WEN 10423 3 x 2 x 1-Inch Steel-Hardened Precision 123 Blocks, Two Pack

I have measured them against another set of set-up blocks, and they look and feel like they're accurate. They're solid, with a nice, heavy feel. Maybe I just got lucky, but the blocks I received don't have any of the grease and oil that so many of the reviewers have complained about. Immediately upon opening the box, I noticed they didn't feel greasy at all. I then took a clean paper towel and rubbed all sides vigorously. The towel stayed as dry as the moment I tore it off the roll. Pretty darned happy with my purchase.

Very great for setup to have sitting on the bench for welding jigs and stuff like that. Also really good for use on a mill.

Well made. Very accurate. Excellent value. Coat it with paste wax to prevent rust.

These easy to use 123 blocks are basically a no-brainer for nearly every woodworker. Excellent for setting blade heights, or distance to fence or other layout situations. Especially useful with setup bars. These are the perfectly sized for 1 inch, 2 inch or 3 inch spacing. They will last you for many years, they're a great value. I've had my set for 5 years. The only downside is they are steel, so do what you can to prevent rust. I'm in a humid climate, so it's an issue here. I've cleaned them and applied wax recently, hoping that that will help long term. Easy to store away with your other layout tools.

The blocks are equal, square and parallel to each other within about .0003", although both blocks are a bit narrow in the middle - only measuring .9995" across the center. They are both out of square by about .0003" on the 1" face. The 2" edges are only out of square by .0001, maybe a touch more. At the corners, the 1", 2" and 3" dimensions are dead on. All in all, they are dimensionally pretty good. Like most import 123 blocks, the through holes are only 5/16" and the threaded holes are 3/8". It's like the first person to copy 123 blocks got them wrong and everyone has been copying them since. Oh well, for <$20, what are you going to complain about? Threads in two of the holes wouldn't pass a bolt, but after running a couple of hardened cap screws through with some force, the threads cleaned out. I think it was some gunk stuck in the threads, not bad threads. Now, all the threads are good. The grinding is good on the surfaces although the chamfered corners were a little rough. There were no burrs or blemishes and the blocks were well packed and coated in grease All in all, the blocks I received are quite good and it required some pretty careful measuring to quantify their minimal error.

If you plan on taping holes you will need these to make sure you tap a straight hole or you could mess it up so it worked well for that

Excellent build. Not excessively coated in cosmoline. All unthreaded holes properly pass a 3/8 inch bolt. Threaded holes operate smoothly. Far superior to the blocks I received from Taylor Toolworks, which lack all the qualities mentioned. I hope WEN will some day also produce a block attachment kit. That would be an excellent combination...

Bought two sets, so four total. Cleaned them off with mineral spirits and some denaturated alcohol and measured all dimensions, and each end, with Mitutoyo calipers (precision to 0.0005"). They all landed on the 0 but depended on the pressure applied, meaning they are probably somewhere in their stated 0.0002" tolerance. The middles all dipped to X.9995" with the same pressure applied to the edges, but stayed at 0 with lighter pressure, so each of the blocks has a very mild dip in the middle, but that's ok. I also used a DIN 875/00 knife-edge reference square to check for square. They're good enough for wood working and some rough machining setups. Some corners were so good there was zero light leak. Others were off a bit. Definitely not ultra-precise blocks, but more than good enough for most needs, especially at this price point. Blocks like these make EXCELLENT clamping and square blocks for building boxes or other things where traditional full size woodworking clamping squares won't fit. They also won't flex or bend, so you can apply significant clamping pressure to use these to force tight joints into square.

Gut verpackt in Ölpapier angekommen, keine Spur von Rost. Erst mal entfettet und mit dem guten Mitutoyo Messchieber kontrolliert, alle Maße 0. Das ist so genau genug für mich. Messung mit Bügelmesschraube folgt, ist für Holzwerken aber egal. Alle Gewinde passen und auch die Durchgangsbohrungen. Das sind 100 Punkte!

Well packaged to prevent rust & damage in transit. Measured within advertised specs for accuracy. A great little bargain.

Great quality, bought a second set.

Bella gente, il prodotto arriva in scatolina di cartone con stanpato il nome e codice prodotto. All'interno non troverete istruzioni o foglio illustrativo ma solo i due blocchetti incartati con del celofan, in una bustina di plastica...consiglio di munirvi di straccio e petrolio per una bella grassata. Prodotto consigliato per hobbistica.

Produto muito bom e preciso ideal para os serviços de usinagem