- Joined
- Jan 16, 2016
- Messages
- 302
THE PM-833T COMES WITH A FACTORY QUILL STOP .
UNFORTUNATELY , IT IS NOT VERY USEFUL .
IT CAN BE SET TO THE DESIRED HEIGHT BUT MOVES AS SOON AS YOU TAP IT .
IT ALSO CANNOT BE MOVED IN PRECISE INCREMENTS
WITH THE DESIRE TO HAVE A SOLID & ADJUSTABLE TO .001" STOP , I BOUGHT
AN "EDUCATED NUT" ( IT's GRADUATED ) THAT IS INTENDED FOR A BRIDGEPORT .
THESE THINGS ARE GREAT BECAUSE OF THE INSTANT UP/DOWN FEATURE
ADAPTING THIS TO THE PM MILL REQUIRES SOME NEW PARTS .
THE ORIGINAL CAST IRON BRACKET WAS REPLACED WITH PARTS CUT FROM STEEL .
I WANTED A LOWER SECTION THAT IS EASILY REMOVABLE SO IT IS MADE TO CLAMP
ON THE QUILL IN TWO PARTS LIKE A CONNECTING ROD WITH MASSIVE 1/2-20 BOLTS .
IT WAS BORED OUT TO 2" AND THEN CHUCKED ON THE LATHE
MY HORVATH ECCENTRIC CHUCK ALLOWED ME TO CHUCK ON A DIAMETER THAT
ACTUALLY EXCEEDS THE SWING OF MY LATHE BY OFFSETTING THE CENTER !
THE UPPER SECTION ALSO NEEDS TO BE SOLIDLY MOUNTED . I ONLY HAD 3/16'
CLEARANCE BETWEEN THE MOVING PLATE & THE FIXED ONE OR I WOULD LOSE
SOME QUILL TRAVEL . IT WILL BOLT TO THE UNDERSIDE OF THE HEAD THROUGH
THE ORIGINAL QUILL STOP HOLE AND THE EXTRA ONE THEY PROVIDED FOR NO REASON .
I LIKE THE USE OF CURVES SO THE FIXED SECTION WAS TURNED DOWN ON MY DRIVE PLATE .
IT ALSO IS SECURED BY TWO M5 CAP SCREWS THROUGH THE FACEPLATE HOLES .
IT IS AS SOLID AS A ROCK .
I PUT A MEGA-CHAMFER ON THE UNDERSIDE OF THE MOVING PLATE TO REDUCE MASS
AND REDUCE THE VISUAL OBSTRUCTION .
I FOUND A PRETTY CLOSE MATCH THE THE PAINT COLOR P-M USES SO IT WILL LOOK
LIKE IT BELONGS .
AS AN ADDED BONUS I CAN USE MY TEMPORARY NUT ON THE BOTTOM AND MAKE A STOP
THAT WORKS GOING UP OR DOWN .
UNFORTUNATELY , IT IS NOT VERY USEFUL .
IT CAN BE SET TO THE DESIRED HEIGHT BUT MOVES AS SOON AS YOU TAP IT .
IT ALSO CANNOT BE MOVED IN PRECISE INCREMENTS
WITH THE DESIRE TO HAVE A SOLID & ADJUSTABLE TO .001" STOP , I BOUGHT
AN "EDUCATED NUT" ( IT's GRADUATED ) THAT IS INTENDED FOR A BRIDGEPORT .
THESE THINGS ARE GREAT BECAUSE OF THE INSTANT UP/DOWN FEATURE
ADAPTING THIS TO THE PM MILL REQUIRES SOME NEW PARTS .
THE ORIGINAL CAST IRON BRACKET WAS REPLACED WITH PARTS CUT FROM STEEL .
I WANTED A LOWER SECTION THAT IS EASILY REMOVABLE SO IT IS MADE TO CLAMP
ON THE QUILL IN TWO PARTS LIKE A CONNECTING ROD WITH MASSIVE 1/2-20 BOLTS .
IT WAS BORED OUT TO 2" AND THEN CHUCKED ON THE LATHE
MY HORVATH ECCENTRIC CHUCK ALLOWED ME TO CHUCK ON A DIAMETER THAT
ACTUALLY EXCEEDS THE SWING OF MY LATHE BY OFFSETTING THE CENTER !
THE UPPER SECTION ALSO NEEDS TO BE SOLIDLY MOUNTED . I ONLY HAD 3/16'
CLEARANCE BETWEEN THE MOVING PLATE & THE FIXED ONE OR I WOULD LOSE
SOME QUILL TRAVEL . IT WILL BOLT TO THE UNDERSIDE OF THE HEAD THROUGH
THE ORIGINAL QUILL STOP HOLE AND THE EXTRA ONE THEY PROVIDED FOR NO REASON .
I LIKE THE USE OF CURVES SO THE FIXED SECTION WAS TURNED DOWN ON MY DRIVE PLATE .
IT ALSO IS SECURED BY TWO M5 CAP SCREWS THROUGH THE FACEPLATE HOLES .
IT IS AS SOLID AS A ROCK .
I PUT A MEGA-CHAMFER ON THE UNDERSIDE OF THE MOVING PLATE TO REDUCE MASS
AND REDUCE THE VISUAL OBSTRUCTION .
I FOUND A PRETTY CLOSE MATCH THE THE PAINT COLOR P-M USES SO IT WILL LOOK
LIKE IT BELONGS .
AS AN ADDED BONUS I CAN USE MY TEMPORARY NUT ON THE BOTTOM AND MAKE A STOP
THAT WORKS GOING UP OR DOWN .
