Awesome, thank you Brian, I hope you can find something of interest amongst my assorted engineering videos. Thanks for watching. Please enjoy. Regards.
Hello Dave, Another interesting video and great to see the variability of the edge finders. Thanks for taking the time to make this video. Take care. Paul,,
This is a great demonstration of the need for accurate hand to eye coordination. It’s all down to that split second moment. I can’t see that it could ever be possible to achieve 100% accuracy with a mechanical edge finder. Thank you for sharing such an interesting experiment. 👏👏👍😀
hi dave..nice video..in my home workshop I only use 3D tester which in my opinion is the only reliable way to have precision in the positioning of parts..the rest of the cheap systems in my opinion leave much to be desired in terms of precision and repeatability... greetings from the principality of asturias in spain and thanks for your time
@@daveticehurst4191 hello good day...HAIMER 3D TASTER www.haimer.es/productos/instrumentos-de-medicion/palpador/palpador-3d/palpador-3d-universal/palpador-3d-universal.html
@@TrPrecisionMachining Thanks for the information. Well outside my league for the occasional use I would have of it. Just received a quote for 1, 800 Australian Dollars.
I had seen another youtube vid that seems to work and is about free$$. I uses 1/2" rod (Turned Ground & Polished) and turned down one end about 1/2" to the ID of a small GOOD bearing to be pressed onto that end (my bearing happened to be 0.413" ID and 0.660" OD). Put 2 or 3 dots of red paint on the top bearing side. Then carefully move mill toward edge, once contact is made the bearing stops set zero then subtract half the 0.660" for the real edge and re-zero. While perhaps not rocket science accuracy it has come in close to the wobbler I also have.
Thanks for the view and your comment. I have seen the ballrace edge finder before, but a small word of warning when using it. The part needs to be oil and coolant free, as for it to work the outer race and the part need sufficient friction for it to work. Also too if it is a sealed bearing that has a rubber seal, you will get some resistance from that as well as the grease inside the bearing. But Hey, if it works for you well done. If you wanted to experiment, do a reading using a standard edge finder if you have one, then see if you get the same result using your ball race. If you don't have a stadard edge finder, use a ground pin and a slip of paper as a feeler gauge, just remember the the offset is 1/2 diameter of the pin, PLUS the thickness of the paper. Regards.
Hi Dave, very good results from the electronic unit, to put it into perspective, the average Mitutoyo CMM (Coordinate Measurement Machine) used throughout aerospace to commit parts into service (or the scrap bin), has a resolution or accuracy statement of 0.0002"/ 0.006mm (albeit that is over the entire measurement range of the machine in any direction!). Therefore 0.0002" repeatability in a home shop is not to be sniffed at! Cheers, Jon
I always wondered if doing this multiple times would cause the two contacting surfaces to heat up ever so slightly ? Edge finders IMHO are not precision tools like a DTI so if you really need to be precise then use a precision tool . If it just a hole to be drilled for a bolt or screw you could use a piece of cigarette paper between the edge of the part and a rotating end mill to find the edge of a part accurately enough for that job . Thanks for the great video Dave !
thanks for the demo. I will still keep my wobbler though for picking up pop marks, unless you have a better suggestion (discounting the optical jobbie, that's way out of my price range)
Hi Paul, thanks for the view. Funny you should mention an alternative to the wobbler point. I have already made a prototype of an alternative. ( Non Finger Bleeding type😊 ) Just need to improve on it. Watch out for it in the not too distance future. Regards.
Thanks for the question, I have 3 or 4 ideas for videos. Will try and get around to them soon. Trouble is that it is High Summer here in Australia, heat and other things to do are delaying me. If you subscribe you should get a notification as soon as one or more are available. Regards.
I wonder, does adding a light lubricant to the area where the edge finder touched the work provide more consistency by reducing any effect of friction.
Hi, that's a very good question, I have absolutely no idea. I will give it a try in next visit to workshop and get back to you with an answer. Thanks for the view and your comment. Regards.
Hi again, sorry in the delay. I have just tried it using the mechanical edge finder, I put a squirt of WD 40 on the part and finder and got some interesting results. out of 8 tries I got ZERO change on 5 and the other 3 were 2/10 ths, and that was the last 3, so perhaps the WD 40 had dripped off or evaporated. I also tried way oil but I think it was too thick, the sideways kick was very hesitant. Hope this helps. Regards.
