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1/4 bsp tap

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michael burton 1	20/05/2012 22:55:14
126 forum posts 32 photos	just for a laugh really this post. the other day i purchesed a 1/4 bsp tap and every thread i cut with it came out over size even tho i was using the correct tapping drill size so i measured up the tap and yep its over size so i buy a set of presto taps taper second plus so now i have 4......... then after i got this set i rembered about my other box and went in there and found anougher 5 so yep i now have 9 off 1/4 bsp taps feel like a right mellon anyways thats my day
Tel	20/05/2012 23:03:24
157 forum posts 28 photos	Still, you will be way in front if you happen to break 8 of 'em!
Springbok	21/05/2012 11:55:02
879 forum posts 34 photos	Sounds a bit like my wife when she goes shopping never checks the cupboards first and walks round thinking I better get 2 of these. When I unpack for her I say but you already have 4 of these. Oh well never mind. Mich been there cap, T Shirt and lots of spares in the workshop, even ended up with 2 rotary tables at one point I got carried away at a club auction. Bob
David Littlewood	21/05/2012 15:55:38
533 forum posts	Michael, Worth bearing in mind that ISO metric taps are always over nominal size, by design. Don't think this is generally true of imperial taps though. David
Tony Pratt 1	21/05/2012 17:52:25
2319 forum posts 13 photos	Hi David, what's the thinking about oversize metric taps by design? Tony
mick	21/05/2012 18:43:45
421 forum posts 49 photos	you were using a parallel thread tap and not a BSPT

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