That “exit predictor” must be one of the most clever and at the same time simple tool ever. 😳 Can’t understand how it has taken until now to find this channel. 🙈 The good thing is that am in the very beginning of my binge watching and it’s a lot of exiting episodes left. 😃
Recently found your channel, and I am glad that I did. I was taught machining before there were anything like CNC, and we were taught to use the tooling balls. It has been many years since I had to do math like you are doing, but at least I am able to follow what you are doing. I must say that your skill with the machines is second to none.
Brilliant video, my favourite one so far as I slowly work through the lot of them. The setup for that slot was a rathe complicated bit of work and watching someone else do it was a real treat 🙂
What a complicated piece of work, and, at the end of much work on the cylinder. Great job. I've enjoyed this series and the amount of detail that most people never see.
I make things in my workshop, telescopes and cameras etc. but these model railways engineers are a breed apart from us mere mortals. I have known a few in my long life and I am always so impressed with their meticulous attention to detail, fit and finish. Watching this series beats watching TV any day. Thanks so much for sharing and I have subscribed to see how it all goes along.
I bumped in to Tony Simons yesterday and he was singing your praises. This video just goes to prove what a talented engineer you are.. I also found out we both went to Fulford school. Great video Crispin...looking forward to the next one.
You and your peers are some really great machinists! That cut would have scared me to death! Wrong place, milled wrong, bad finish, tons of things could go wrong LOL. Great demonstration and explanation! Will have to watch again to catch more of it!
Thanks very much for showing the use of a tooling ball. I have seen these in catalogs, but did not know exactly how they were used. Your explanation was excellent!
Thank You MrCrispin !!!...I am a late bloomer to your video's...slowly catching up...This one in particular I will be watching several times to get my head around it...Jeff
So much thought and effort for a "simple" slot - fascinating. Thank you very much for giving insight into your work. It can't be easy to do this complex work and film in parallel.
I watch several video channels with content such as yours. Most machinists would simply put a digital protractor on the piece to index it. I appreciate your method of using the sine bar. That’s a technique that could be lost over time. Also, using mathematics to locate the cutting tool, instead of a digital x,y,z table (something I’ll never be able to afford). Quite intriguing.
Just like to say thank you for all these videos. They are some of the best I have seen on machining and your explanations are so clear. I am embarking on the construction of a Sterling Single and these have helped tremendously.
Superb? Yes, I have done the whole 7 tonight and am totally inspired to do some built up ones for various projects!! We are based close to the Reading Track!!! Thank you ever so much!!!
Another great tutorial in your machining cylinder series. Certainly a lot of math and careful setup needed for this delicate operation. I hope the other 3 slots came out OK. Keep up your excellent work and interesting videos.
Thanks for the video and making a complicated step understandable (there are real-world applications for maths!). Looking forward to the next video. Thanks again. Joe
Impressive work and some interesting solutions. I have been a machinist for nearly 40 years and I am not too proud to admit I learned a trick or two along the way in this series. You have gained a subscriber. Everyone knows about Pythagoras' Theorom h²=x²+y² but not everyone knows it also works for 3D h²=x²+y²+z²
Classic! I love your round ram! True tool and die is about the math. Tooling balls and note plugs are an easy way to get accuracy. Sine bars are a cheap way to get very high angle accuracy. I am restoring 3 Wadkin machines from England. Wadkin went to rolls Royce and said he will build machines like they build cars. He did! The myford lathe is simply one of the best designs in its class. I don’t have a CNC but I have a round ram and my wood lathe is a 1943 Wadkin RU. Wouldn’t change anything. At work, it’s a different story. Love your videos and talent. How about a shop your?
Great video. When I machined the ports on my Royal Scot, I played around with angles but to nowhere near the level of detail you have here. Ultimately, I ended up working by eye and nerve wracking as it was, it worked. I do like the destination tool you showed, that would have taken a load of stress away 🤣
Yes, yes that is great and I understand. Have to take some aspirins, hit the rewind few times. So awesome. Some times in life, it's not that you know all the answers but you know where to find all the answers. Thanks very much for sharing.
the part at the end showing the slot ending toward the cylinder cover and a chamfer being removed from the cover is similar to what i found on a 1875 3'6" gauge locomotive when i was cosmetically restoring it. It had a history of being called astmatic and it had been improved at a workshop later that year the rear cylinder cover had a 4" wide 1/2"deep slot hand chiseled from the port that was covered over by the cover when it was fitted
Nice job MrCrispin. I've always had a working respect for compound angles, and have had many conversations / arguments with the engineers that define them. Angles do strange things when you start introducing the second angle. The tooling ball is a great thing to keep in your toolbox and fully understand. I have several. Nice work.
Yes, Luckily in this operation although the slot was at a compound angle the tooling ball wasn't. it was inline with the zy plane of the machine so it made the maths straight forward.
Either way seems like a tricky proposition, at least in my mind. How would you suppose they cast internal passages like that? I'm sure the cast-masters had their methods, and knew which parts to cast and what had to be machined. It's all just incredibly fascinating to me. I'm so glad MrCrispin has begun filming again, and he's even inspired me to get back to shooting things...now let's just see if I can edit things, LOL!
Outstanding. I love the way you worked through that. where do you live? I'm not used to accents like yours using inches! I'm always expecting metric. Very well done sir!
"position predictor" I've used the spindle end of that, wish I would have thought of the other half of it though, would have made a difference in a few of my guess-o-mates.
I love your build. At what presssure are you going to run this? and what power will one of these cylinder produce at that pressure? Are there anz engineering reasons for milling the cylinder rounds (like heat distribution) or is it purely esthetic? cheers
George Moore 2000 rpm is right about in the ballpark for an 1/8th “ 2 flute cutter in cast iron. I tend to stay on the conservative sides of things as well myself. But these smart fellows have speed and feed calculators installed directly into their brains. They get installed at the same time the trigonometry module and patience of a saint programs go in.
Well thanks for your swift reply I was a Manual/CNC Turner in the Aerospace industry for many years and RR for a while, would have loved to have taken on the challenge of building a Locomotive at some stage but now I potter in my shed with wood. Good luck in all you do Mr Crispin love the vids just not enough of them, you need to get out of that industry while your still young.
