A CNC Precision 4-Facet Drill Sharpening Jig
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- เผยแพร่เมื่อ 17 ต.ค. 2024
- Drill sharpening has always been a little problematic for me and after watching various other people's videos I think I have combined most of the ideas and produced a sharpening jig that is working very well.
The jig is produced from a Solidworks model and then milled on the CNC machine. It features a 10mm guide that can be adapted to just about any grinder with a work surface which allows the jig to slide making the sharpening process very smooth. The guide is offset from the edge of the jig by a different amount for each face of the jig to allows the drill to be as close as possible to the grinding surface for each of the relief angles. I have found that the best relief angles are around 12 degrees for the primary facet and around 45 degrees for the secondary facet.
A video that shows the alignment process a little more clearly is posted here: • A CNC Precision 4-Face... .
All the examples show drills being ground from scratch but in practice, after a drill has been dulled, only the primary facet will need just a slight touch up to keep it sharp. That is a single setting on the grinder/belt sander will suffice for over 99% of the time.
Alex please keep in in the loop as to when this becomes available again. I have the sorby sharpening system and this would be fantastic addition to the system. Great work
Hello Tale - for your info, I have uploaded the files to dropbox in case you wish to make one for yourself. The link is in the header above.
@@Alex-ok7mg I can't find the link to the files on dropbox, am I being stupid? Please consider re-uploading them if they've been taken down, they would be so useful for Proedge users who have their own means of getting one machined.
Top video
I purchased the jig as its available to buy from sending a message to this guy
Very helpful
My drills are sharp and ready to use
Thank you
Bill Born
Just what I have been looking for my ProEdge. A great set of Videos!!
You mention you have posted the the files to make my own on 'drop box?' What is that and how can I find that? My son is a machinist and he can make one for me. Thanks!!
I can't find a link to files on dropbox either! It would be really helpful if they could be uploaded, this is just the thing I need for sharpening drill bits on the Proedge
Alex, You need to make another video but from above the drill bit, showing a top view, so everyone can see the angle of the flutes while you are sharpening.
Yes, I thought the same after I posted it. I did another one to show just what you recommended, here th-cam.com/video/bwu3pNVIUNU/w-d-xo.html I really would like to do another video as this one is not too hot!
@@Alex-ok7mg, thank you!
Hi
Getting back to you on how i went after i purchased the jig
I watched your video a few more times in hoping to understand it better
I set the angle for the Primary Facet about 12 degrees
Applyed the drill bit, and got the right
Turned the jig around like you did in the video
Next i set the angle for the Secondary Facet between 35 and 40 degrees
The problem im having is i dont understand is, as the drill moves into the rotating sand paper, exactly what area of the drill bit face do i sand to create the Secondary Facet
Ive looked and looked at your video to see or understand that part but i dont understand, which i cant achieve to finish off the sharpening
Could you please explain in some way of what im not understanding.........
Thank you
No worries. The benefit of grinding the primary facet first is that it provides you with a reference plane in order to cut the secondary facet. So once you are happy with the primary facet turn the jig around (as you have) but now align the cutting edge of the primary facet to the edge of the jig and then grind away the secondary facet.
So, for example if the X axis is the direction that you slide the jig along, then the cutting edge of the primary facet should be aligned along the X axis (which is the same as the edge of the jig) parallel with jig .
I have a posted a video into my dropbox that demonstrates the method a little better:
www.dropbox.com/s/m6nu1u4kuzi3ak3/Aligning%20the%20Cutting%20Edges.mp4?dl=0
Hi Alex wondered if you were able to make more of your drill nit cutting jigs? Many thanks
Hi Richard, I have made a couple and sold them. I am making a few other things at the moment, but will put it on the list and let you know when they are available. Thanks Alex
Hi Alex, are you still making these for sale? If so Please get back to me with a price and when they'll be available. Thanks
Hi
I would like one of these jigs for my pro edge, fed up with guessing the angles.
