Doug Warner wrote:

I'm wondering if this tool post set:
http://www.littlemachineshop.com/pro...ProductID=1672
will fit my Myford ML-7 lathe?

If anyone has one of these, can they answer a few questions please?

1. What is the ID of the mounting hole?

2. What is the distance between the mounting hole's center and the
closest edge of the release lever base? (Clearance for nut and
washer)

Thanks in advance.

That Web site says it uses a 10mm mounting bolt. - GWE

The absolute best tool post for a myford is a Dorian SD20.
THey might call it MD20 now.

chuck

Doug:

I have this QC toolpost on my Sakai (Toyo) ML-210, and I think it is
likely to be too small for your Myford. You should probably go up to
the next size in the Phase II line. I don't think the "micro" version
is going to fit.

The mounting hole is 14mm diameter top and bottom, bushed (I think) to
the bolt size, on mine 8 mm. However, there is absolutely zero
clearance betweeen the edge of the hole and the tightening lever
casting -- you have to use a cap screw with head diameter no greater
than 14 mm, and the head rests just below flush with the top surface of
the toolholder body. Plus, I suspect the bushing is either shrink-fit
or mechanically fastened in the bore, as it takes the tightening load
from the capscrew. If you bored out the bushing, you would have to
counter-bore the top larger to allow for the bigger capscrew head.

Repeat, you can't use a hold-down bolt that protrudes above the top
surface, as there is no side clearance at all.

Regards,

Bob

I picked this one because of the height ZThe Myford's mounting stud
is about 2.6" tall, so the larger ones, at 2.5: high, probabl wouldn't

You can made a new stud. I made one when I put the Dorian SD-20 toolpost
on my myford. The stud is just a bolt with a large round flat head. Easy
lathe project.

(Chuck Sherwood) wrote:

You can made a new stud. I made one when I put the Dorian SD-20 toolpost
on my myford. The stud is just a bolt with a large round flat head. Easy
lathe project.

Is this the one you're talking about?
http://www.doriantool.com/2005_MTA_C..._2005_P-18.pdf

Actually, it looks like the MDN15 is a better fit for the Myford's
..64" center height, although the Myford's extended bolt and nut would
interfere with the swing of the locking lever. I'd like to keep these
parts so I can easily switch back to the original clamping arrangement
if necessary. I guess the MND20 might be the way to go, if there's
room to enlarge the mounting bolt hole, and I'd have keep another
wrench in the tray to remove the toolholders :-)

I bought the Phase II Hobby for now, and shortened it by turning
material off the base and the flange of the center sleeve (As well as
drilling it's ID a bit larger):
http://webpages.charter.net/dwarner2/toolpost.JPG

I'm not impressed with it's quality though. The height adjusting
studs were loose in the toolholders, so they turned with the thumb
nut, and the cutoff tool holder won't clamp some blades without
shimming.

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Is this the one you're talking about?
http://www.doriantool.com/2005_MTA_C..._2005_P-18.pdf

Actually, it looks like the MDN15 is a better fit for the Myford's
.64" center height, although the Myford's extended bolt and nut would
interfere with the swing of the locking lever. I'd like to keep these
parts so I can easily switch back to the original clamping arrangement
if necessary. I guess the MND20 might be the way to go, if there's
room to enlarge the mounting bolt hole, and I'd have keep another
wrench in the tray to remove the toolholders :-)

I have the MDN20 and it works well on the myford super 7.
The center height is fine for normal tool holders. I did
have to grind a little bit off the boring bar and parting
toolholders to get them low enough. I used a belt sander
followed by surface grinder to make them look pretty.
Forget machining them; They are extremely hard.

Myford uses a 7/16 post and the MDN20 has a 3/8 hole.
I replaced the myford 7/16 post with a shopbuilt 3/8.
Just press the old one out of the top slide and install
the new one. Initially I wanted the ability to switch between
toolposts too, and the 3/8 bolt prevents that but frankly once
you use the Qc toolholder you will never use the myford 4 way turret.
I believe you could enlarge the center hole on the MDN20 toolpost
with an EDM. I doubt you can drill it.