In the real world it is very rare that a part (and process) is designed accurately and completely in the first go around. As I recall, you added the third hole partway through the series which would later cause the issue with the jig hole alignment. Speaking as a long time manufacturing engineer, having to work around issues like these is very much a real world problem. The exercise in thinking about non-intuitive alternatives is very useful in saving time, money, and avoids scrapping parts and jigs. I am very much enjoying your series of videos. Thanks for all the education !
Hi Doug! What you say is very true. I worked in model making for the high speed aerodynamics wind tunnel of the National Research Council of Canada and the one constant through all those years is that the drawings we started with are not the ones we used to finish the job. Working around problems requires creativity and attacking a problem in a new manner. I am pinning your comment to the top of the list, it is very insightful. Thanks for watching and for taking the time to write, Marc.
This comment is a bit off topic, but I wanted to express my thanks to you for all you do. Three years ago I started out on this journey of discovery in my little workshop. There have been success and there have been failures on the road of self-teaching. I was reading everything I could find and attending RU-vid University. The real breakthrough came when I watched your videos on speeds, feeds and reading chips. I took a huge step forward in my knowledge. I still make mistakes, but most often I know know what I did wrong. I watch all your videos, but I have went back and watched those two several times. Thank you so much from North Dakota!
Hi Mark tank you very much for the videos Hope you are well we ,the comunity ,are missing you and waiting for the last video in this series all the best and thank you for your kindness
It is always a pleasure to see a new video from you. Thank you for your discussion about sawing on the lathe. It is so easy to have a mental lapse and spend the rest of your life living with the consequences. Again, thank you for your words of wisdom.
Marc, Another great video. You have helped me a lot over the years, I so appreciate it! If it helps, I broke a 1/4" carbide endmill while watching you... You are looking and sounding fantastic. Be well friend!
You're such a relatable person; I really enjoy the content you create. I imagine a lot of of folks can relate to a project turning into a slog, but at least on this side of the screen it's really fantastic! Thanks for pushing on. Your explanation on the saw was educational. I am not a machinist, but I do home projects. I could easily imagine myself putting a part in a drill to spin it while I tried to do something to it. Your reminder that the shape of the cut is profoundly different when the part is spinning was helpful. I also had not considered the practical implications of chip clearing and rate of material removal; both seem obvious after you explain it. Thanks Marc!
Hi Marc. I always enjoy watching your videos, thank you. A side note to using the hacksaw on the lathe. I once had a blade snap whilst cutting in the vice withe the result of me “punching” the vice. It hurt….a lot. If I was using the lathe with the chuck spinning! I really wouldn’t want to “punch” a spinning chuck. All the very best to you sir. 👍
... and don't forget to put a piece of wood under the part so you don't get distracted and clunk the hacksaw blade onto the ways. :( "Apprentice Marks" is a nice term for it...
Good morning Marc, first thank you for the education you provide the world of machinist with your expert life experiences. Just a quick question. I have been looking to replace my mix match collection of taps and dies with a uniform good quality set of SAE . It seems there are mostly metric sets out there. My need is for a full range of SAE taps and dies with minimum OD dies so I can make the least amount of die holders for my tail stock. As for taps, I have seen so much about spiral taps, I would like to step up to spirals, if you agree, for hand and power tapping in my lathe and milling operations.. The range I use mostly is #2 thru 1/2”. Can you recommend a good manufacturer of these as sets or individuals if need be. Don’t have a Hugh budget but do try to get the better quality tools, Made in USA if possible. Thank you for any advise you could provide. Appreciate every video you make. Papa Maggio, Ex shop teacher from 50 years back. Like Mr. Pete.
Hi Marc! Not so much about machining, which I love, but is the short video of you and President Kennedy his American University speech? I'm reading "JFK and the Unspeakable." Great book.
Question: How would you determine a radius of a quadrant? As you have mentioned, you can't measure the cord because it will either have a chamfer or a burr. Can this be done with a square, gauge pin and gauge block? I feel like it can be done with a rotary table, test indicator and a mill. Your thoughts.
I wonder if you could help me please .. I tried ro forge a few tools from o1 tool steel, using a charcoal forge and hammer..Each time after forging I normalise 3 times , heat, quench and temper to dark straw/ brown , but each rime , rhe tools break, and the steel shows large grain structure....its driving me crazy...why does rhe tempering not work ...??? Thanks in advance... David
Hello teacher. I am a mechanical engineering student. And now I am quite indefinite in my major. But I just now that I will continue in this major and in CNC jobs. How can I touch you and can you give me some advice. Thank you for your supports.