Please let me know when and where they are available
I'm hoping to have them available in about a week or so. Alex
@@Alex-ok7mg how much will they be in p &p
Thanks Alex. Let me know when available.
Thats super cool thanks. Your video has helped me in many ways.
I have just made a pro-edge style sharpening system for a cheap belt grinder and am researching making a drill sharpener or it. I had a similar idea to your implementation, except with a standard 59 degree grind, which is what I will make ( I need it partly because I have blunted several drills making the sharpening system components).
Its refreshing to know that the idea works, so thanks for that. Also learned from your video to set the table at 12 degrees (clearance angle?), which I kind of knew I must do but wasn't confident about.
What is that angle setting device you use as I was pondering how to make something to set the table angle, but would certainly buy something similar to the one you use?
Thanks
Thanks for the kind comments. Just watching the video again, I realise how bad it is and wish I could have done a better job but your points are correct. The other feature of the jig that isn't apparent in the video is that the slide is offset from one leading edge more that the other to account for the greater angle when grinding the second bevel. Otherwise the greater angle would cause a large gap between the jig and the belt making it difficult to hold the drill bits firm when grinding the 2nd facet - that is why you see me flipping it around just as I begin to adjust for the second facet.
Since making it I found it very useful and now find I can "touch up" the edge of a drill in seconds compared with time it took setting up the other jigs I have purchased over the years.
@@Alex-ok7mg Thanks for your answer. I will check if I need an offset. Will research the 4 facet grind too, but right now my brain is overloaded with all the info for a 59 degree grind.
@@danceswithaardvarks3284 The nice feature that the pro-edge has is that all the angles that I have used are preset using alignment / index holes that set using a spring loaded pin.
Hi Alex
Just wondering how I can get hold of one of these jigs for my Robert Sorby
What do you do when sharpening short 2 and 3 mm bits
Hi Andy, rather than make individual items we are looking at having a large quantity made so this will hopefully make them available to those who want to purchase them in the near future.
Regarding short 2mm and 3mm drills, it is possible and I have done it, the important factor is to make sure that the edge of the jig is close to the belt as possible and when I make the jigs I make sure that is the case. In the case of the small drills, the surface area of the primary face is so small that I am not sure there is much to be gained from creating a second facet, but you can if you are very delicate in your approach. This is the reason that when grinding the 2nd facet that you flip the jig around so that with the greater angle the drill you are sharpening remains close to the edge of the sorby belt.
@@DaveS71 Well we will have a prototype in a week or so and then production. So at least 4 or 5 weeks I think.
Andy, I have added a link at the top where you can purchase if you wish. Alex
Hi Alex, I too am interested in one of these jigs. Looks like 3 weeks ago you were traveling and didn't know when you would get back to making them. When you do would you let me know and go ahead and put me on the list for one also. Thanks and safe travels.
Thanks Jon, Yes we are looking at making a batch of these and I will let you know, hopefully in a few weeks.
Alex
Love the Drill Jig but can’t seem to find it on EBay, are you still making them? Would love to purchase one! Thanks
Thanks Josh - I have had a couple of requests so it may be worth while making a couple, however I today I discovered that after firing up the mill that I have lost a couple of controllers - I will see what I can do to fix them and let you know.
Hi been trying to find the jig on eBay but can’t find it , please send direct link or can I purchase it directly from you .
Hi Alex ... I am still looking for a drill sharpening jig ... are you still making these? Please let me know if you would be willing to make one for me as I do not have a CNC setup .. thanks .. Chris
Hi Chris, the jigs are in the throws of being made now and I hope to be able to share progress in the next month or so. Thanks Alex
Thanks Alex ....I will look forward to it ...Chris
Without a stop and angle stop this is not great. Is it for sale?
Hi Alex, have tried looking on eBay but cannot see this jig, if you are selling them could you post a link here please.
