A lot of work indeed. The details do matter. Working well now. Worth the effort. The original design was flawed. Nice improvement with the O rings. Dave.
Hi Dave, it maybe the new nut would never need replacing given it won't get a lot of use but I get the satisfaction of knowing it's right. Way into the future it might make the difference between the machine being kept or scrapped (not everybody has the means or time to make a new nut). I'd like to think of this machine used in somebody's workshop 50 years from now. Cheers
Ah yes that will be it. Getting close to the end of this series now. Just got the saddle and table on. Next I need to look at wheel balancing. And then ...... I'll have to find something to grind on it. I've not used a surface grinder before so I'll start maybe just sharpening some tools. Cheers
Hello Pavlo! With the most sincere wishes of peace, prosperity and God's blessing to the entire family and the state! In these difficult times, I am extremely glad to see you, as always, in good health and in a highly professional dedication to your favorite work! Igor 🇺🇦
You are welcome Julia. When I get a new-to-me machine I am always grossly over optimistic how long the repairs / adjustments / refurb will take. The surface grinder is taking as much effort as the mill and the shaper did to put right. My lathe was pretty good and just needed a coat of paint. Cheers
Hello Paul. Why do I instantly hold my breath 🫢🫣 as soon as I see a parting blade being used. As always your work is well thought out, clearly explained and expertly executed. Well done. 👏👏👍😀
Well thank you Sir. I probably over-think things and worry about stuff that does not really matter much, but I like to get it right. I don't like to leave a problem for the next person to fix. Cheers
Great video Paul. All through I was poised to comment 'yeah, but how do the threads get any oil?' and then came the 2mm hole! Looking forward to seeing how this turns out 👍
Hi Matt, somebody did suggest if the shaft filled with oil then the action of moving the table back would cause the screw to act like a piston and cause the oil to be forced out of the space - but I don't know because the metered oil flow is so low from that system. Cheers
Hi Paul, Really great that your addressing these detail items. It's so easy to get excided and in a hurry when getting close to the finish line. Nice work that will pay off in the end. Cheers....
4 jaw chuck would solve the problem of set to the centre line of the hole - but you would need to hold the end mill in the tail stock or in a tool holder
For the metric people it is a tradition in woodwork, construction, textile and other to use centimeters. The metal workers work in milimeters. I suppose you already knew this, but just in case you didn't. Good idea to insall "O"rings. That would work just fine.
Hi Michael, my daughters use centimeters in dress making and things like that. My son is an engineer so he uses mm like me. I thought builders normally work to the nearest half brick...... Cheers
Looks like a good solution to the oil feed. I am sure it will add to the satisfaction you will get from using the machine. Hope the countersink leaves a clean lead in for the O rings.
Hi Clive I am certain the old nut was not getting any oil at all. What did not dribble out of the loose oil feed fitting would dribble out the ends of the boss which holds the screw. The metering fittings really restrict the oil to a dribble anyway so there is no allowance for leakage. Cheers
Hi Paul, to get a good lubrication for the leadsscrew I think that drilling a few little holes (1mm) between the acme thread is the best solution. the oil can drip out the tube direct in to the acme thread when spinning around and from there in to the nut.
So you can see into the future Huib ?? I think one hole into the thread root was enough. And sometimes I will remove the thumbwheel from the end of the saddle lead screw (the one that locks the dial) and just squirt in some oil from that end. At least to prime it after the rebuild and maybe occasionally later also. Cheers Paul
You might consider adding some petroleum jelly (or Vasoline in the USA) to the feed screw threads. If you were not aware, it is not grease. It is pure petroleum, only very thick. It does not have a lithium soap thickener. This will mix with any oil, and be an assurance that your screw get lubricated. Now, I would not recommend petroleum jelly (or grease) for any feed screws, but since your screw is enclosed, it is a special case, and can not attract swarf. Another benefit, petroleum jelly does not get hard and dry out like grease. It just turns into thinner oil. Worth thinking about if you are not sure the screw will get lube oil from the pump regularly. ----Doozer
@ Geoff, I googled Vaseline and half came us as that and half as petroleum jelly so I think both are still in common use in UK. Just this week I wrote to an American friend saying mum (mom) but I was trying to be aware. So I'm guilty too perhaps of pointing out small differences which don't need to be highlighted really. Cheers
@@HaxbyShed lts not so much small details themselves, rather it keeps the brain ticking and is an opportunity to learn something perhaps. I too remember both Vaseline ointment and Petroleum Jelly for battery terminals being used. I presume they are the same or very similar compounds. I would guess Vaseline was an American word originally. I learned about Sodder last tine.
