Thank you for posting this. Very clear and informative. 👏👏👍😀
@andregranum7896
6 жыл бұрын
Such a nice, clean workshop! And the "vintage" intro's fun.
@every1665
4 ай бұрын
I've been trying to cut a two start (55 degrees) thread on a 1/4" stainless shaft. The thread depth was quite hard to cut down to the core diameter required with 'tearing' happening as I tried finishing the thread. Cheating was found to be a marvelous thing in this case. I ground the tool to about 52 degrees, put more top rake on the left-hand of the tip (the cutting edge for the 'topslide' method) and essentially cut the thread as normal with the extra top rake allowing cleaner cutting. The right hand side of the tool doesn't really cut (in theory) so you can safely have negative rake on that side of the tip. Hope this helps someone having this problem.
@user-lz9cu7rn4k
7 ай бұрын
I'm new to model engineering and have found your video's very helpful and interesting. Would you please consider makeing a video on how to set up the drip feed oilers on the myford ml7. I also have a Dore Westbury milling machine which requires setting up. Would you consider doing a second video on how to accurately set up the table. Many thanks
@warrenandrews192
2 жыл бұрын
Thanks Ade, very useful.
@CreaseysWorkshop
6 жыл бұрын
I put an extra mark on my cross slide at the 30 degree mark on the compound. You can use that mark to get steep angles that are out of the normal range. What I do is to move the compound round till it is at say 30 degrees by the normal mark, then I look at my other mark and add ten degrees at a time, 40, 50, etc and then the final fraction. By this time the normal mark is off the edge but it doesnt matter because I am now indexing off the second mark. Hopefully that makes sense. It's a bit tricky to explain! I like your idea of using the protractor though, mainly because I find it very difficult to see the numbers! I always need my torch.
@AdeSwash
6 жыл бұрын
Thanks John, yes I think I understand your solution, I will give that a trial.
@juanrivero8
6 жыл бұрын
Good grief. I learned most of what I know from Sparey's book. But really most books are vague. There are many reasons to set over the top-slide, such as cutting a taper. The books say "set the topslide to half the taper angle" and leave it at that. Yes-- but half the angle from what axis? The book is mute, unless the author draws you a diagram. So you were off by the complement of the angle, and I always have to draw my own diagram.
@robinturner2300
6 жыл бұрын
Too complicated maths... Simply subtract 27.5 from 90 and the difference is 62.5
@AdeSwash
6 жыл бұрын
Hi Robin, thanks for the simplification, I have dyscalculia so the maths is never going to be one of my my strong points - Ade
@robinturner2300
6 жыл бұрын
Ade Swash no problem... It's worth simplifying to make it easier. In a triangle the three angles always add up to 180, since we know one of them in a right angle triangle is 90 then the other two also add up to 90. If we know one angle we can work out the other simply by subtraction from 90. Also each of these internal angles is complemented by an external angle which adds up to 90. So subtraction from 90 works here too. The book Screwcutting in the Lathe by Martin Cleeve explains the much more complicated maths and the reasons for angling the tool and is worth a read for those interested. If you want complicated calculations try working out the compound angles for the individual timbers in a hipped roof... Nice style for the video by the way...
@chrisstephens6673
6 жыл бұрын
Even simpler, just leave the top slide at 90 and cut threads by going straight in using only the cross slide. It really isn't the problem that some less experienced people seem to think it is.
@npaisnel
2 жыл бұрын
@@chrisstephens6673 AH .yes..and then you get into the debate about using the plunge cut as you suggest, or using the angle meshing..and if you do use th angle method..do you use the exact half angle, or fractionally off the angle, ...to allow relief ;) I just do not know..seems to be good arguments for both. Guess it is what works for you really
@chrisstephens6673
2 жыл бұрын
@@npaisnel the answer is simple, you do it the way you feel comfortable with.
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