Absolutely love the theory. Brings a lot of it back and encourages me to re-address my geometry and trigonometry from school. It keeps my old brain working! Cheers, Peter.
Thank you, much appreciated. I hope you enjoy the previous videos, the earlier ones show the dismantling of the knee mechanism and the issues I found with it. Thanks for your support.
Thank you very much Dale, I really appreciate that. I want to see the cast iron chips but I will be glad when they are gone too! I have a backlog of your films to watch.. They will make sure my evenings at work are well spent.
Great insight into turning cast iron. I remember having to turn up sand cast Burr crusher rollers for wool processing that were 12" dia and 6 feet long. Initial cut through the cast scale just used to destroy tools until you could get under the scale. Great explanation of the calculus for the PCD as well. I'd like to see your more detailed video on this in the future as well.......Some of us haven't done some of these calculations since trade school when A Flock of Seagulls top the charts!
Thanks Tony, I am glad you enjoyed the film. I'm not a big fan of cast iron for those reasons, but continuous cast iron tends to not be as bad. Those big rolls you talk about sound scary! Thanks again mate.
Getting there now Carl, you will soon have it all back together. Can't imagine what that lump of cast cost you! Material prices have gone nuts! Cheers, Jon
Hi Jon and thanks for your comments and support, I really appreciate them. You are right about material prices. I often use College Engineering Supplies because you can buy by the inch. Still got a bit to do but things are slowly moving forwards. Thank you again for your comments and for taking the time to watch my film.
Hi Carl, nice to see a job planned and executed properly by a pro engineer! All that maths is too much for me, but your approach will ensure a perfect result! You are going to need a dust mask and some goggles! A strategically positioned vacuum hose on the lathe might help, and i use a catch cloth over the bed and saddle held in place by magnets and i have seen wealthy folks use aluminium foil! Hard spots aside cast is lovely to turn but the cleanup afterwards is not! Phil
Thank you very much Phil. I really appreciate your comments and your support. Also your advice regarding the measures to mitigate mess when turning cast iron. I will be following them. I don't like machining it because of the mess. I'm going to be adopting a clean as you go approach to try to minimise the mess. I'm also very paranoid about anything like cast chips or bronze finding it's way into the sliding surfaces on the machine. I might put a big strong magnet in a plastic bag to catch swarf as well. Regarding my planning, the best laid plans often go astray!
Hi David. Thank you very much for your kind comments, I am glad you enjoyed the film. I really appreciate the support. I would be pleased to show the proof of the PCD calc.
Thanks for explaining the benefits of using continuous cast iron to manufacture this piece rather than a standard cast piece. Curious if you decided to manufacture this from that material to match the spirit of the original design, or maybe ease of machining a cast material compared with machining it from another material like steel. Also was material cost included in your choice of material? BTW I really enjoy these deep dives into your planning process. Count me as one vote for more on the P.C.D.
Hi Paul thank you very much for your interesting comments and for your interest and support. Cost was not really a big factor in my decision. I chose cast iron because of its damping properties. As you will no doubt know better than me, one of the big reasons it is used in machine tool manufacture is because the graphite in the matrix acts as a very good damper for vibrations. So I didn't want to introduce another material like steel say, which might have altered the vibration damping characteristic of the machine. Steel would have been much less messy to machine however, so I may well live to regret my high minded ideals and best intentions! Thanks again.
Hi Carl . It is obvious that you really have information to share. I liked your formula for PCD calculation particularly, it is something that I had never thought about having always used tables or charts to look it up . ( I have checked it out and put it in my knowledge book of trig ) . Having watched to the end I can see that you are enjoying the RUclips thing . I would like to presume to offer some advice if I may . ( not a criticism by any means ) . After about the tenth time of hearing the word orthogonal I nearly clicked off . I know it means Square or in the desired relationship to, however , You do tend to use words that some people may need to look up or are a bit highbrow, It reminds me of one of those School teachers who would send the students to sleep. I am not saying to dumb it down , I am saying that if you are trying to teach ( which you can ) , it may be better to use engineering terms like Square , instead of orthogonal . ( just one example ) . Again , this is constructive criticism and meant sincerely as advice . I wish you great success with your channel and I personally am enjoying it so far . Cheers Ade
Hi Ade, Thank you very much for your kind words. I am enjoying the youtube process and I am glad people are finding what I am doing useful. I totally take on board what you are saying at my use of certain words, like orthogonal for example. I heard myself saying it and I knew that I had overused it. I have always thought of it as an engineering term and I was taught using the word but I get it. Even as the word left my lips I knew I was overusing it. I have to say that I do not find it easy to speak in front of the camera. You always seem to make it look so effortless whereas very often I struggle to string a sentence together. The way you speak, very fluid and naturally is what I am aiming for. So I will make a concerted effort in future not to overuse certain words. Thank you again for your interest and your support. I sincerely mean it when I say to you and to others that it is deeply appreciated. Thank you also for your useful constructive criticism.