@@user-fz9yy3ki7j without looking it up to check but I seem to recall Vaseline is a trade name for a brand of petroleum jelly. It certainly is what you ask for in a French pharmacy but they don't seem to know the correct pronunciation. 😉
Hi Paul, excellent video! If you clean the inside of the vertical bellows with acetone or cellulose thinners you could put a square patch of gaffa tape on the inside to prevent further splitting and keep the dust out. Excellent thinking on the oiling of the screw, should have had o rings from factory. Phil
Believe it or not after a thorough de-greasing use stretch fabric Elastoplast it works well, I used it on the bellows of a Cincinnati tool and cutter grinder it has been on for years
Excellent modification on the cross slide leadscrew, rather unusual design though? One last comment on the leadscrew nut Dutch pinning, possibly the drill wander automatically compensates for each material strength resulting in asymmetrical engagement. Metres and millimetres in engineering, Centimetres for anything else. Thanks for sharing
Hi Huib, next video about the grinder is fitting the saddle and table but it may be a week or too before I show that because I have a couple of other topic first. Cheers Paul
Regarding the nut oiling, the nut is supposed to get oiled just by the fact that oil has nowhere to go inside that nut holder/cylinder, other than drip out through the small hole to feed the bearing at the front and whatever dribbles out of the leadscrew hole should over time find it`s way along the threads and lubricate the nut somewhat, tho i would say that that is inadequate lubrication... You could say that some of the oil flows back and gets picked up, but that is unlikely, as the cylinder rotates and allows the oil hole at it`s end to dribble the oil into the bearing, but the nut has some ``sidewall`` thickness before the thread can be reached, which would require the oil to have a ``level`` or to pool somewhat in the cylinder... which is possible if the rear of the cylinder has the same height shoulder that forces the oil to pool between the nut and the shoulder before dribbling out in the bearing and getting picked up by the nut as it ``sloshes`` about when you move the table... But that is just assumptions and theory, i don`t recall the specific design of the inside of that cylinder... All the best! Steuss
Hi Stuess, I think you explain it very well. The inside of the cylinder (handle shaft) is stepped - there is a big hole at the end to take the nut and the rest is narrower inside. It is possible the oil would pool inside the shaft and then be forced into the nut as the table is moved towards the back (like a hydraulic pump action) but did that ever work ? The oil flow is very low. I think there is more chance now with the improvements I have made. Cheers
@@HaxbyShed Glad to see... It could work as design department developed it, but i would like to see some more flow through that screw... Those oil metering valves appeared even before as quite restrictive to me... I would see them all stepped up by at least one size/flow rate higher... Hmmm, hard to really say just by shooting outta my ass like this... Either way, the mod could not have done harm either way, and likely does good, tho, what with the low oil flow, that mod too might be somewhat minimally beneficial... For that mod to help in lubrication, the screw mid-hole should actually see some oil flow that will allow the oil to actually reach the low point of the side-hole mod and creep out along the thread root... Quite the fucky design by OEM... It could have been implemented better - having a fixed screw and moving nut is just a gateway for bother like this... Best regards! Steuss
Cm versus mm - the former division often isn't sufficiently accurate for engineering work. If working with say cloth material using cm is more practical than implying unnecessary accuracy. The cm isn't strictly an ISO unit because it breaks its 10^3 base. Metric is scientific, Imperial is ergonomic based, which is why we still use inches and thou. Using only metric can, and does lead to overspecification of accuracy in engineering and increased costs for zero gain. Try reading a metric ruler with subdivisions of a mm with the naked eye.