Sorry Bowman, unfortunately I only just took it down two days ago as I have gone away for Christmas. I shipped a few so you only just missed the window :-) I will hopefully put it back in a few weeks.
Thanks for the reply Alex, if you remember perhaps you could give me a nudge when it does go back on eBay, in the meantime have a great Xmas, Alan
Hello Bowman, I have supplied a link in the description where you can purchase the jig if you still wish. Alex
2 years ago i wanted to buy one and still dont have non 😭 and do want one 😔 so Alex when you gona make one for me ??? let me know please i am real intrested.
Hello andrzeg - well the good news is that we are looking at making a large batch of them, so hopefully soon we can make them available to you.
@@Alex-ok7mg it would be fantastic 👌 i did wanted it for so long now. i did try to make jig like this from wood. is not same. tormek jig is very good but so slow to use. yours look very easy and fast and is small.
Can you still get these cheers
I arranged to have over 200 made and sold them all unfortunately. I'm sorry, but I don't think I will be getting another order.
Hi did you make any of these ? Did I miss them ?
Yes, I finally have. I will be putting them up for sale shortly.
Can you let me know when they'll be available also ? Thank you.
Hi Lee, yes week after the 23 September.
I hope that is okay.
Alex
Hi Alex, forgot all about getting back to you in regards to the jig. Are they avalible and what is the cost ??
Hi Alex I never heard back from you about availability and cost. Could you please let me know? Thanks, Lee dreamslammer@comcast.net
Hi are these Jigs still available... Nothing on ebay. Very interested ?
I am away for a few months, but when I return I will see if I can make a batch and let you know.
Thanks
Alex
hi AlexI am interested in purchase of this jiglet us know how. I checked ebay and no go.
No worries. I will produce a batch when I get back.
how i can contact you
you know to buy one of you
i am uk base
brighton
Not on Ebay can I purchase it of you direct really good tool thanks David.
Hi Buddie, If you search for "A Precision CNC Milled Four Facet Drill Sharpening Jig" you will find it on eBay. Thanks
Are you still making these? Cool tool I would like to buy one.
Sorry for the late reply Marc - but I am not at home at the moment and expect to be away for a few months. I have posted the Solidworks models and CAM outputs if you are able to make your own.
nice to see "old school" bare hands at work. the younger generation youtubers all seem to wear those nitrile gloves even just for unboxing something.
interested in your jig. How can I get the purchase information?
I will post a note in a few weeks indicating it is available. Thanks
Hi Alex, is the drill sharpening jig going to be available again please?
Sorry, I am 3000km from my milling machine at the moment :-)
I promise to make one for you on my return.
Thanks
Alex
Thanks Alex, how much do you sell them for please?
I am not sure at the moment but it will be on ebay.
Look forward to it, have you considered selling the CNC file, I do have access to CNC machines.
Better make a few of them, I gotta have one, too!Please.:-)
I'd be keen for one when you produce a batch
Thanks; I will let you know once they are available.
I have them available to purchase. www.ebay.com.au/itm/114829513549
Thanks
Alex
I'm rather late to the party! Do you still make these for sale please?
I do - and had the jig for sale on eBay but because I am travelling I had to nlist it. My intention is to put a couple up for sale again in a couple of months.
@@Alex-ok7mg Many thanks for your quick reply. I shall look out for them when you return.
John, I have added a link in the description where you can purchase the jig if you are still interested. Alex
Hi again not on Ebay please put them back on thanks David
Sorry Buddie, it was up for a long time but I had to take it down because I am taking a holiday :-(
OK thanks is it to go back on at some point if you do will buy at once thanks David
Hi Buddie, Yes, in a few weeks.
Thanks////
Too much guesswork for me. There's no way of ensuring that the cutting edge is even. Definitely a hobby routine.
That is a good point but I have found that if both edges have similar pressure applied and similar number of passes for each cutting edge that you can get very close to a perfect centring of the point.