THE BEST WAY TO SHARPEN SPOT, CENTER & SMALL DRILLS ON A LATHE
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- เผยแพร่เมื่อ 20 ต.ค. 2024
- See my newly designed set up to enable the regrinding of spot drills, center drills and very small drills on a lathe. This method allows you to get a near perfect factory grind on these tools, even carbide spot drills! It also allows them to be carefully reground so as to remove the least possible material, therefore extending the life of the tools.
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Very neat trick. Much better than the manual approach.
Unlike many other users I see you protect your ways while using abrasives (so do I).
Wonderful DIY video! :)
Gday Steve, great job mate and really appreciate you sharing, please keep the videos coming, cheers Matty
Hi Matt. Thanks. Regards Steve
Lovely work Steve. I like the way you think through these solutions and get the most out of your lathe. You've shown their is no need to buy other machines all the time.
Hi Steve. Thanks Regards Steve
Brilliant! Thanks for the idea and great video
Cool ideas, thanks Steve!
Hi, Thanks for watching and for your encouraging comments. Regards Steve
Very nice Steve, i like that angle of the shop 👍👍
Hi Steph. Thanks. I used my Nikon Keymission 170 action camera for that. It has a super wide angle lens. I only just thought about using it recently. Regards Steve
This is a great idea! So simple to do.
Hi. Thanks for watching. Regards Steve
Great idea! Thanks, Steve.
Bloody Brilliant as always mate. Bravo 👏
Hi, Jason. Thanks. Regards Steve
I really love your content Steve, and always learn something......cheers from USA, Paul
Hi Paul. Thanks for watching and for your encouraging comments. Regards Steve.
Very nice! Thank you for sharing this idea!
Great tip Steve, those tiny bits can be a real bear to sharpen when you are low on spares and need to git er done. Cheers!
Class Steve, really good I like the idea of the idea using a diamond wheel instead of an abrasive wheel which would fling abrasive all over the place..
Graham.
Very interesting setup! I’d be curious to know how you’re putting in the secondary bevel to eliminate friction and contact of such a large bevel?
nice setup and thanks for the tip
You come up with some incredible ideas Steve. Thanks for sharing them with us. I would like to try sharpening drills. I normally just replace them, but do keep all the dull ones just in case. Cheers Nobby
Hi, Thanks. I'm OK with sharpening medium and larger drills on the bench grinder, but not the small ones. There are some good videos on TH-cam on how to grind them. One of the best is on the channel 'Tom's Techniques'
That's excellent Steve, top class job. I must make myself that set up on my Boxford, I like the look of that round vice too, cheers, Dave
Hi Dave. Thanks, you can buy the round vice from RDG. Here's a link.
www.ebay.co.uk/itm/293752953713?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=_KdJTK7KQq6&sssrc=2349624&ssuid=qosIqqr_Tcy&var=&widget_ver=artemis&media=COPY
@@SteveJordan That's great, thanks Steve!
How foes the relief is made? This is not shown.
Absolutely brilliant Steve. Thank you so much for your wonderful contributions. We're all so blessed to have you helping us all. That new camera angle from behind the lathe is great too. Any idea haw many collets you'd need to sharpen a full set of drill bits from 1/8" up to 1/2" ?
Hi, Thanks. I'm not sure about the number of collets. I suppose you could cut down on the number needed by making simple brass collar type components that fit into a larger collet. These could be accurately drilled for certain diameter drills and have a locking grub screw. I haven't looked into it yet, though. It's just another idea. Regards Steve
What a brilliant tool. Can you tell me how small in size have you sharpened Mr J? Thanks for sharing this video.
Nice work, might have to try that - the wd type 40 oil made me laugh
Hi Sydney. Thanks. Regards Steve
Another beauty.
I do like this set-up, and have assembled one for myself. Used it a couple of times. There is one small issue, Steve, and that is the vice is held at an angle with just one fixing through the vice and into the steel bar. I've had one mishap where the friction between the back face of the vice and the square bar was not enough to stop the vice from moving during a grind. To solve this I've put another hole in the vice chassis and tapped it m6, now I can put a second fixing in to stop the vice rotating about the one fixing. OK I only have one angle, but ten degrees seems to be about right for drill sharpening.
Hi Rich, Yes, that's a good idea. I will probably do the same, although I haven't had any problems with it yet. Regards Steve
Great setup! Just placed an order for a cup wheel. Any thoughts on how to grind split points?
Hi Miguel. Thanks. I haven't thought of doing these. Just centre drills and spot drills, really. I have another setup for the Chinese Mini Lathe to show later this week. Regards Steve
Well I like the look of this approach Steve, but what about relief behind the cutting edge? Your method looks like it cuts a perfect conical shape at the cutting edge?
Finally I can set up forsmall center drills. Genius Steve. About what grit is your cup wheel? Thanks, Greg
Hi Gregory. Thanks. I can't remember the grit of this wheel. I wish I had written it on the side when I bought it some years ago. It is a very fine one, though. I have coarser ones, but I haven't tried those yet. Regards Steve.
I'm pretty sure it's a 600grit wheel.
@@SteveJordan Thank you Steve
I'm unclear as to how you are maintaining the cutting clearance on the end of the tool. Are you just following the existing clearance by feel?
The angle is set on the vice. To get it correct in the first place, one has to blue the end of the tool and do a test grind pass. This only has to be done once on the first tool, as a line is scribed on the diameter of the vice, which then lines up with the brass part that I screwed on the back end. Then, one can set it for all future tool grinds, without the need of marker blue.
@@SteveJordan OK, I see. I was thinking in terms of helical clearance but these tools apparently have a faceted clearance. Thanks.
Since wehen drill bit do not have helical clearance or just relief on the back
Hi Steve, many thanks for the tool and cutter conversion over your lathe. I spent so much time making a standalone tool and cutter grinder years back should have thought of this earlier :) Btw why you extended the collet holder with long spindle which may get in the way taking out and insertion?
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Wont this just grind a cone? How does it achieve back relief? Maybe I'm missing something
I wonder same thing, relief is not shown how to make with this setup. A cone will not cut anything
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Do spotting drills not need a relief/clearance angle?
That's taken care of with the angle of the vice I believe
I think that just provides the point angle. It's not possible to provide cutting clearance by rotating the drill on its axis alone, since that produces a cone.
I am just wondering if spotting drills can get away with zero clearance since they are mostly used for shallow pecks. I'm skeptical, but that's the only way I can explain this process.
The clearance is derived by the angle that is set on the round vice. It is tilted down at the back end and locked into position before starting. If you watch the video, you will see this. I get such perfect tool grinds, people cant tell the difference from a new unground tool.
@@SteveJordan one has to wonder how many times you can sharpen a drill by your method before you run out of clearance from the factory grind.
Hi Ap jawad bahi ha
Now You've Got All This Equipment, Make Something Interesting, Like A Locomotive 🚂, 😅😅😅
Hi Patricia. No thanks, I can't see anything more boring than making locomotives or steam engines! I like making things that I can produce in a day and actually use for something good and practical. Those who make locomotives or complicated steam engines are highly skilled but come across as boring to me. They spend many months making them and can only really get rewarded by just looking at them or displaying them. I like to see them, though, but making them is just producing unessesary unusful clutter. It's not for me!!
hey Steve you got that right best way! i love your idea of using dial indicator for precision thank you
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