Hi Geoff, did not expect cm vs mm to get so many comments. I only put it in as a teaser bait. Next video will be a report on 12 months of my solar and battery operation. That will be the last on the topic I think. After 12 months it's just repeats. Cheers
@@HaxbyShed Units - stems from long term harassment on a well known social media site. Got me to analyse why we are comfortable with mixed units in the UK. We are checking with Givenergy for compatibility of solar panels, now the weather is warming. Appreciate your help in getting us started.
Hi Ron, the end of the screw that goes into the boss is so chewed up and irregular there would never have been a seal between the screw stub and the boss. Just as likely the oil would dribble out of the back of the boss rather than entering the screw. There is a metered restrictor on each oil line and thus the oil flow is quite limited - it does not flood out of the fitting, more like a dribble. So I added the o-rings to make a sure tight seal between the screw stub and the socket in the boss and then the oil really has nowhere to go but along inside the screw. Cheers
Hi Ron, I see now thanks, but it's not a dead end hole (hard to tell on the video I know). The boss is open at the back and there is a 3 or 4 mm gap between the back of the boss and the face of the column.
The third and possibly easiest way would be to use your sons new clamps and clamp the nut shaft to a tool holder on the lathe and put a drill/ slot mill in the chuck and drill by using the saddle and cross slide. Anyone who says you cant put a drill, end mill etc in a chuck doesnt have the wit to understand subtleties of drilling compared to milling. 😂 I understand that in science/engineering, centimetres are not "preferred" units just metres and millimetres. The problem with metric is what to call 0.01mm, do you go for 10 microns or as i have heard some call the unit a cent, being one one hundredth of a mm, perhaps as we use £ it should be a penny?😂😂
@@chrisstephens6673 My point is really, that individual choice is important. Everyone should choose whatever works best for them. Unfortunately a generation of teachers have taught their pupils that Imperial is totally out of date and only metric matters. I doubt if many such teachers had any practical engineering experience so dogmatism defeats pragmatism, and stops people thinking for themselves. What use is a micron in everyday life? Who paints with a one micron brush, even when a coating is only 5 thou, and 1 thou tolerance is good enough for a close fitting bolt?
@@user-fz9yy3ki7j It is fair that teachers don't confuse pupils with two standards, SI units are the ones that all but one or two countries use, so learning them is important. The "but" is in Britain that we use a mixture in real life, I am 6foot 6 tall and 15 stone and drive at mph speeds not whatever the metric equivalent is. As a distance is the same no matter what units you use, as long as everybody knows what those units you are working with all should well.
@@chrisstephens6673 From my direct experience, there certainly exists a confused generation regarding measurement systems. There is no need to teach an entire Imperial system, only an insight into how they developed and why some are still used. There are Metric evangelists out there trying to convince the world to use nothing but SI units, and there are machinists (Colchester) reporting difficulties with over specification. This tells me that education is at fault. Many traditional units are still used in mining gold as well as in everyday life.
Split in the bellows just use some clear rubber glue there, or Bostik shoe glue, and it will fix the hole, so swarf does not get into it.
Thanks Sean 👍
A lot of work indeed. The details do matter. Working well now. Worth the effort.
The original design was flawed. Nice improvement with the O rings.
Dave.
Hi Dave, it maybe the new nut would never need replacing given it won't get a lot of use but I get the satisfaction of knowing it's right. Way into the future it might make the difference between the machine being kept or scrapped (not everybody has the means or time to make a new nut). I'd like to think of this machine used in somebody's workshop 50 years from now. Cheers
Realy enjoying following along this restauration, good job!
Regarding the belts on the lathe, the vibrations are caused by uneven width of the belts.