@@carlwilson1772 You have so much to offer , I am sure people will come for you mate, Good luck and thanks for taking my comments correctly . There will be trolls . Ignore them . don't bite or comment back . you can hide their comments if bad though . Lets do this , . PS . if you have a channel sticker , e mail me and I will give you a shout out when I get it . ( another networking tip ) Cheers Ade.
Thanks! Thank you for your interest and support, I really appreciate it. You are spot on right. On the drawing that the machine was built to in 1968, I bet it did say 3.625. One of the things I've got used to as a Harrison machine owner is their love of Jazz, improvisation and doing things to the spirit of the text seems to have been their thing.
@@MickZakrzewski You are right. I didn't mention in the film but I looked at that issue. To be honest I don't think there will be a massive effect, but I will do it again with taps as you suggest. Thanks.
The only comment I will make here is that not all bolt heads are perfectly concentric with the axis of the screw itself and not all bolts are identical. So while the logic behind it is 100% it's IMO a waste of time using a mic rather than just vernier calipers! With things like this I would generally look to see what is the most likely imperial measurement, ie in this case 3 5/8".
You are right. See the next video, this was to show the method more than anything else! Not really easy to measure three holes on a PCD just with a vernier. So I used this method. The original measurement, in this video, would have been more than accurate for clearance holes. However, I show a more accurate method in the next film.
Hi people, this is the beginning of Part 9 of the Mill Resto, making a cast iron housing for the bronze knee lead nut.
Now that’s a welcomed notification when it pops up. Good to see you back on the mill project 👍🏼
Thank you very much my friend! I am glad you enjoyed it. Thanks so much for your support. More to come when I'm through with work.
Absolutely love the theory. Brings a lot of it back and encourages me to re-address my geometry and trigonometry from school. It keeps my old brain working!
Cheers, Peter.
Very glad you are enjoying it Peter thanks so much.
Hi Carl, nice to see your methodology and attention to detail 👍, I will have to look at your previous video.
Thanks for sharing.
Thank you, much appreciated. I hope you enjoy the previous videos, the earlier ones show the dismantling of the knee mechanism and the issues I found with it. Thanks for your support.
Very well explained. Your workshop vacuum cleaner is in for a tough time!
Best wishes, Dean.
It certainly is. I hate machining cast iron.
Very nice job
Thank you, very kind of you to say. Thanks also for your interest and comments.
Hello Carl,
An interesting introduction to recreating the housing... Thanks for sharing...
Take care.
Paul,,
Thank you very much Paul. I hope to have more to share next week.
Hi Carl, always enjoy your videos. Perfectly planned. Unlike me I rarely practice the 6 P's.
Thanks very much Rob, I do appreciate that. You know what they say about the best laid plans though! Really pleased you enjoyed it!
Good Job Carl, be looking forward to making those cast iron chips.
Thank you very much Dale, I really appreciate that. I want to see the cast iron chips but I will be glad when they are gone too! I have a backlog of your films to watch.. They will make sure my evenings at work are well spent.
Nice
Thank you Cain. Very much appreciate your continued support.
Great insight into turning cast iron. I remember having to turn up sand cast Burr crusher rollers for wool processing that were 12" dia and 6 feet long. Initial cut through the cast scale just used to destroy tools until you could get under the scale. Great explanation of the calculus for the PCD as well. I'd like to see your more detailed video on this in the future as well.......Some of us haven't done some of these calculations since trade school when A Flock of Seagulls top the charts!
Thanks Tony, I am glad you enjoyed the film. I'm not a big fan of cast iron for those reasons, but continuous cast iron tends to not be as bad. Those big rolls you talk about sound scary! Thanks again mate.
Good video Carl
I very glad you enjoyed it. Thank you so much for your support.
I love machining cast iron...I hate cleaning up afterwards!
Yes me too!
Getting there now Carl, you will soon have it all back together. Can't imagine what that lump of cast cost you! Material prices have gone nuts! Cheers, Jon
Hi Jon and thanks for your comments and support, I really appreciate them. You are right about material prices. I often use College Engineering Supplies because you can buy by the inch. Still got a bit to do but things are slowly moving forwards. Thank you again for your comments and for taking the time to watch my film.
Hi Carl, nice to see a job planned and executed properly by a pro engineer! All that maths is too much for me, but your approach will ensure a perfect result! You are going to need a dust mask and some goggles! A strategically positioned vacuum hose on the lathe might help, and i use a catch cloth over the bed and saddle held in place by magnets and i have seen wealthy folks use aluminium foil! Hard spots aside cast is lovely to turn but the cleanup afterwards is not!