Sir, I Beg to disagree. I have been in Engineering over 50 Years. I notice on your channel that you have no engineering videos. Are you a so called Armchair Mechanic ? Thanks for watching. Regards.
I have had similar results. I wonder if the mill vibration while running allows things to move slightly. On my machine I get more repeatable results if the gibs are tight. If probing Y then lock X. Same goes with Q and Z. In addition the finest resolution on mine is +/- .0002”, so any reading is subject to that tolerance. I often forget about that. On another machine I have about 10 x better resolution ( finer glass scales) and I often pick up apparent movement when I power up. Things move a little.
no need to be rude to him, I'm an engineer, but don't post videos. It was clear in your video that you made erroneous measurements several times. 10:05 , the edge finder lights up at 10 thou, ill give you 0.8. 10:37 the measurement was 6 thou. You called all of these 2 thou, because you weren't watching the DRO at the same time and went too fast, like the other user said. You didn't notice at the time but it is clear in the playback. Your real error is somewhere around 4-6 thou for the electronic.
Great info to know! Nice presentation Dave.
Glad it was helpful Mike. Thanks for watching. Best Wishes.
Excellent! Exactly what I was curious to see.
Glad I could help. Thanks for asking for it and watching it. Regards.
Your video is very interesting. Thank for sharing. 😊😊
Thanks for visiting. Regards.
Hello from California. Just got your address from Nobby. I've a lot of catching up to do. Thanks for the content....cheers.
Awesome, thank you Brian, I hope you can find something of interest amongst my assorted engineering videos. Thanks for watching. Please enjoy. Regards.
Good info Dave. for most of what I do I just use the STD edge finder. Cheers
Hi Randy, just stick with whatever method suits you best. Thanks for watching. Best Wishes.
Hello Dave,
Another interesting video and great to see the variability of the edge finders. Thanks for taking the time to make this video.
Take care.
Paul,,
Glad you enjoyed it Paul. Thanks for the view. Regards.
This is a great demonstration of the need for accurate hand to eye coordination. It’s all down to that split second moment. I can’t see that it could ever be possible to achieve 100% accuracy with a mechanical edge finder. Thank you for sharing such an interesting experiment. 👏👏👍😀
Glad you enjoyed it Andrew. Thanks for watching. Best Wishes.
hi dave..nice video..in my home workshop I only use 3D tester which in my opinion is the only reliable way to have precision in the positioning of parts..the rest of the cheap systems in my opinion leave much to be desired in terms of precision and repeatability... greetings from the principality of asturias in spain and thanks for your time
Thanks for sharing that information, any chance of a link to the product you use ? Thanks. Regards.
@@daveticehurst4191 hello good day...HAIMER 3D TASTER
www.haimer.es/productos/instrumentos-de-medicion/palpador/palpador-3d/palpador-3d-universal/palpador-3d-universal.html
@@daveticehurst4191 HAIMER 3D TASTER
@@TrPrecisionMachining Thanks for the information. Well outside my league for the occasional use I would have of it. Just received a quote for 1, 800 Australian Dollars.
@@daveticehurst4191 Hi Dave...here in Spain it costs 370 euros
Very interesting to see this demo David. Good advice to make several readings, and use the average. Thanks David. Regards Nobby
Glad it was helpful Nobby. Thanks for the view. Regards.
I had seen another youtube vid that seems to work and is about free$$. I uses 1/2" rod (Turned Ground & Polished) and turned down one end about 1/2" to the ID of a small GOOD bearing to be pressed onto that end (my bearing happened to be 0.413" ID and 0.660" OD). Put 2 or 3 dots of red paint on the top bearing side. Then carefully move mill toward edge, once contact is made the bearing stops set zero then subtract half the 0.660" for the real edge and re-zero. While perhaps not rocket science accuracy it has come in close to the wobbler I also have.
Thanks for the view and your comment. I have seen the ballrace edge finder before, but a small word of warning when using it. The part needs to be oil and coolant free, as for it to work the outer race and the part need sufficient friction for it to work. Also too if it is a sealed bearing that has a rubber seal, you will get some resistance from that as well as the grease inside the bearing. But Hey, if it works for you well done. If you wanted to experiment, do a reading using a standard edge finder if you have one, then see if you get the same result using your ball race. If you don't have a stadard edge finder, use a ground pin and a slip of paper as a feeler gauge, just remember the the offset is 1/2 diameter of the pin, PLUS the thickness of the paper. Regards.