Ah yes that will be it. Getting close to the end of this series now. Just got the saddle and table on. Next I need to look at wheel balancing. And then ...... I'll have to find something to grind on it. I've not used a surface grinder before so I'll start maybe just sharpening some tools. Cheers
@@HaxbyShed They are lovely machines, used them a lot as a job as a toolmaker in an earlier carrer. For precision work, cooling is a must
Hello Pavlo! With the most sincere wishes of peace, prosperity and God's blessing to the entire family and the state! In these difficult times, I am extremely glad to see you, as always, in good health and in a highly professional dedication to your favorite work! Igor 🇺🇦
Oh hello Igor. Good to hear from you. We watch the news.....
good job paul
Thank you 👍
Interesting work 👍
Thank you 👍
Some thoughtful updgrades there thanks for posting 😀
You are welcome Julia. When I get a new-to-me machine I am always grossly over optimistic how long the repairs / adjustments / refurb will take. The surface grinder is taking as much effort as the mill and the shaper did to put right. My lathe was pretty good and just needed a coat of paint. Cheers
Hello Paul. Why do I instantly hold my breath 🫢🫣 as soon as I see a parting blade being used. As always your work is well thought out, clearly explained and expertly executed. Well done. 👏👏👍😀
Hi Andrew, I have had no problems since I bought the PWT multifix integral parting holder (except the time I forgot to clamp the tailstock 🙄). Cheers
After watching many of your videos now you do seem to be thorough ..... really enjoy watching what you get up to and thanks for sharing ..
Well thank you Sir. I probably over-think things and worry about stuff that does not really matter much, but I like to get it right. I don't like to leave a problem for the next person to fix. Cheers
Great video Paul. All through I was poised to comment 'yeah, but how do the threads get any oil?' and then came the 2mm hole! Looking forward to seeing how this turns out 👍
Hi Matt, somebody did suggest if the shaft filled with oil then the action of moving the table back would cause the screw to act like a piston and cause the oil to be forced out of the space - but I don't know because the metered oil flow is so low from that system. Cheers
Almost there now Paul, glad to see that extension handle became useful! Cheers
Hi Jason, often these things are useful well beyond the intended purpose. The handle extension was spot on for that job. Cheers
Hi Paul, Really great that your addressing these detail items. It's so easy to get excided and in a hurry when getting close to the finish line. Nice work that will pay off in the end.
Cheers....
Thanks Dean. I saw you visited Harold at ARW. Good to see him on air again, even if only an exception to the 'indefinitely suspended' channel. Cheers
4 jaw chuck would solve the problem of set to the centre line of the hole - but you would need to hold the end mill in the tail stock or in a tool holder
👍Thanks.
For the metric people it is a tradition in woodwork, construction, textile and other to use centimeters. The metal workers work in milimeters. I suppose you already knew this, but just in case you didn't.
Good idea to insall "O"rings. That would work just fine.
Hi Michael, my daughters use centimeters in dress making and things like that. My son is an engineer so he uses mm like me. I thought builders normally work to the nearest half brick...... Cheers
Hello Paul,
An interesting video, I enjoy hearing other thought process at the tackle a job.
Take care.
Paul,,
Thanks Paul. The old nut was getting no oil, I can be certain of it. Cheers
Looks like a good solution to the oil feed. I am sure it will add to the satisfaction you will get from using the machine. Hope the countersink leaves a clean lead in for the O rings.
Hi Clive I am certain the old nut was not getting any oil at all. What did not dribble out of the loose oil feed fitting would dribble out the ends of the boss which holds the screw. The metering fittings really restrict the oil to a dribble anyway so there is no allowance for leakage. Cheers
Hi Paul, to get a good lubrication for the leadsscrew I think that drilling a few little holes (1mm) between the acme thread is the best solution. the oil can drip out the tube direct in to the acme thread when spinning around and from there in to the nut.
So you can see into the future Huib ?? I think one hole into the thread root was enough. And sometimes I will remove the thumbwheel from the end of the saddle lead screw (the one that locks the dial) and just squirt in some oil from that end. At least to prime it after the rebuild and maybe occasionally later also. Cheers Paul
You might consider adding some petroleum jelly (or Vasoline in the USA) to the feed screw threads. If you were not aware, it is not grease. It is pure petroleum, only very thick. It does not have a lithium soap thickener. This will mix with any oil, and be an assurance that your screw get lubricated. Now, I would not recommend petroleum jelly (or grease) for any feed screws, but since your screw is enclosed, it is a special case, and can not attract swarf. Another benefit, petroleum jelly does not get hard and dry out like grease. It just turns into thinner oil. Worth thinking about if you are not sure the screw will get lube oil from the pump regularly. ----Doozer
I think the name 'Vasoline' was adopted in the UK a generation ago ?
