Rebuilding machines... Working on a Bridgeport and DoAll Grinder
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- เผยแพร่เมื่อ 29 พ.ค. 2024
- Three or 4 little subjects tonight... .The DoAll 14" Surface Grinder, Putting a riser on the Bridgeport restoration, New LED Shop Lights and Figuring out where the heck I can buy Surface Grinder blotter and if I even need them!
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I was scared shitless that Steve was gonna knock that wheel off onto the floor.
I know it looks bad on the video but I was well aware it was there :) Too much trouble to find that one to drop it...
Me too! Sorry Steve age knocks thing off shelves no matter what we do and the floor is where we usually hang it!
I kept thinking, I wish he’d move that wheel before it falls on the floor! To much money and effort to take that chance, at least from my experience.
When I was trained 50+ years ago production wheels came with inked lables on the stone the plotters were in a tube in the wheel crate. We were taught to mark in the wheel bore to retaine wheel identification and there was head hunting if journeyman removed a wheel with no marking. The plotter were soft paper 0.015 to 0.020 thick also if you remounted a wheel you removed old plotters to put on new ones as long as the wheel gets balanced cut out your own won't hurt a thing
Working on a new video about what I am finding with the blotters... The "Labels" on the wheel are only about .009" thick.. Seems a little thin to me.... The cardboard from a 12 pack is .019 or twice as thick.... So what I would consider a better blotter. Thanks for watching and taking the time to respond...
@@10swatkins Old school (60's), grinding wheel labels used to be much thicker and softer. I don't know where you could find an equivalent today. Maybe contact Norton, they may have better info.
Hi STEVE...to make the discs for the grinder stones you can make them with engine gasket paper that is sold in sheets and you have it in many thicknesses...I worked for a year in a grinding workshop and my boss All his life it was what he did to put the stones in the grinding machines...in fact he had some large punches already prepared for the necessary diameters and it was only taking the joint paper and giving it a couple of hammer blows on a piece of wood and in 5 seconds you already had your joints for the stone... greetings from Spain and I hope this small contribution is useful to you
michael
Thanks for the information! I tried making a few last night and was stopped in my tracks after seeing some failures of wheels on a website... There was a crease in the paper they used and it cracked the wheel along that line... Today I am using a full sheet of cardboard with no creases!
There will be a video out soon of all the things I have learned about blotters and a viewer just sent me a picture or a real DoALL wheel with a perforated blotter!
Maybe use some painters tape around the riser joint to keep alignment from slipping. Your riser can easily shift when installing the turret (ask me how I know)
At the very least, put a couple witness marks on the riser and the machine. Even something simple like a sharpie to put a couple dots on them.
Your Welcome! Glad you like it! It looks great on your wall!
Thanks again!
From my copy of Grinding Wheels & Machines, P.S. Houghton (A.M.I.Mech.E), 1963, Mounting... "d) Washers or flange facings of a soft non-metallic material, not exceeding 1/16 in. in thickness, should be placed between the wheel and the flanges. If lead or babbitt metal is used, the maximum thickness is 3/8 in."
I would suggest that if you gently rotate the flange against the supplied label any high spots will show up if the label is of an insufficient thickness and needs to be replaced by a thicker, compressible paper, such as blotting paper used for calligraphy or in flower presses.
The 1/16" I could see as thick enough to compress and take care of almost any reasonable defect in the wheel surface... Just measured the "Label" on the old and new wheel, made by the same company, it was only .009". Tried making a blotter out of a "beverage box" last night and while better it only measures .019" thickness...
I can only think that modern beverage boxes have also gotten thinner over the years, just as the cans which are now only .001" thick...
Found another website with pictures of shop made blotters and the problems found... Going to have to get a larger cereal box to try out as the 12 pack box for cans would not let me cut the size blotter I needed without having a crease in the blotter....
@@10swatkins Steve, to clarify, a blotter for a grinding wheel is not an adsorbent layer for fluid, rather a deformable layer to ensure the uneven surface of the grinding disc mates to the flanges of the hub. I have found a picture of a do-all grinding wheel with a perforated label/blotter and I have sent it to your email address.
@@tda2806, Sounds like gasket material might be a better choice, probably more uniform in thickness and compressible.
Great video Steve. Thanks for sharing.
Steve, The labels *are* considered blotters to answer your first question. At the school shop I take classes at half the grinding wheels have blotters made from manila file folders (like you would put in a hanging file). Many of them are pretty ancient, so have to assume that if they were going to explode, they would have done it by now... Last year I restored a 6x18 Hairg grinder at the shop and went through all the stones to weed out the bad ones and the ones with home made blotters were no better or worse than ones with the original labels when giving them the ring test. If you are really nervy about it put the ho-made blotters on the wheel let it run for 5 min take it off, flip the wheel in the hub. run it again for 5 min. If it doesn't go ka-boom you are probably ok.
The suggestion for gasket paper made below seems like a good one too..