Phil
Thank you very much Phil. I really appreciate your comments and your support. Also your advice regarding the measures to mitigate mess when turning cast iron. I will be following them. I don't like machining it because of the mess. I'm going to be adopting a clean as you go approach to try to minimise the mess. I'm also very paranoid about anything like cast chips or bronze finding it's way into the sliding surfaces on the machine. I might put a big strong magnet in a plastic bag to catch swarf as well. Regarding my planning, the best laid plans often go astray!
Hi Carl great content as usual. Speaking for myself I would love to see the proof of the P.C.D equation. Cheers
Hi David. Thank you very much for your kind comments, I am glad you enjoyed the film. I really appreciate the support. I would be pleased to show the proof of the PCD calc.
I second that.
Thanks for explaining the benefits of using continuous cast iron to manufacture this piece rather than a standard cast piece. Curious if you decided to manufacture this from that material to match the spirit of the original design, or maybe ease of machining a cast material compared with machining it from another material like steel. Also was material cost included in your choice of material? BTW I really enjoy these deep dives into your planning process. Count me as one vote for more on the P.C.D.
Hi Paul thank you very much for your interesting comments and for your interest and support. Cost was not really a big factor in my decision. I chose cast iron because of its damping properties. As you will no doubt know better than me, one of the big reasons it is used in machine tool manufacture is because the graphite in the matrix acts as a very good damper for vibrations. So I didn't want to introduce another material like steel say, which might have altered the vibration damping characteristic of the machine. Steel would have been much less messy to machine however, so I may well live to regret my high minded ideals and best intentions! Thanks again.
@@carlwilson1772 Thanks for that insight Carl! Looking forward to the the next episode...
Hi Carl . It is obvious that you really have information to share. I liked your formula for PCD calculation particularly, it is something that I had never thought about having always used tables or charts to look it up . ( I have checked it out and put it in my knowledge book of trig ) . Having watched to the end I can see that you are enjoying the RUclips thing . I would like to presume to offer some advice if I may . ( not a criticism by any means ) . After about the tenth time of hearing the word orthogonal I nearly clicked off . I know it means Square or in the desired relationship to, however , You do tend to use words that some people may need to look up or are a bit highbrow, It reminds me of one of those School teachers who would send the students to sleep. I am not saying to dumb it down , I am saying that if you are trying to teach ( which you can ) , it may be better to use engineering terms like Square , instead of orthogonal . ( just one example ) . Again , this is constructive criticism and meant sincerely as advice . I wish you great success with your channel and I personally am enjoying it so far . Cheers Ade
Hi Ade, Thank you very much for your kind words. I am enjoying the youtube process and I am glad people are finding what I am doing useful. I totally take on board what you are saying at my use of certain words, like orthogonal for example. I heard myself saying it and I knew that I had overused it. I have always thought of it as an engineering term and I was taught using the word but I get it. Even as the word left my lips I knew I was overusing it. I have to say that I do not find it easy to speak in front of the camera. You always seem to make it look so effortless whereas very often I struggle to string a sentence together. The way you speak, very fluid and naturally is what I am aiming for. So I will make a concerted effort in future not to overuse certain words. Thank you again for your interest and your support. I sincerely mean it when I say to you and to others that it is deeply appreciated. Thank you also for your useful constructive criticism.
@@carlwilson1772 You have so much to offer , I am sure people will come for you mate, Good luck and thanks for taking my comments correctly . There will be trolls . Ignore them . don't bite or comment back . you can hide their comments if bad though . Lets do this , . PS . if you have a channel sticker , e mail me and I will give you a shout out when I get it . ( another networking tip ) Cheers Ade.
@@ade63dug Thank you Ade. I don't have a channel sticker, it never even crossed my mind. Maybe I should think about producing one.
Suggest actual PCD is 3.625".
Thanks! Thank you for your interest and support, I really appreciate it. You are spot on right. On the drawing that the machine was built to in 1968, I bet it did say 3.625. One of the things I've got used to as a Harrison machine owner is their love of Jazz, improvisation and doing things to the spirit of the text seems to have been their thing.
@@carlwilson1772 Try using 2 taps instead of the 2 SHCSs. There's no guarantee of concentricity between the thread and head of the screws.
@@MickZakrzewski You are right. I didn't mention in the film but I looked at that issue. To be honest I don't think there will be a massive effect, but I will do it again with taps as you suggest. Thanks.
First comment!
Take that Cain Beeping. Have you even flippin' watched it though?! That said, it's a Part 1 of Part 2, so no one is going to watch it.
@@carlwilson1772 I have now!
The only comment I will make here is that not all bolt heads are perfectly concentric with the axis of the screw itself and not all bolts are identical. So while the logic behind it is 100% it's IMO a waste of time using a mic rather than just vernier calipers!
With things like this I would generally look to see what is the most likely imperial measurement, ie in this case 3 5/8".
You are right. See the next video, this was to show the method more than anything else! Not really easy to measure three holes on a PCD just with a vernier. So I used this method. The original measurement, in this video, would have been more than accurate for clearance holes. However, I show a more accurate method in the next film.