Thanks Doozer I did not know it had those properties. I will file that away in the data bank. Cheers Paul
@ Geoff, I googled Vaseline and half came us as that and half as petroleum jelly so I think both are still in common use in UK. Just this week I wrote to an American friend saying mum (mom) but I was trying to be aware. So I'm guilty too perhaps of pointing out small differences which don't need to be highlighted really. Cheers
@@HaxbyShed lts not so much small details themselves, rather it keeps the brain ticking and is an opportunity to learn something perhaps. I too remember both Vaseline ointment and Petroleum Jelly for battery terminals being used. I presume they are the same or very similar compounds. I would guess Vaseline was an American word originally. I learned about Sodder last tine.
@@user-fz9yy3ki7j without looking it up to check but I seem to recall Vaseline is a trade name for a brand of petroleum jelly. It certainly is what you ask for in a French pharmacy but they don't seem to know the correct pronunciation. 😉
Hi Paul, excellent video! If you clean the inside of the vertical bellows with acetone or cellulose thinners you could put a square patch of gaffa tape on the inside to prevent further splitting and keep the dust out. Excellent thinking on the oiling of the screw, should have had o rings from factory.
Phil
Believe it or not after a thorough de-greasing use stretch fabric Elastoplast it works well, I used it on the bellows of a Cincinnati tool and cutter grinder it has been on for years
It'll be right Phil. Cheers
Excellent modification on the cross slide leadscrew, rather unusual design though?
One last comment on the leadscrew nut Dutch pinning, possibly the drill wander automatically compensates for each material strength resulting in asymmetrical engagement.
Metres and millimetres in engineering, Centimetres for anything else.
Thanks for sharing
Hi John, I'll never be a centimetre man. Seem totally superfluous to me. 😁
😂Paul I had to look to the end off the video.
Hi Huib, next video about the grinder is fitting the saddle and table but it may be a week or too before I show that because I have a couple of other topic first. Cheers Paul
Thx for the vid.
Always welcome 👍
Regarding the nut oiling, the nut is supposed to get oiled just by the fact that oil has nowhere to go inside that nut holder/cylinder, other than drip out through the small hole to feed the bearing at the front and whatever dribbles out of the leadscrew hole should over time find it`s way along the threads and lubricate the nut somewhat, tho i would say that that is inadequate lubrication... You could say that some of the oil flows back and gets picked up, but that is unlikely, as the cylinder rotates and allows the oil hole at it`s end to dribble the oil into the bearing, but the nut has some ``sidewall`` thickness before the thread can be reached, which would require the oil to have a ``level`` or to pool somewhat in the cylinder... which is possible if the rear of the cylinder has the same height shoulder that forces the oil to pool between the nut and the shoulder before dribbling out in the bearing and getting picked up by the nut as it ``sloshes`` about when you move the table... But that is just assumptions and theory, i don`t recall the specific design of the inside of that cylinder...
All the best!
Steuss
Hi Stuess, I think you explain it very well. The inside of the cylinder (handle shaft) is stepped - there is a big hole at the end to take the nut and the rest is narrower inside. It is possible the oil would pool inside the shaft and then be forced into the nut as the table is moved towards the back (like a hydraulic pump action) but did that ever work ? The oil flow is very low. I think there is more chance now with the improvements I have made. Cheers
@@HaxbyShed Glad to see... It could work as design department developed it, but i would like to see some more flow through that screw... Those oil metering valves appeared even before as quite restrictive to me... I would see them all stepped up by at least one size/flow rate higher... Hmmm, hard to really say just by shooting outta my ass like this...
Either way, the mod could not have done harm either way, and likely does good, tho, what with the low oil flow, that mod too might be somewhat minimally beneficial... For that mod to help in lubrication, the screw mid-hole should actually see some oil flow that will allow the oil to actually reach the low point of the side-hole mod and creep out along the thread root...
