Wachuko's Boyar-Schultz Six-Twelve Surface Grinder

[extropic]

It's common practice to dust (grind to 100% cleanup) any new mag chuck upon installation.
How you're going to grind a 16" long chuck on a 12" travel machine is beyond me.
Grinding only 12-13" in the center would be very strange and leave you with a swayback chuck.
What is it we call the drill point arc on a misused drill press or cutter tracks in the mill table? Is it "apprentice tracks"?
I recommend you buy a 6" x 12" chuck. Sorry about that.

 

[wachuko]

It's common practice to dust (grind to 100% cleanup) any new mag chuck upon installation.
How you're going to grind a 16" long chuck on a 12" travel machine is beyond me.
Grinding only 12-13" in the center would be very strange and leave you with a swayback chuck.
What is it we call the drill point arc on a misused drill press or cutter tracks in the mill table? Is it "apprentice tracks"?
I recommend you buy a 6" x 12" chuck. Sorry about that.

I never claimed I was smart... duh!

That fact did not crossed my mind... son of a gun...

Oh well... I can always use it for holding the parts that come off the plasma cutter table... for deburing them.

So now that I need to buy a 6"x12" magnetic chuck... any recommendations?

 

[woodchucker]

I never claimed I was smart... duh! That fact did not crossed my mind... son of a gun...

View attachment 512398

Oh well... I can always use it for holding the parts that come off the plasma cutter table... for deburing them.

So now that I need to buy a 6"x12" magnetic chuck... any recommendations?

Jaime, I don't think you need a new chuck.
What you described is normal for a chuck to hold when switched off.
What you need to do is open the chuck up, clean out any gunk and rust.
Be careful, depending on how the chuck is made, some can be mags that slide back and forth, mine is one that turns, but the sliding guys can be very powerful and dangerous if you just let things fly. You need to work slowly and carefully to avoid letting them jump out. I'm betting you just need a rust cleaning. Use wood and plastic quick grip clamps to hold the mags in while ascertaining what needs to be done. Release as little as possible, so keep others clamped while working on one mag if it's a multi mag (sliding chuck).

 

[wachuko]

Jaime, I don't think you need a new chuck.
What you described is normal for a chuck to hold when switched off.
What you need to do is open the chuck up, clean out any gunk and rust.
Be careful, depending on how the chuck is made, some can be mags that slide back and forth, mine is one that turns, but the sliding guys can be very powerful and dangerous if you just let things fly. You need to work slowly and carefully to avoid letting them jump out. I'm betting you just need a rust cleaning. Use wood and plastic quick grip clamps to hold the mags in while ascertaining what needs to be done. Release as little as possible, so keep others clamped while working on one mag if it's a multi mag (sliding chuck).

Good to know. I can hold off on buying a new one then. That is great since this one it is already dialed in to the table. Meaning that when I place a dial indicator on it and run it along the chuck, there is no variation.

As mentioned earlier, I will take apart one more time and get some oil in there.

 

[woodchucker]

Good to know. I can hold off on buying a new one then. That is great since this one it is already dialed in to the table. Meaning that when I place a dial indicator on it and run it along the chuck, there is no variation.

As mentioned earlier, I will take apart one more time and get some oil in there.

You will still need to true it up. Once you take it off, open it up clean it, you should take a light cut until it is true and not sparking.
when you do, keep it wet. If the coolant is not working use a spray bottle or mister. Grinders generate a lot of heat into the part.
you want to keep everything as cool as possible, flood also eliminates dust, it just creates a paste mostly.

edit: I have to look back at the postings, I didn't know you took it apart. Were there pics?

Geez Jaime, you left it like the pics? What the hell... You need to clean that mess up.
That's gotta be cleaner than that.
Was this an oil filled, or greased chuck?
That looks awful dirty and needs a bath. My eye sight sucks right now, so I can't tell everything. Your pics don't allow me to enlarge them.

 

[extropic]

@woodchucker , please read the entire thread.
Regarding the old chuck, he has dived into it without asking for advice. He has since been advised about the potential problem related to disassembly of the magnets and other issues.
No one told him to buy a new chuck. In reply #40 he tells us that he has bought a 6"x 16". He writes "Why this size? It is exactly the same footprint as the one on there right now." This is the first time he has told us that he has a 16" chuck on a 12" machine.
What is you opinion of having a 6" x 16" magnetic chuck on a 6" x 12" surface grinder?

A guy, I used to know, had many excellent aphorisms. One was "Don't break more than I can fix".

 

[woodchucker]

\

@woodchucker , please read the entire thread.
Regarding the old chuck, he has dived into it without asking for advice. He has since been advised about the potential problem related to disassembly of the magnets and other issues.
No one told him to buy a new chuck. In reply #40 he tells us that he has bought a 6"x 16". He writes "Why this size? It is exactly the same footprint as the one on there right now." This is the first time he has told us that he has a 16" chuck on a 12" machine.
What is you opinion of having a 6" x 16" magnetic chuck on a 6" x 12" surface grinder?

A guy, I used to know, had many excellent aphorisms. One was "Don't break more than I can fix".

My opinion of the 6x16 is that he didn't need it.
Nor do I believe the old chuck is garbage. It just needs to be carefully disassembled and cleaned, then put back together. I never replace unless there is a need. I realize that's me, and those of you that have money to burn can just go buy a new bright shinny thing. But I am from the fix it, and make it what it can be. Most of the time, it's better than new. Not always. But I'll bet in many cases they are at least equal to many of the economy new.

 

[jwmelvin]

Magnetic chucks are not so difficult to take apart without issue. If you’re worried about losing magnetism then slide the magnets onto a sizable piece of magnetic material when you separate the magnet plate from the top plate.

 

[extropic]

My opinion of the 6x16 is that he didn't need it.
Nor do I believe the old chuck is garbage. It just needs to be carefully disassembled and cleaned, then put back together. I never replace unless there is a need. I realize that's me, and those of you that have money to burn can just go buy a new bright shinny thing. But I am from the fix it, and make it what it can be. Most of the time, it's better than new. Not always. But I'll bet in many cases they are at least equal to many of the economy new.

You seem to have avoided an important issue, again?

What is your opinion of having a 6" x 16" magnetic chuck on a 6" x 12" surface grinder?

 

[wachuko]

I will not use the 6”x16” on the surface grinder. I understood my mistake with doing so. I will find another use for it. It was only 179.00 .

On the old chuck, the parts that I took apart were easy to do so. I did not take apart the assembly with all the magnets. Nor did I try to remove that assembly from the top plate that is attached to it.

I am guilty of lacking some patience… I know…