MadModder
Gallery, Projects and General => How to's => Topic started by: TLGriff on October 20, 2013, 11:26:16 PM
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Here's a little video I threw together where I discuss the geometry of turning and facing tools for the lathe and demonstrate how to grind them.
Tom
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Tom,
Nice demo.
No doubt there will be purists around the world having kittens while watching that. 'You can't grind lathe tools without a jig'. Guess you just proved them wrong.
Dave. :thumbup:
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Thanks Dave.
Surprisingly, I don't hear that much from the purists. I guess a picture (or video) truly is work a thousand words.
Tom
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One tip I would like to add
people often ask how do i know when i have ground up the edge of the tool without taking it off the wheel , just look at the sparks traveling round the when when they hit the top of the tool and bounce off you have a full contact up to the edge i.e. sharp , it helps to prevent multiple angles with repeated stabs at the job hold it there ( if you can due to heat ) and let the sparks tell you
and to back up Tom safety glasses must be worn
I did a grinding wheel course and when you see whats in the grinder tray magnified you will be surprised its dust yes and metal turnings just like that which comes off the lathe only in miniature not nice things at all
Take care
Stuart
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Stuart,
As I mentioned in the video, the ability to remove the tool from the wheel and place it back in the same position is the part of hand grinding that only comes with practice. Little tips like the spark thing and touching the bottom of the tool to the wheel first greatly aid that ability.
Like anything else requiring good hand/eye coordination, learning to grind well by hand requires lots of PRACTICE!
Tom
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Tom that's a great video, probably the best I've seen on grinding lathe tools!
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Thanks Pete, I'm glad you enjoyed it.
Tom
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Thanks Tom that's a great video for a new guy at this hobby like me.
Lyn.
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Thanks Lyn, you are who the video is directed at.
I am also hard at work on a website that will include what I call project tutorials, where drawings will be provided of useful projects that the viewer can use to follow along while the project is built from start to finish on a video tutorial. The projects will be selected to include a good selection of machining practices and will range from beginners level to advanced.
I am better at machining than web design, but I'm stumbling along and hope to have the site online with the first project tutorial within the next month. The site will also better organize my instructional videos and include one of the largest links page on the net.
Tom
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Another newbie here, who really appreciates your video, and thank you Tom for sharing.
John
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Glad I could help John.
Tom
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Thanks Tom
Great video and easy to follow.
Paul
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Thanks Paul, I appreciate the comment.
Tom
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Thanks Tom. Enjoyed your video very much
Barry
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Thanks Barry, glad you enjoyed it.
Tom
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Let me add my compliments to the list. Great video, as all your videos are. You have a natural talent for teaching. I would love to take a class from you.
I was a technical instructor in the AF for many years. Talent like yours is rare! Your love of teaching and confidence in your knowledge show through!
I can't wait to see your website! Best of luck with it!
Chuck
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Thanks Chuck.
I'm making good progress on the website and should be shooting the first project tutorial this weekend.
Tom
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Just got yourself a new subscriber Tom, I'll just have to watch all the rest of your videos now :headbang:
Gary
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Thanks Gary, that should keep you out of trouble for a while. At last count there was a bit over five hours worth.
Tom
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Hi
Well presented, and nicely ground tools
Cheers David
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Thanks David.
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Hi Tom,
Great video but I have to take slight issue with you over hand held versus decent tool rest, (not that awful bit of cr*p that comes fitted to most of the grinders). You quite rightly say it takes practice to grind and it is indeed a very good skill to learn, but with a tool rest that you can set to the desired angle you don't need to spend time learning and can get repeatable results much more easily. Surely it is the aim of man's intelligence to make things to make life easier and I can't help but feel a tool rest is just such a thing.
Ned
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Ned,
My goal is to teach basic skills first, and learning to grind freehand is one that is very useful in the shop. Once that skill is developed, there is nothing wrong with using fixtures to make ones life easier, if you have such fixtures at your disposal.
Glad you liked the video.
Tom
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Tom,
Love the videos :)
What have you done to the brake on that hlv? It stops in a fraction of the time my one does! Do you not oil the cork or have you found a super replacement?
Bill - who's hlv-h takes several seconds to stop from 3000rpm!
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Thanks Bill.
The brake just needs regular adjustment and oil to work properly. There is a section in the operators manual that tells how to do it.
Tom
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Great video thank you.
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Thanks for watching.