Quite the fucky design by OEM... It could have been implemented better - having a fixed screw and moving nut is just a gateway for bother like this...
Best regards!
Steuss
"troll trap" @ 12:46 🙂
😁👍
Cm versus mm - the former division often isn't sufficiently accurate for engineering work. If working with say cloth material using cm is more practical than implying unnecessary accuracy. The cm isn't strictly an ISO unit because it breaks its 10^3 base. Metric is scientific, Imperial is ergonomic based, which is why we still use inches and thou. Using only metric can, and does lead to overspecification of accuracy in engineering and increased costs for zero gain. Try reading a metric ruler with subdivisions of a mm with the naked eye.
Hi Geoff, did not expect cm vs mm to get so many comments. I only put it in as a teaser bait. Next video will be a report on 12 months of my solar and battery operation. That will be the last on the topic I think. After 12 months it's just repeats. Cheers
@@HaxbyShed Units - stems from long term harassment on a well known social media site. Got me to analyse why we are comfortable with mixed units in the UK. We are checking with Givenergy for compatibility of solar panels, now the weather is warming. Appreciate your help in getting us started.
I still don't know why do you think you need 2 "O" rings, the oil can't go someplace in a dead-end hole. or I am missing something.
Hi Ron, the end of the screw that goes into the boss is so chewed up and irregular there would never have been a seal between the screw stub and the boss. Just as likely the oil would dribble out of the back of the boss rather than entering the screw. There is a metered restrictor on each oil line and thus the oil flow is quite limited - it does not flood out of the fitting, more like a dribble. So I added the o-rings to make a sure tight seal between the screw stub and the socket in the boss and then the oil really has nowhere to go but along inside the screw. Cheers
@@HaxbyShed Sir Paul, what l was talking about is that you don't need 2 orings, 1 is all you need because it is a dead end bore.
Hi Ron, I see now thanks, but it's not a dead end hole (hard to tell on the video I know). The boss is open at the back and there is a 3 or 4 mm gap between the back of the boss and the face of the column.
@@HaxbyShed aha, l was missing something, thanks, good day.
Goop will repair your bellows
Thank you 👍
The third and possibly easiest way would be to use your sons new clamps and clamp the nut shaft to a tool holder on the lathe and put a drill/ slot mill in the chuck and drill by using the saddle and cross slide. Anyone who says you cant put a drill, end mill etc in a chuck doesnt have the wit to understand subtleties of drilling compared to milling. 😂
I understand that in science/engineering, centimetres are not "preferred" units just metres and millimetres. The problem with metric is what to call 0.01mm, do you go for 10 microns or as i have heard some call the unit a cent, being one one hundredth of a mm, perhaps as we use £ it should be a penny?😂😂
4/10 of a thou is what I would call it
@@user-fz9yy3ki7j I get where you are coming from, I still think in terms of thousands, but work in metric as most of what little I do is repair work
@@chrisstephens6673 My point is really, that individual choice is important. Everyone should choose whatever works best for them. Unfortunately a generation of teachers have taught their pupils that Imperial is totally out of date and only metric matters. I doubt if many such teachers had any practical engineering experience so dogmatism defeats pragmatism, and stops people thinking for themselves. What use is a micron in everyday life? Who paints with a one micron brush, even when a coating is only 5 thou, and 1 thou tolerance is good enough for a close fitting bolt?
@@user-fz9yy3ki7j It is fair that teachers don't confuse pupils with two standards, SI units are the ones that all but one or two countries use, so learning them is important. The "but" is in Britain that we use a mixture in real life, I am 6foot 6 tall and 15 stone and drive at mph speeds not whatever the metric equivalent is. As a distance is the same no matter what units you use, as long as everybody knows what those units you are working with all should well.
@@chrisstephens6673 From my direct experience, there certainly exists a confused generation regarding measurement systems. There is no need to teach an entire Imperial system, only an insight into how they developed and why some are still used. There are Metric evangelists out there trying to convince the world to use nothing but SI units, and there are machinists (Colchester) reporting difficulties with over specification. This tells me that education is at fault. Many traditional units are still used in mining gold as well as in everyday life.