth per inch is about the minimum for a ½” tap and larger should have 6 teeth per inch and on very large screws for presses 4 TPI to withstand the pressure. Right now Im working on another project, but I know that I’ll get back to threading again soon.
Written by Beall Wood Threader inventor, JR Beall, this book (Street price $14.95, 12-19-2005) is filled with tips and tricks for making threaded projects from desk clocks to tables, toys, quilt racks and more. I don’t think so- it would only crack if the tap were forcing the wood apart, which would only happen if your pilot hole were too small. The threads that touch the wood are a bit more coarse so they hold well and don’t move.
And there are a lot of other lengths, diameters, and pitch than the most common 1/4-20 x 2 1/2″, and can be far more usefully employed when one knows that there are more options. About the easiest wood to cut nice threads on is Apple, or some tight-grained wood like it (Dogwood is also excellent). A coat of finish and my now mandatory Beall Wood Buff treatment and they were ready for use.
I would be curious to see how long that method of tapping directly into the wood and using machine bolts lasts, especially if it is constantly being loosened and tightened. I have plans to make a garland of violin clamps, with wood dowels to better protect the violin edges. The tap and die set looks to be of high quality the 2 metal taps come sealed in a bag and oiled, the whole set is boxed and the instructions are straight forward and easy to understand. I usually clamp the screw blank in a vice to hold it during the threading process.
To make the bolt (external thread) you use the cutting box, using a bit of oil on the wood and leaving it for a few minutes makes a difference, you get a much cleaner thread. He has been on the faculty at Mississippi State University since 1971 and was awarded the title of W. S. Thompson Distinguished Professorship in Wood Science & Technology in 2007. Just remember that this will swell the wood so be sure to pass the tap through a second time for a clean up pass. Introduction to Wood Products – A brief overview of wood products from the forest, through production and utilization.
One other thing to consider with just tapping directly into the wood is to use a bottoming” or finishing tap that doesn’t have the taper. The cutter is positioned right over the first complete thread peak at an angle of 30ºand the leading edge of the cutter should engage the wood at the widest part of the cutter first to score the wood being removed.
I guess I would have to see some kind of pullout testing and environment test that allow for wood movement before I buy in. Tip: for the best fit, if the wood screws were #5, replace them with #5-40 machine screws. My initial impression of the Beall Wood Threader Kit was that it might be too simple to meet expectations. When it threaded on the dowel so smoothly, I could only give a nod of appreciation to JR Beall and his wood threader kit.
I agree with Travis who posted above, I don’t think anything will ever beat the threaded inserts & threaded brass inserts I use – I’m quite lucky because I get my inserts quite cheap from a UK provider – they have next day delivery too! The nuts and bolts in the photos are the products of my first efforts with the Beall Wood Threader Kit. But today, as we were threading 26 rods during a class at the Marc Adams School of Woodworking , the roof caved in. These taps are similar to modern metal cutting taps except they are larger and have fewer teeth per inch.
Since you are threading it I would see this process taking a while but I suspect it will happen. While interviewing Jennie Alexander last May, she showed me her German tap and wood threader, a tool she has had for many years and worked perfectly. The thicker the piece of wood that is threaded, the stronger the threads will be. I haven’t used the Beal, I made my own threading kits with tapped wood blocks long before Beal came out with their elegant but pricey plastic inserts. Regular taps have a tapered end to make it easy to start the tool into the wood.
So to cut wood threads you need two tools – a tap (to cut the internal thread) and a matching die (to cut the external thread). If you want one extra bit of security, before threading you can dry out the end of the handle stock by placing near a heat source for a couple of hours, then thread and screw home. We have threaded some poplar wood screws along with the normal maple and walnut to see how they hold up. Once you’ve made some wood screws, ideas for using them in different applications abound.
The Beall Wood Threading Kit dictates the size and shape of the female threads, but you can control the size of the male threads. The Beall literature cautions that the hardware store dowels (ramin wood) are often undersize (dia.) and egg shaped, probably from being too wet when cut. Keep an eye out for the videos that will be coming soon covering the wood threader and board flattening jig. Over time, the small teeth that go into the wood fibers can break or the wood itself can compress, causing the Tee Nut to lose its grip.
Craig, 1/15/2014 The included instructions (and that display photo with a thread break-out) imply that I should expect a bit of a struggle in turning out a good pair of threads – but it went almost effortlessly on the first try. It is basically the same price as the Woodcraft one and had the bottoming tap…not that you’d need that for your vise. I just made a moxon vise a la Schwarz using a version of the woodcraft offering.
First I set the tool up per the manufacturer’s instructions and took a test cut to determine the error. They are designed to fit in a through hole but from the BACK SIDE of the wood so when the bolt goes through the wood it pulls the Tee Nut towards it making a very strong joint with the wood being held between the bolt head and the Tee Nut. When I checked that hole and it mic’d at 0.745 inch, which I opened up to a full 3/4 inch.
Don Paolino, 4/13/2011 This item, along with the 1 1/4 inch size product is very hard to find in those sizes. The fit between the screw and wood is actually better than using a tap and holds well, but I would only use these (or your tap method) in hardwoods as some previous post have mentioned the threads are just not that deep compared to using say a threaded insert. The catalog mentioned the testing they’ve done that show the tapped threads are often stronger than wood screw threads. Mario Lagarde, 1/26/2015 It might be difficult to understand to anyone not living outside USA the review/comments I´m about to complete in this review.
On thin pieces for the nut, the threads can easily be cut at an angle, so make sure the hole is straight and the threading is done properly. Dr. Wan received his B.S. in forest products at Central Southern University of Forestry and Technology in China, his master degree in wood composite at the Royal Agriculture University of Copenhagen, Denmark and his Ph.D. in wood composites at Mississippi State University, USA. I used a piece of quarter-sawn oak that I thought would be strong and give me a good threading surface.
Before learning to tap threads in wood, I thought it would be helpful to review other types of mechanical fasteners and why they might not be as good as a bolt in a threaded hole. Make sure the exit hole is countersunk to insure that the tap doesn’t break out any wood when it exits. His research interests are sustainable manufacturing forest products, wood adhesives, recycling, and new forest products development. I try and exert enough pressure to engage the wood on flat grain first rather than the side grain.
During one project with white oak, I got so frustrated breaking wood screws for hinges (even steel ones), that I gave tapped threads a try. When you compress wood it will push back (think spring) and it will hold your tee nut. The kit components are very well made, making the street price of $139.95 (12-19-2005) a long-term investment. If the wood is fuzzy on the inside of the threads, I wet the piece with water and raise the grain.
The indicated size of the manual wood threader is the size of dowel used to make the male threads and the size of the hole required to make the female threads. When threading in an angled hole, the grain orientation is important as is beginning the cutting with the tap. The new wood threading tools are of good quality and generally follow traditional designs.
If you are threading a blind hole, your starting tap will hit bottom, then back out the tap, remove the dross and carefully place the bottoming tap into the threads and run it down until it cuts the internal threads on a blind hole. When it’s okay to screw up your wood – With the Wood Threading Kit—which offers precision cutters—you can make short work of cutting both inside and outside threads, though a few precautions are in order. I have never threaded wood before but, if I were going to try, I would start with a tight grained wood like maple or birch instead of oak.