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Worn degree marks on compound.
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Thanks Mike, this is just what I needed. I have saved your PDF for future reference. It never occurred to me to make an engraved ring. I had been trying to figure out how to engrave the base of the compound but I much prefer your solution. Now on to devising an indexing mechanism for the spindle.“I know lots of people who are educated far beyond their intelligence”
Lewis Grizzard
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My "as supplied" top-slide angle markings are not bad at all and do fine for most stuff - as here:
Here is the set-up I use when I need it reasonably accurate. The protractor vernier is accurately calibrated to 1/10 of 1 degree (60/10 = 6 minutes of arc = 0.00175" inches per inch ~ 1 in 572) using the side of the top-slide (which is parallel to the axis of the top slide dove-tails. The protractor uses the face of the chuck (which is square to the spindle axis) as a reference.
It is quick and accurate.
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Originally posted by oldtiffie View PostMy "as supplied" top-slide angle markings are not bad at all and do fine for most stuff - as here:
Here is the set-up I use when I need it reasonably accurate. The protractor vernier is accurately calibrated to 1/10 of 1 degree (60/10 = 6 minutes of arc = 0.00175" inches per inch ~ 1 in 572) using the side of the top-slide (which is parallel to the axis of the top slide dove-tails. The protractor uses the face of the chuck (which is square to the spindle axis) as a reference.
It is quick and accurate.“I know lots of people who are educated far beyond their intelligence”
Lewis Grizzard
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I agree with Oldtiffe
Check to see if the left side of your Tool-slide is parrallel to the positive Gib.
It looks like it is made that way from your picture.
On my lathe, I ground the side surface(as seen in the picture) while supporting the way with dowel Pins.
I have no markings because I dropped in a taper attachment cross-slide, but did scribe a 29.5 degree threading line.
Using a protractor is fast and more accurate IMHO.
I do not remove the jaws from the chuck , but just use the area between 2 of the jaws.
Or you can use a 1-2-3 block as a chuck surface extension.
The same block gives the Tool post a perfect 90 relationship to the spindle centerline
Rich
RichGreen Bay, WI
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Here is an article that may be of use to you regarding graduated collars
I just saw that Mike Burdick beat me to it with the same information.
Errol GroffLast edited by Errol Groff; 05-05-2015, 12:45 PM.Errol Groff
New England Model Engineering Society
http://neme-s.org/
YouTube channel: http://www.youtube.com/user/GroffErrol?feature=mhee
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Originally posted by Paul Alciatore View Post
If anyone reading this is interested, and discovered the 8 year old links are no longer viable, this is an updated one for the Avery clear project paper:http://www.avery.com/avery/en_us/Pro...ank|0||Product Number|1&refchannel=fc0c1828c503a110VgnVCM10000021 18140aRCRDLast edited by Dave C; 05-06-2015, 12:25 PM.“I know lots of people who are educated far beyond their intelligence”
Lewis Grizzard
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Dave, apologies. I guess I was implying that and I should have been more polite as I do know the problems with the search feature here. It sucks. I often can not find my own past threads. But I do like to encourage people to use the search before posting.
Actually, I cheated as I remembered that Evan had posted that thread and so I included his name in the search. I guess that helped.
Again, I am sorry if I was out of line.
Originally posted by Dave C View PostIf you are implying that I didn't bother to search before posting this thread you are wrong. I tried multiple searches before starting this thread, none of which turned up anything as useful as the link you provided. Thank you for that. The search feature is a great tool, especially if you get lucky and happen to enter the correct, arbitrary elements.
If anyone reading this is interested, and discovered the 8 year old links are no longer viable, this is an updated one for the Avery clear project paper:http://www.avery.com/avery/en_us/Pro...ank|0||Product Number|1&refchannel=fc0c1828c503a110VgnVCM10000021 18140aRCRDPaul A.
SE Texas
And if you look REAL close at an analog signal,
You will find that it has discrete steps.
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Originally posted by Paul Alciatore View PostDave, apologies. I guess I was implying that and I should have been more polite as I do know the problems with the search feature here. It sucks. I often can not find my own past threads. But I do like to encourage people to use the search before posting.
Actually, I cheated as I remembered that Evan had posted that thread and so I included his name in the search. I guess that helped.
Again, I am sorry if I was out of line.Last edited by Dave C; 05-07-2015, 02:05 AM.“I know lots of people who are educated far beyond their intelligence”
Lewis Grizzard
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I don't know about Sister Mary Anthony, but I KNOW Sister Cecilia could. But that was 5th or 6th grade, IIRC.
Originally posted by Dave C View Post...<snip>...
I'd like to go back to 3rd grade and ask Sister Mary Anthony to diagram that sentence.Paul A.
SE Texas
And if you look REAL close at an analog signal,
You will find that it has discrete steps.
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Isn't this site wonderful, it's remarkable that one would find an apology, and a recipient address accepting said apology, it doesn't happen much in the world, btw I often due to an aspergig mentality blurt out what I'm thinking and it often comes out as being rude, facetious, sarcastic or just plain nasty, even though I don't actually mean to be and am not in the slightest bit nasty or mean, I just have a big mouth!, well done gentlemen.
I digress, as I often do, my old harrison top slide I has a worn degree collar, I was thinking, oddly
There was an old dean smith and grace in work that had been modified, there was an index pin hole drilled through on the top slide at all the useful angles, you just swung it till the pin went in.
Mark
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Originally posted by boslab View PostIsn't this site wonderful, it's remarkable that one would find an apology, and a recipient address accepting said apology, it doesn't happen much in the world, btw I often due to an aspergig mentality blurt out what I'm thinking and it often comes out as being rude, facetious, sarcastic or just plain nasty, even though I don't actually mean to be and am not in the slightest bit nasty or mean, I just have a big mouth!, well done gentlemen.
I digress, as I often do, my old harrison top slide I has a worn degree collar, I was thinking, oddly
There was an old dean smith and grace in work that had been modified, there was an index pin hole drilled through on the top slide at all the useful angles, you just swung it till the pin went in.
Mark“I know lots of people who are educated far beyond their intelligence”
Lewis Grizzard
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