The Bucking Magnet Motor

[z.monkey]

OK, got the rotary table...
Now its a 4 axis mill...
Lets shred some metal...

[khabe]

OK, got the rotary table...
Now its a 4 axis mill...
Lets shred some metal...

To be honest  - bit closer to  4 axis mill it will be when rotary axis is horisontal 
cheers,
khabe

[z.monkey]

This is a budget mill.  I don't have the room to run the rotary table vertically.

Its a tabletop 12 speed, 1/2 horsepower drill press...
http://www.harborfreight.com/12-speed-bench-top-drill-press-44836.html

With a milling vise, the X and Y Axis reach is 7" x 8"...
http://www.harborfreight.com/5-inch-drill-press-milling-vise-94276.html

The Z axis is the table and its range is 10 inches.  So I have a small space
for working.  If I had a full mill, yes it would be better to have the rotary
table vertical, and cut the cants with an end mill.  But here I don't have
the space, so I'll cut the cants from the side with a side mill, and then
file out the corners.

You have to look at the cost difference involved.  My "Mini-Mill" cost around
$300 to build.  Compare that to a cheap mill...
http://www.harborfreight.com/two-speed-variable-bench-mill-drill-machine-44991.html

Or a little better mill...
http://www.harborfreight.com/1-1-2-half-horsepower-heavy-duty-milling-drilling-machine-33686.html

Semi-Pro Mill...
http://www.harborfreight.com/vertical-milling-machine-40939.html

Or an Industrial Mill...
http://www.harborfreight.com/variable-speed-turret-head-milling-machine-with-9-inch-x-49-inch-table-38733.html

And that last one is cheap compared to American, Japanese, and German products...

It would be great to have CNC control too, but that is also lots of bux.
Its monkey controlled...

[z.monkey]

I had a little problem with the rotary table.  I need a center point mount to make circles.  The bottom of the table has a M6 screw which secures the bottom bearing plate.  But, the threads only reach up about half way, and the remaining bore is smaller than the diameter of the screw.  So, first I found some long hardened M6 screws (grade 8 ), and then carefully looked at how the table comes together.  The iron rotating part is solid and there is a channel at the end of the shaft which holds the bearing.  There is a bearing plate which holds the other side of the bearing.  The M6 screw holds this bearing plate to the table on the bottom side.  So I figure I need to bore out the remaining hole to accommodate the long clamping screw in the center.  I only removed about 15 mils on each side of the bore, and the long M6 screw fits great.  This will clamp the aluminum pieces on to the table for making the circles.

[nievesoliveras]

If something goes wrong with your table setup, you can buy or build an adjustable circle maker.

Jesus