Thread: Mill vice rebuild

Originally Posted by Anorak Bob

Looking a lot like I am trying to palm off sh.t. 2 15/16" x 2 3/8" x 1 3/16"

Bob
These are highly collectable Eclipse Magnetic Blocks.
Please keep them, you may get a Surface Grinder in the future & when you do you will use them.
Mine are homemade, but copied off the Eclipse Blocks, & I find them very useful.
regards
Bruce

Like Bruce says, not crap at all, a lick on the grinder and they will look like new.

I filled the other hole a day or 2 ago and have let any movement that was going to happen happen. I looked to start scraping the bottom flat tonight so i have a reference for grinding off, but in my shed re-arrange i seem to have put my brayer somewhere, probably though "thats a good place" at the time, and now i can't find it.

Now off to find Rays thread on making mag blocks, anyone got any other good links?

Cheers,
Ew

Originally Posted by Ueee

Like Bruce says, not crap at all, a lick on the grinder and they will look like new.

I filled the other hole a day or 2 ago and have let any movement that was going to happen happen. I looked to start scraping the bottom flat tonight so i have a reference for grinding off, but in my shed re-arrange i seem to have put my brayer somewhere, probably though "thats a good place" at the time, and now i can't find it.

Now off to find Rays thread on making mag blocks, anyone got any other good links?

Cheers,
Ew

There is another way to build transfer blocks.

Take a block of non magnetic metal brass, Aluminum etc and drill/ream holes through it, then fit magnetic rods through (nails are common use for this) either by interference or a little loctite.
like this.
mag block.jpg

Thanks Josh,
I read a pm thread last night that Richard linked in Rays mag transfer block thread. I had never seen a block like that before but as I found out they are pretty handy as you can put them at any angle on the mag chuck.

Getting a chunk of brass like that could be hard, I guess its another situation of need furnace before I can make them.....need x before I can make furnace etc.

Ew

Originally Posted by Ueee

Thanks Josh,
I read a pm thread last night that Richard linked in Rays mag transfer block thread. I had never seen a block like that before but as I found out they are pretty handy as you can put them at any angle on the mag chuck.

Getting a chunk of brass like that could be hard, I guess its another situation of need furnace before I can make them.....need x before I can make furnace etc.

Ew

Try aluminum, should not be too hard to get a good chunk to play with.

It is almost true about the rotation, but if the a pin short across the poles on the chuck it is dead weight, and also reduces the flux for other pins on the same poles. So if you are going to have a crack at this design, make the pin size as close to the the width of your poles and the spacing the same as the pitch of your chuck for maximum orthogonal strength. Or make a fine one where the pins are about the same size as the laminations in the chuck so you don't get shorting of the poles, when used at an angle.

-Josh

Originally Posted by Abratool

Bob
These are highly collectable Eclipse Magnetic Blocks.
Please keep them, you may get a Surface Grinder in the future & when you do you will use them.
Mine are homemade, but copied off the Eclipse Blocks, & I find them very useful.
regards
Bruce

Yes. Bob the Reneger has a nice sound to it.

Originally Posted by Brobdingnagian

There is another way to build transfer blocks.

Take a block of non magnetic metal brass, Aluminum etc and drill/ream holes through it, then fit magnetic rods through (nails are common use for this) either by interference or a little loctite.
like this.
mag block.jpg

Josh
A long time ago I made a set just like this.
They did not work, however after reading your mention of pin size & spacing, I think thats where I must have made the mistake. It became obvious that these dimensions are important.
However the brass laminated blocks copied off the "Eclipse" brand like BTs worked fine.
I have 4 of the blocks 2 sets of different sizes also a Vee Block which was handy for accurately surface grinding the Vee in hardened steel Vee Block sets. (All of the above were Foreign Orders in Apprenticeship)
Very handy equipment.
regards
Bruce

Originally Posted by Abratool

Josh
A long time ago I made a set just like this.
They did not work, however after reading your mention of pin size & spacing, I think thats where I must have made the mistake. It became obvious that these dimensions are important.
However the brass laminated blocks copied off the "Eclipse" brand like BTs worked fine.
I have 4 of the blocks 2 sets of different sizes also a Vee Block which was handy for accurately surface grinding the Vee in hardened steel Vee Block sets. (All of the above were Foreign Orders in Apprenticeship)
Very handy equipment.
regards
Bruce

Yeah it is important to get the sizing and position of the pins right.


On the subject of mag blocks, here is an advanced one that someone may like to try. I have been meaning to make one but have not got to it yet.

It is a pitch changer and twist the field 90 degrees. Bottom would be filled with something like lead/epoxy to keep the crap out.

Mag twist.jpg
Mag twist bottom.jpg

As far as I know they are not available commercially from anyone?

Originally Posted by Brobdingnagian

On the subject of mag blocks, here is an advanced one that someone may like to try. I have been meaning to make one but have not got to it yet.
It is a pitch changer and twist the field 90 degrees. Bottom would be filled with something like lead/epoxy to keep the crap out.

As far as I know they are not available commercially from anyone?

Ok, how about making the steel pole pieces and set up the pattern in a jig, ( or leave alignment tabs than can be later machined off ) Then pour molten Aluminium into the gaps?

Regards
Ray

[H][/H]Ok, so that will spin the field 90 deg around the vertical axis, but what about horizontaly along the length of the chuck? Or does that happen with standard laminated blocks anyway?

Originally Posted by Ueee

[H][/H]Ok, so that will spin the field 90 deg around the vertical axis, but what about horizontaly along the length of the chuck? Or does that happen with standard laminated blocks anyway?

huh?

How would you sharpen the drills for the holes,to make sure they are accurate before reaming.

Originally Posted by Ueee

[H][/H]Ok, so that will spin the field 90 deg around the vertical axis, but what about horizontaly along the length of the chuck? Or does that happen with standard laminated blocks anyway?

Hi Ewan, This might make it clearer? Maybe...

DSCN2309.JPG

Regards
Ray

Originally Posted by Brobdingnagian

huh?

Yeah not the best explanation there....
Say you want to grind the edge of a thin part, with the face of the wheel. It's too thin to just sit it on the chuck, you need to hold it by the face if the part, which would be vertical. So you need to bend the flux 90deg so the blocks edge will hold the part.
And no, the answer I'm looking for is not use a vice...

Ew