Norton surface grinder secrets to grind the chuck to finer than 1/40th of a human hair precision...
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- เผยแพร่เมื่อ 9 ก.ย. 2024
- Norton surface grinder secrets to grind the chuck to finer than 1/40th of a human hair... Grinding a magnetic chuck to real precision needs to take into account the smallest heat generating dimensional changes in metal. This is where a few secrets about grinding will help you get the expected results.You will need to master a few techniques and lots of feel and patience in order to get a properly usable chuck.
We'll show how important cooling provided by the addition of coolant is when dealing with dimensions that are in the neighborhood of 1/40 of the thickness of a human hair.
Chris Anderson TH-cam Channel:
/ @oldironshops
Philippe's TH-cam Channel:
/ @philsprojects
Thank you for viewing and please feel free to subscribe, comment and like what you see.
You can also contact me via my Email:
wledpierre@gmail.com
Very nice Pierre, enjoyed!
ATB, Robin
Hi Robin,
Nice of you to visit, glad you enjoyed...
ATB, Pierre
Surface grinder and mag chuck are things I wish I had - unfortunately no space and no funds. Still, nice to see the machine at work... I can dream. Wish still I had kept the small one I once had.
For sure, temp factors must be critical. Pretty darned good result :)
Hi Chris,
You never know about the future, some tool may just follow you home... ;)
The work done on a surface grinder is very different from normal machining as you get into another world as measuring, those measures are so much more susceptible to outside elements that a good "Feel" for the job is required in order to get decent results...
Cheers, Pierre
As my late father in law used to say: "finer than a frog hair split 3 ways". Very nice work.
Hi Lee,
I like to eat frogs, it's an easy to prepare meal, just a quick skinning and no hair in the bowl...
When it comes to those small measures it get to the point that even the force of the wind counts... ;)
Cheers, Pierre
Looks good. Be careful it looked like some of those passes weren't quite getting off the right side of the mag chuck when you were grinding it in. I also suggest getting the wheel all the way off the part before stepping it over
Hi,
This mag chuck is wider than the range of the grinder, so that there is on each side a part that had been milled about 0.040" ( about 1.0 mm) lower in order to allow clearance after the range is reached, maybe this is what you noticed, cause it sounded to me that Philippe was going over enough to clear... ;)
Thanks for watching and for comment, Pierre
That is a nice little grinder machine, I'm looking for one for my workshop. Thank you Pierre for your videos always interesting, there is always something new to learn. Marco
Hi Marco,
If you seen the way it works under the carriage you may like to get something in that category, it's an easy to restore model when the bands are worn.
Thanks for comment, Pierre
Suweeeeet! I need to rool down to your garage sometime soon!
Hi Murray,
Long time no see... !!!
There isn't gonna be a meeting today, due to bad weather, but let us know when it's possible for you, mainly on Tuesdays...
Hope you're doing fine at trade school....!!!
Cheers, Pierre
Thanks for the videos AND channel tips! Subscribed them both!
Hi Pedro,
Thanks for the subscription, glad you enjoy and comment,
Pierre
Just to pass along a tip in case others had the same problem that I had trying to find Chris Anderson's channel. I clicked on your link to it and got the message that "this channel does not exist " so I searched by just his name and got someone else who has the same name but not machine related content. I then went back to this video and found the he had made a comment and clicked on that to finally get his channel. Hope that helps out anyone else who can't find it.
Hi Dale,
It's possible that the problem is localized, cause when I click on the link it works fine for me.... So far no other viewers reported the problem, maybe if you try again and if possible give me feedback on a new trial...
Thanks for taking time to share your experience in a comment, Pierre
great video and thanks for the plug. viewers are coming over in droves lol . happy machining
Hi Chris,
Great, now set the table and feed them a god meal..... lol
Good luck and keep on the video production...
Cheers, Pierre
Indeed I've got one ready to go in the morning
Enjoyed and as you mentioned the metal expands with the heat that is generated from the grinding wheel can change the surface dramatically
Hi Chuck,
This is where cooling the part is kinda of essential, without it the process could take forever.
Also going into that type of precision demands that you "Feel" the machine and the operations... ;)
Cheers, Pierre
I see you guys are keeping your noses to the old grind stone. They say that is the path to success.
Hi Harold,
A little more than half a day in the grinding mode will bring success without needing to get lots of Chinese fortune cookies... ;)
Cheers, Pierre
Good morning Pierre. This is something that I need to do to my surface grinder. To be honest, I hardly ever use my surface grinder. I've probably spent more time dressing the Chuck and the wheels more than the actual grinding of parts...lol. I use it more to make my own custom tooling than I do for parts that go out to customers.
I would like to see how you dial in the fence on the back of the Chuck. I haven't done it yet on mine. I could see if you need to grind an accurate bevel on a part by dressing the wheel on a bevel, that if the fence is not parrallel to the wheel the bevel would be off. An example of this would be for a v-block.
Hi Marcel,
The back fence is gonna be made in 2 parts, the top part hardened and advance over the chuck with a space underneath to allow for the parts to clear the roundness and chips in the corner, and if needed it can be ground with the side of the wheel to make it parallel to the X axis.
What eve the use could be if the tools help making better parts it's a great tool to have in the shop... ;)
Cheers, Pierre
thanks for that video.
Hi William,
Thank you for watching and for comment, Pierre
Looks like Phillipe could have used a little cooling water, too.
Looked kind of dry.
A good soaking would work.
I'm sure he would dry off quick.