Hi Dave, very good results from the electronic unit, to put it into perspective, the average Mitutoyo CMM (Coordinate Measurement Machine) used throughout aerospace to commit parts into service (or the scrap bin), has a resolution or accuracy statement of 0.0002"/ 0.006mm (albeit that is over the entire measurement range of the machine in any direction!). Therefore 0.0002" repeatability in a home shop is not to be sniffed at! Cheers, Jon
Thanks Jon, so glad you thought that it was good outcome. Best Wishes.
I always wondered if doing this multiple times would cause the two contacting surfaces to heat up ever so slightly ?
Edge finders IMHO are not precision tools like a DTI so if you really need to be precise then use a precision tool . If it just a hole to be drilled for a bolt or screw you could use a piece of cigarette paper between the edge of the part and a rotating end mill to find the edge of a part accurately enough for that job . Thanks for the great video Dave !
Hello Ian, you could be right about friction causing expansion. Thanks for watching. Best Wishes.
thanks for the demo. I will still keep my wobbler though for picking up pop marks, unless you have a better suggestion (discounting the optical jobbie, that's way out of my price range)
Hi Paul, thanks for the view. Funny you should mention an alternative to the wobbler point. I have already made a prototype of an alternative. ( Non Finger Bleeding type😊 ) Just need to improve on it. Watch out for it in the not too distance future. Regards.
@@daveticehurst4191 I've subscribed to your channel so I should get a notification when you upload it. will look forward to it 👍
@@paulrayner4514 Thanks for the Sub. Much appreciated as they have started to drop since uploading the latest 4 videos.😢 Regards.
@@daveticehurst4191 wow don't know why, for someone like me (none engineering background). You sir are a gold mine.
Miss your videos Dave, hope you’re well!
Hi Robert I am Working on it. I am fine. Thanks for your comment. Regards.
@@daveticehurst4191 Good to hear from you, no rush of course - just hoped you were doing Ok. 👍🏼👍🏼
Hi Dave are you intending to release any videos soon thanks Tel
Thanks for the question, I have 3 or 4 ideas for videos. Will try and get around to them soon. Trouble is that it is High Summer here in Australia, heat and other things to do are delaying me. If you subscribe you should get a notification as soon as one or more are available. Regards.
I wonder, does adding a light lubricant to the area where the edge finder touched the work provide more consistency by reducing any effect of friction.
Hi, that's a very good question, I have absolutely no idea. I will give it a try in next visit to workshop and get back to you with an answer. Thanks for the view and your comment. Regards.
Hi again, sorry in the delay. I have just tried it using the mechanical edge finder, I put a squirt of WD 40 on the part and finder and got some interesting results. out of 8 tries I got ZERO change on 5 and the other 3 were 2/10 ths, and that was the last 3, so perhaps the WD 40 had dripped off or evaporated. I also tried way oil but I think it was too thick, the sideways kick was very hesitant. Hope this helps. Regards.
@@daveticehurst4191 Thank you for testing this. It appears that a light lubricant might help with accuracy.
you appraoching to fast and cant get an accurate reading
Sir, I Beg to disagree. I have been in Engineering over 50 Years. I notice on your channel that you have no engineering videos. Are you a so called Armchair Mechanic ? Thanks for watching. Regards.
I have had similar results. I wonder if the mill vibration while running allows things to move slightly. On my machine I get more repeatable results if the gibs are tight. If probing Y then lock X. Same goes with Q and Z.
In addition the finest resolution on mine is +/- .0002”, so any reading is subject to that tolerance. I often forget about that. On another machine I have about 10 x better resolution ( finer glass scales) and I often pick up apparent movement when I power up. Things move a little.
no need to be rude to him, I'm an engineer, but don't post videos. It was clear in your video that you made erroneous measurements several times. 10:05 , the edge finder lights up at 10 thou, ill give you 0.8. 10:37 the measurement was 6 thou. You called all of these 2 thou, because you weren't watching the DRO at the same time and went too fast, like the other user said. You didn't notice at the time but it is clear in the playback. Your real error is somewhere around 4-6 thou for the electronic.