Some other random things I learned along the way:
- Put the wheel on the hub off the machine then just mount the hub with the wheel already on it. That way you are not having to be rough with the spindle and can have more finesse over tightening the wheel onto the hub. The wheel needs to be in the hub tight, but mounting the hub to the arbor should be "snug."
- For grinding cast iron, I've found silicon carbide wheels work the best by far.
- Before you balance your wheel in your (very nice) balancing fixture put it on the machine and true/dress both sides up to the blotter as well as the perimeter of the wheel. New grinding wheels are amazingly bad right out of the box, even for the expensive ones. it will make balancing a whole lot easier.
Nice grinder btw!
Also, do you have the info for the folks you got the riser from? I'm about to start heading down the path you took with your Bridgeport and may need various bits!
Riser people.... I think it is Scott.... 8609646549 I am working on a video with all I have found out about the blotters. AND A viewer in Spain sent me a picture of DoAll Wheel with the blotter on it! This rabbit hole is deep :)
Great job on the Bridgeport, surface grinder, and the LED lights. I can’t believe you didn’t trash that awesome Columbia shirt…whew…
Well I did change from the new blue one into the trashed green one before going into the grinder room..... The green one got soaked with diesel fixing the tractor and the wife read me the riot act :)
Steve, if you haven't made your own blotters, why not contact the wheel manufacturers in Israel? I'm sure they would put you straight and might even send you some if you tell them the diameter you want. Or if you know anyone who runs an automotive machine shop and does crankshaft grinding I'm sure they will know how to get hold of blotters.
Got to keep up around here ;) th-cam.com/video/Uf6_7hPTUms/w-d-xo.html
Looking forward to shaking your hand at Bar-Z Bash.
Very soon!
Hey steve, it's looking great. I wish i lived in the USA. So many machines, so many parts. I have an old bridgeport that a mate is borrowing and rebuilding. Zero parts available in Australia. I have found a chinese shop that sells most of the bits needed. So far they fit well and are a good price.
Sorry to hear that......Here in the states quality replacement parts are available for every single part on the Bridgeport from H&W machinerypartsdepot.com/ Also lots of repair videos from someone who does it every day. Maybe they could ship a large enough order reasonably to you ?
Beautiful Bridgeport. Hi from Nacogdoches.
Hello there!
You could use some all thread to make long guide studs for mounting the milling head onto the riser, and take them out one at a time while putting the bolts in to replace them. Too bad Bridgeport didn't make studs in place of the bolts, or maybe they thought it would be too much fiddling around. I was looking forward to seeing how you balance the grinding wheel, have to wait till next time.
That would work also... I just find that it's really not a problem if you take your time and line everything up before you place the Turret.. I put a piece of tape on the riser showing the location of two holes and then just take my time lowering the Turret.. There is space to drop the bolts in as you lower it if you balance the ram in the Turret so that it is level before you place it... That kind of takes the place of your all thread idea.... Thanks for watching and your suggestions!
Iron workers wrench is called a “spud wrench”
Reminds me I gotta work on my knee gibs, and a bunch of other things on my '58 M head. maybe swap the head out for a J head...
Just make the dam bloggers two per wheel in an out
And just how do I convence two bloggers to volunteer to be compressed onto that hub? The wheel is 14 inches and two full grown bloggers would require a wheel about 25 feet in diameter!
I don’t trust the labels if they’re thinner than about 1/20” (0.05”).
This one at .010 is really thin and offers no protection I can see... The ones I made are now water proofed with Thompsons water seal and I think will work well..
HIGH STEVE YOU MIGHT GIVE A SHOUT OUT TO THE FOLLOWING PIONEER PRINTERS INC. LOCATED IN NORTH TONUWANDA NEW YORK USA 14120. THEY SPECIALIZE IN PROVIDING BLOTTERS FOR GRINDING WHEELS..
I will check it out
Thank God that I don't have to listen to political crap....
Would it be dumb to make blotters out of something like pig mat? Don't know what a blotter is supposed to do.
The blotters are suppose to make it safer. They are thick enough to take out the stress on the wheel if the wheel is not exactly perfect as it contacts the hub faces... Suppose to help with uneven pressure and keep the wheel from developing a crack...
I think the mat would be too thick.... The DoAll manual specifically mentions perforated blotter... Never seen one so .......
Thanks
Be careful with your videos. Kurtis from CEE had a video demonetized. Too much big shaft going into bushes content.
NEVER DID HE . 🤣🤣🤣
Around here about the only thing that I have to worry about getting me in trouble with TH-cam is Don! Besides even if they demonetize a video I can take loosing 6 dollars!
NOW COME ON STEAVE YOU CALL THAT CLEAN . YOU SHURE DO NEED BETER GLASSES AND UP THE LIGHTING BY 100 PERCENT 🤣🤣🤣🤣🤣 AND WE ALWAYS HAVE TIME FOR YOU BALLSING IT UP BROTHER
Clean is a relative term... The first time I take a cut it will be back to dirty again....