Thanks,
John
Hi John,
A good cooling is easy to get around here in Winter, just crack the door open a little..... Geeeezzz, it's cold.... lol
I find he does a better job kinda warmed up... ;)
Thanks for comment, Pierre
Nice to see your back again Pierre....
Hi Ritch,
It's always a pleasure to have feedback from a viewer that is happy to have us around and supporting us producers by watching and commenting, thanks, Pierre
Looks like you need to loosen the stops to be able to grind the whole length of the chuck?
The chuck is oversized, the grinder is built for a 12 inches chuck, the installed chuck is 14 inches wide, so, out of range for the grinder even with the limiting devices removed... 😢 😉👍
This is real "big boy" toolmaking stuff!
Hi John,
This grinder is a very good tool, also it's fairly easy to refurbish...
Working in that class of precision demands so much more care about details than "normal" machining.
I envy the fact you're in the Summer season... ;)
Mostly that today we get a real shitty mixture of wind, snow and freezing rain until tomorrow.
Cheers, Pierre
Hi Pierre !
Themore I see of these grinding machines the more I want one, but NO ... I wont go there - NO, haven't got the space - NO, NO , NO !
But a nice video IF I ONE DAY should discover one is sticking to my hands ... no space or not no space = plenty of space !
Space, who needs it. A grinder followed me home one day and sits outside the front of my workshop. Bit tricky to use when it rains, but we do get some dry days in London.:>)
Geeezzz, I do envy you, It would save myself the trouble of fixing my flood coolant unit, mostly in foggy London... lol
And just like you I got a few tools left outside cause of the lack of room inside...
Hi Keld,
Every man is easy to take back his parole when it comes to a great deal on a tool... lol
I'm sure you could be bought pretty cheap with the proper incentive...
Watch how you get your hands that sticky, mostly that we don't get to see very many new videos from you lately... ;)
Cheers, Pierre
Pierre's Garage
Trust me, I'll be back ... and with a clean benchtop ;-))
Somebody has been watching too many old movies, instead of making chips, we haven't had a decent fog in London since 1958!
One little question, would it be an idea to have also ground the bottom of the chuck, can you be sure it hasn't warped over the years?
Hi Chris,
If the bottom is warped more than needing a quick stoning, there is probably something wrong with it, check it out good before undergoing the bottom grind...
Thanks for comment, Pierre
why didnt you grind the base of the vice too, before grinding the top?
If the bottom is in good shape there is no need to do it, a good stoning is excellent as long as there are no protruding dings...
This is also time consuming and useless in our case...
Thanks for comment, Pierre
Were you grinding with chuck on or off? Did you then indicate with it in the same state? I hear this can make a difference.
Hi Brian,
I caught Philippe grinding with the magnet on and off..... Horror....!!!!!
But, the good news is that all final grinds were made with the chuck in the activated ( ON ) position as well as all the readings, just like you mention this is important since it really makes a little difference... ;)
Cheers, Pierre
why didn't you spray ethanol instead of lubricant? it evaporates and takes the heat with it
If it cools too much it's not better, all we want is to keep it as close as possible to room temperature, the cool down time between bigger passes just do that easily and gradual. Also alcohol and sparks...???
fire is fun, but doesn't cool too well :)
i have a new shop friend misterpeirr he helps with the hotness thank you very much
Hi, I couldn't pass on this one, I had to say it.... lol
Thanks for comment, Pierre
hes on the bench now waiting for duty beside the lipton multi hammer containment annex stefonchip brush, this old toniomiter and the 6inch adam wrench
how hard is the chuck surface?
The chuck is in the range of cold rolled steel hardness, meaning pretty soft, this is the way it should be in order to not affect surfaces of other metals you need to grind...
i guess we now know what Keith Fenner keeps in his pepsi bottle. lol. always lots to learn at Pierres garage though. thanks guys
Hi Emma,
Can't be Keith's bottle, he drink sweet Pepsi, guess he needs more energy than me since he doesn't have Philippe to do all the hard work... lol
Nice of you to visit and comment, Pierre
Good video
Didn"t you hand three arms, must come in handy. You can drink beer, eat pretzels and swat mosquitoes all at the same time
Hi Milton,
A second pair of arms is practical in the Winter, one pair in your pockets that warms up while the other pair works and after a while you switch, always a warm pair available.... lol
Thanks for viewing and for comment, Pierre
Nice job Pierre learnt something new again, all good, just on thing about your audio you voice is way to loud its kind of off putting, I use head phones to watch cos not every one likes this kind of thing in the house (there loss) But the volume from your voice mike is clear but just drowns out everything else, keep up the good work.
Alan.
Hi Alan,
Thanks for the nice words... ;)
About the voice, I'll try to check it out, when I machine I'm using a close talking directional microphone in order to eliminate the most machine noise as possible, maybe if I hold it a little further from my face it would allow a better mix including more ambient noise to be recorded...
If you can keep up following this and give me more feedback it would be so kind of you...
Pierre
will do mate.
NASA always gave their monkeys a treat after they performed a task correctly. Throw Phil a peanut once in a while.
Hi Bob,
Don't worry I buy peanuts by the huge boxes, the monkeys are just getting fat on the payroll... lol
But don't feed you monkey during working hours or he may loose his concentration...
Cheers, Pierre
you guys are talking about alcohol and distractions as an enemy ,,, i've been in plenty of operating rooms where the surgeon is listening to music! we don't do that though, in my team.
Some jobs require lots of concentration and no day dreaming, this is why I tend to keep my shop quiet from even music...