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28th January 2015, 12:47 PM #61GOLD MEMBER
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Yes that video. Well im out for next 3 hours so ive left it to download. Cant be any more patient than that!
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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28th January 2015, 03:25 PM #62GOLD MEMBER
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Well I waited 4 hours and still nothing.
Do I need to be geologically patient?
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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28th January 2015, 03:38 PM #63GOLD MEMBER
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- Jul 2010
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Maybe you dont have an MP4 player?
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28th January 2015, 03:49 PM #64
Try the direct link... worked for me.
http://vid38.photobucket.com/albums/...ps240e0f38.mp4
Ray
PS.. I like the internal 2 start acme thread.... very slick.
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29th January 2015, 09:51 PM #65Senior Member
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- Sep 2008
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Simon, I like to actually measure tapers, internal or external, rather than trail fitting using bearing blue or other mediums where you never really know where you are. The tolerance on machine tool tapers applies in one direction only, where the rate of taper on external tapers should only increase above nominal and decrease on internal tapers and is generally around .0001"/in.
I have ground a lot of morse and other tapers using a sine bar to check external and the ball method to check internal. Sorry I can't offer any advice on how to view the video, I am not a computer person.
Stuart, the internal grinding wheel is just a standard 60g Aluminium Oxide which is a bit dirty and glazed after grinding a fair bit of material from the bore.
Lex.
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30th January 2015, 01:13 PM #66GOLD MEMBER
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Hi Lex, never ground any tapers and only ever made one taper which was to modify a flywheel which had an incorrect taper for my application. Making tapers etc to a known standard is always going to be better than merely trying to copy an existing taper. That's what standard are for. Desperately trying to work out the taper on the spindle of my sg. Measured it a few times with a vernier and bore gauge and consistently get 2.05" per foot. Can't be right though, what so of standard is that!?
Cheers & thanks for sharing. BTW, I did end up watching the video!
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th January 2015, 04:07 PM #67future machinist
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[QUOTE=simonl;1840415 Desperately trying to work out the taper on the spindle of my sg. Measured it a few times with a vernier and bore gauge and consistently get 2.05" per foot. Can't be right though, what so of standard is that!
Simon[/QUOTE]
How exactly are you meausing the taper with rollers and trig ?BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
Andre
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30th January 2015, 05:39 PM #68Philomath in training
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Why not? 2" per foot is not a terrible number. For a grinder spindle there is not an over-arching standard (MT or JT), so it could be.
While I'd prefer to be in a position to measure tapers there are times when fitting one taper up to another is a reasonable way to to do things - the grinder hubs I made are unlikely to even be used on another machine, so provided the taper matches the spindle it should all be good.
MichaelLast edited by Michael G; 30th January 2015 at 05:40 PM. Reason: better word
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30th January 2015, 05:58 PM #69GOLD MEMBER
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Well, no and may be half my problem! The large end of the taper is so close to 1.000" that I'm calling it 1.000". I measured that with a vernier. It's not the most appropriate method but I have measured it about a dozen times and I keep getting the same figure.
The small end of the taper I am measuring by carefully dragging a telescopic bore gauge through and then measuring on a vernier. That's probably an OK method to use. I'm also getting consistent results with that too.
To measure the length of the taper I'm simply placing the arbor on a flat and using the depth rod on the end of the vernier to measure. All measurements are made with the arbor because I find it easier to get measurements from.
Consistently getting 2.05" per foot taper. If it was maybe 2.01" or 2.02" then I'd be happy to call it a standard 2" per foot taper. Over the close to an inch that I'm measuring the taper, the 0.05" discrepency relates to about 4 thou difference. That's still 0.1mm which I'm sure I'm not that far out.
What a stupid taper. The rest of the imperial world was using 3" per taper at the time. What was wrong with sticking with that!?
Anyway, that's enough about that. This ain't about a Billy Elliot, it's about a Robot!
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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