I know guys that will blow hundreds of dollars at a bar on the weekend and no one really questions it. I might blow $250 on a kit that will pay for itself if it works once. I'm not seeing the downside and I can afford it.They may work but they haven't for my applications . I don't want to steer you away from trying them .
Well said. Just another arrow in the quiver. If used carefully, they do sometimes work. I think prep is the key.I suppose like a lot of things it depends. They worked for me on 7/16 and 1/4 4-flutes that were near flush. I made very sure to keep the sliding parts as close as possible to the tap. This is in steel and armor plate with plenty of lube/penetrant applied. There are all sorts of factors that apply to how stuck a broken tap is. Smaller taps have smaller gaps, less cross-section on the leafs means less shear strength. The way I see it, it's an arrow in the quiver. I broke a 1/8 NPT tap in a rare and expensive cylinder head a few years back, and wished like hell that I'd packed my broken tap extractors with me. I had to drill it out with a carbide abrasive-doped core bit and use a bolt extractor in the end. I wouldn't write them off without considering all the variables.
I'm going to propose something here in all seriousness and sincerity. When you use a tool like this the prongs are not super hardened steel. They flex some. You can use these tools on a tap that is way too stuck to be removed with an extractor, without breaking them..... you simply stop twisting before they shear off. I know it seems unlikely or impossible, but I've done it myself.You're certainly free to buy what you want, and it's not really about money. I'm just passing on my frustration with them (and I was using them correctly). I get the 'another arrow in the quiver' argument - except that a Walton that shears off (my usual experience) makes matters worse. So I'd think of it as an arrow in the quiver of last resort. A more expensive, but more successful method for me has been 'omega drills' : https://www.penntoolco.com/omega-drill-broken-tap-removal-drills/ Though a lot of the time, as soon as I have a nice centered 'dish' on the top of a tap I'll just get at it with a carbide / carbide tipped drill (faster).
GsT
Same, tried them during my apprenticeship a few times and decided to just not snap taps off anymore.As a professional tool & die maker, I've tried them maybe 6-8 times. Zero success rate, even with larger size they still just bend/brake. Best if broken tap can be welded to a nut (backs ritght out), bust the tap with punch/pick (hard not mess up the threads a bit), carbide burrs / left hand drill bit works decent if you have a milling machine for the rigidity and positioning.
I haven't broken more than a few in my entire life. I have gotten them out for others many times.Same, tried them during my apprenticeship a few times and decided to just not snap taps off anymore.
THAT is of course the *real* solution (though it doesn't help those with an already busted tap). A couple of decades ago I went through a rash of breaking taps. In large part because I was still using garbage taps from Irwin and Vermont American. I got fed up with it and made a real study of not breaking taps. That culminated in my acquisition of a number of tapping devices to get taps started perfectly straight, better tapping fluids depending on material, and most importantly quality taps. I can count on one hand the number of taps that I've broken since then. One, perhaps 7 years ago when I got careless power tapping over 100 1/4"-20 holes to make a tooling plate and two or three a year or so ago that were #2 taps in 17-4PH. On that one I eventually switched material to 4140 because I just couldn't make it work.Same, tried them during my apprenticeship a few times and decided to just not snap taps off anymore.
I totally agree.THAT is of course the *real* solution (though it doesn't help those with an already busted tap). A couple of decades ago I went through a rash of breaking taps. In large part because I was still using garbage taps from Irwin and Vermont American. I got fed up with it and made a real study of not breaking taps. That culminated in my acquisition of a number of tapping devices to get taps started perfectly straight, better tapping fluids depending on material, and most importantly quality taps. I can count on one hand the number of taps that I've broken since then. One, perhaps 7 years ago when I got careless power tapping over 100 1/4"-20 holes to make a tooling plate and two or three a year or so ago that were #2 taps in 17-4PH. On that one I eventually switched material to 4140 because I just couldn't make it work.
GsT