4 total Woodthreading Tap & Die sets in Great Condition. The 1 & 7/8 are the highly sought after Dieter Schmid (99% sure, you can look them up online if you need proof) made in West Germany. The smaller two 3/4 & 1/2 are the Woodcraft Supply Versions made from the exact same design. The Article below gives an amazing Fine-Woodworking review of these guys from the man himself.Christopher Schwartz said it way better than i can. (From the Lost Art Press Blog). [note: this refers to a different sized threading kit from Dieter Schmid].
The threader and tap are extremely well made. And after experimenting with it a lot this winter, I can recommend it for those who can afford it. It makes crisp threads with little effort. Here are some helpful details if you follow me down this path.The tool is metric, and while you can get away with Imperial tooling, youll be better off switching your brain to metric for this operation. The wooden dowel should be 28mm or slightly undersized for the male threads. I turned my dowels from straight-grain maple to 1.10, which slipped right into the threader with no wobble. This makes for crisp threads. The nice thing about the threader is it makes threads with a square tip not triangular. These square, acme-like threads are more durable. The downside to the threader is that it leaves a 1-1/2 long area of a handle unthreaded, as you can see in the photo above.
This is caused by the long collar of the threader. The long collar improves the accuracy of the tool, so its a trade-off. The tap works with a 23mm-diameter hole. The tap cuts cleanly in both hardwoods and harder soft woods, such as yellow pine. My only caveat to the tap is I recommend chamfering the entry hole or the leading cutter of the tap can, on occasion, splinter the work.One last detail about the tools: Jennie recommends using tallow on the cutter and I second that recommendation. The tallow makes the job easier and prevents chips from jamming into the V-cutter, which will spoil the dowel. So Im happy to report that my search for a good wood-threading kit is over. It was an expensive journey, but I now have an excellent working tool that doesnt require a router.
The item "1 7/8 3/4 1/2 Wood Thread Cutting Tap & Die Sets (Dieter Schmid) (Woodcraft)" is in sale since Thursday, June 13, 2019. This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Carpentry, Woodworking\Other Collectible Carpentry". The seller is "the_mad_stone" and is located in Lookout Mountain, Georgia. This item can be shipped to United States.