Sanford SG- Baby Surface Grinder (Part 1)

A little baby surface grinder followed me home. It seems like it needs some love, but I think I'll keep it. In this video, I break it down, clean it up, assess what needs to be done and start getting it fixed up.
Just about everything you could want to know about Sanford Surface Grinders can be found here: www.lathes.co.uk/sanford/
If you like what I'm doing here and find some value in it, consider supporting my work on Patreon: / jeremymakesthings
I promise I'll still mostly make stuff out of rusty junk and not just buy shiny things with your money.

[@craigtate5930]

Fabulous lil machine. That looks like a really good size for us hobby guys

[@therestorationshop]

Great little machine and good job showing the break down, evaluation and partial re-assembly. I was surprised by you starting to put it together so quickly after breaking it down. When a new machine follows me home I usually take it apart and the store the pieces in random locations around the shop. I think it adds to the challenge when years later I get around to putting it together. ;)

[@JeremyMakesThings]

For added challenge, I’d suggest storing parts from multiple machines in the same box.

[@danielabbey7726]

Hmm, sounds like I've been it correctly all along! 😁

[@brandontscheschlog]

Nice rebuild on your SG. I bought a new leadscrew and the ring and pinion for the spindle axis. Mine is so bad it slowly drops when the machine is on. I will get to it one day and then start on scraping once I get more practice. It looks like someone already started to scrap your machine and they did a nice job.

[@lacaver64]

nice little machine I seek one but here in south spain you havent this little machines here good video mister

[@Dave.Wilson]

What a lovely little machine that is. It'll be nice when you'v finished.

[@therestorationshop]

I'd love to find one of these guys, great capability in a small space.

[@miguelcastaneda7257]

They come up e bay but like once every four .five years 600..800$

[@chris30v]

Nice machine I have the bigger brother to yours the 6x12 sanford. I'm going to enjoy watching all the videos.

[@martinschroederglst]

@9:19 I love how your bench does not look better than mine :)

[@TrPrecisionMachining]

very love mini grinder

[@c4t4l4n4]

Lol, just will need to wait it out for episode 2/3/4 or whatever is next. keep it up.

[@lloydbaker7099]

Great content trying to make a homemade mad chuck and I think you helped a lot

[@danielabbey7726]

These Sanford SGs are quite pricey on eBay, since they're ideal for small hobby shops. Looking forward to the next video, and seeing some sparks!

[@JeremyMakesThings]

I didn’t pay the eBay price for it, but I think calling it the “holy grail of benchtop machine tools” is only slightly overstating it.

[@danielabbey7726]

@@JeremyMakesThings Oh yeah, I agree. As for me, bought a rusty old KO Lee A601 T&C grinder to use as a light-duty SG.

[@patrickhennigan9689]

You actually have the diamond dresser facing the wrong way. Should be facing the opposite being 5 degrees past the center line of the wheel. Refer to machinery's handbook if you have one.

[@lloydbaker7099]

Great content really would love to find a match

[@letsgoBrandon204]

Nobody ever does preventive maintenance on any of the machines where I work. They're always just fixing problems when they occur. I point out to my boss that there's a dribble of oil from the spindle of a grinder, and nothing happens. One of the grinders smells like there's something burning when it's in use, but people use it like it's just another machine.

[@bobweiram6321]

I bet there's a healthy market for a tiny surface grinder like yours.

[@bheckel1]

Where did you source the oilers. I pay way too much. I do much the same kind of work in my shop just don’t post videos. I like yours a lot. Talking hands are my favorite. Nice job on the machine noise delete. I have enough machine noise without the tv kicking in.

[@JeremyMakesThings]

I want to say either McMaster or ebay, but I may have found them somewhere else. At any rate, they’re more expensive that they seem like that should be.

[@albertcorda8185]

Great Video! I just picked up one of these... it is a 2nd Generation model like yours, but with a few minor differences... I noticed that yours has a Zirc grease fitting on the transverse wheel shaft housing. Mine does not, but it does have a Zirc fitting on the cross feed, in the same place where yours has a locking knob. Do you know if these were really intended as grease fittings, or were intended to be used as high-pressure oil fittings (like they used on the older bridgport milling machines?) I've checked what literature I could find (including the MG47 manual), but there is no mention of zirc fittings and grease that I could find. I'm not certain if I should apply grease or oil to the fitting... any suggestions would be very welcome!

[@JeremyMakesThings]

I feel good greasing the one on the transverse wheel, but I feel like the cross feed one should probably get oil.

[@wiltanschannel82]

Did you just do that thing for a laugh start. Hehe Nice machine for flat work.

[@karlgross2486]

Did you ever finish the rebuild? Do you know what oil you used in the spindle? I’m rebuilding mine and can’t find any reference to the oil used in the spindle. Thanks Karl

[@JeremyMakesThings]

I’ve got a play list with the other two parts of this series. Mine has sealed bearings, so I’m afraid I can’t help on the spindle oil.

[@karlgross2486]

@@JeremyMakesThings do you have part numbers for the bearings? Are they available? Next, can I afford them? Anyway, thanks for your help. Karl

[@JeremyMakesThings]

@karlgross2486 from www.lathes.co.uk/sanford/ “Spindle bearings varied over the years and, since many assemblies have been updated, if your machine appears to need new ones it is best to disassemble and check what's fitted. The earliest bearings were E-14 or E-15 "magneto" types, these being superseded by 202PP at machine number 1511501. Sealed-for-life bearings were installed after Machine No. 1612355.”

[@joell439]

👍😎👍 cute

[@jonmeadow2449]

This was not an SG-48. This was an SG-2, if made in 1961. I was a former owner of Sanford Manufacturing Corp.

[@JeremyMakesThings]

Ah, thank you for the correction. Are the proper model names “SG” for the first generation, “SG-2” for the second, and “SG-48” for the third? (And what happened to SG-3 through 47? 😄) Whatever it’s called, it’s a great little tiny machine.

[@jonmeadow2449]

There were never SG-3 to SG-47. SG-2 had a modification on the spindle bearings and the Crossfeed Screw nut was changed from a bronze threaded casting to a combination of a cast iron screw bracket and a brass threaded crossfeed screw nut. The motor bracket was also redesigned as the motor design was changed and a new mounting style has to be created obsoleting casting SG-10 moving to SG 10A or S 686.There was also a design change converting the vacuum tube Chuck rectifier for our electro-magnetic Chuck to a solid state rectifier. The SG-48 had a redesign of the column and positioning of the vertical feed screw and nut not sticking up above the column.SG-48 also had increased horsepower from 1/6 H.P. to 1/4 H.P. and the motor bracket on the SG-48 had been changed from cast iron to aluminum and a slightly different mounting configuration. S 686 was redesigned to S 785 to accommodate to larger frame for the 1/4 H.P. motor. The table surface added the option of the Sanford Special 4"x7" permanent magnetic Chuck designed by Eclipse on the 4" x 8" travel surface thus creating the designation of the SG-48, as an option to the 2 1/2" x 5" Permanent Magnetic Chuck or the Sanford 3"x5" Electro-Matic Chuck and rectifier. The spindle drive motor configurations also changed to TEFC and mounting changed from four screw foot mount to a hanging four screw mount. Eventually, we had to make another mounting change for self-tapping screws to mount the spindle drive motors. (B-2907) made for us by Motor Appliance Corp. Motors for the original SG were made for us by Wagner Electric Corp., with the Sanford name, Robbins & Meyers and G.E. Availability and design changes as well as the upgrade to 1/4 H.P. forced us to go with Motor Appliance Corp. all the way as the other firms mentioned could not conform to our mounting requirements of had stop producing motors to our needs.

[@jonmeadow2449]

@@JeremyMakesThings I drafted a rather lengthy reply on your inquiry as to the various SG models. There never were SG-3 - SG-47. SG 2 was created to accommodate design changes in spindle drive bearings, spindle drive motor mountings, conversion of the bronze crossfeed screw nut bracket to cast iron and a brass bushing threaded for the nut. SG-48 had a complete overhaul of the column with a sheet metal cover on a one piece unit with an upgrade in the spindle drive motor power from 1/6 h.p. to 1/4 h.p. This also required a change in the motor mount from cast iron to aluminum.The SG-48 was named because we added the option of the SG 4" x 7" Permanent Magnetic Chuck made for us by Eclipse increasing the work surface from the 3" x 5" Sanford Electromagnetic Chuck or the Brown & Sharpe, 2 1/2" x 5" Permanent Magnetic Chuck. The original SG has a vacuum tube rectifier which was obsoleted by code and converted to a solid state rectifier and motors changed through the years from. Sleeve bearing to ball bearing and from open drip proof to TEFC. With this came different brackets for mounting. Original motor vendors were: Wagner Electric who made 1/6 h.p. motors marked Sanford, Robbins & Meyers and G.E., who made 1/6 h.p. A combination of delivery supply issues and cost had us shift to Balmac, who evolved to Motor Appliance Corp. Withwhom we remained and upgraded to the 1/4 h.p. (B-2907) spindle drive motor. Mounting on this also changed. There were also changes from the original flat pulleys to vee pulleys to accommodate the increase in speed and the belts for the pulleys. The sheet metal cover on the SG-48 carried the nameplate and serial number affixed to the top of the cover. Prior to internationally sheet metal cover, the nameplate was affixed to the base casting underneath the crossfeed handwheel.

[@karlgross2486]

I’m in the process of rebuilding an SG-1 and I’m at a loss trying to find what oil is used in the spindle. If anyone knows I’d sure like some help here. Thanks Karl

[@RulgertGhostalker]

Why Doesn't Anyone Make A Small One For GRINDING VALVE SHIMS ???? ...shim and bucket valve shims..... like you're not even going to chuck up the whole lot, Because You Have To Do One Shim at a Time !!!

[@TalRohan]

Boring machine grey gets replaced with wieirdly boring machine green over here ...Vintage UK machines are always green who knows why, Maybe in former Yugoslavia they were boring orange and in Canada they were boring blue...some one does a weird landrover blue machinery.

[@13yearsaprepperr.jtilbury.51]

diamond should be on the Trailing edge not the leading edge the wheel wants to eat the dresser place in the 5 o`clock position

[@JeremyMakesThings]

The wheel is spinning clockwise, so it is on the trailing edge.