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Re: chatter


MERTON B BAKER
 

MessageI've found the 14" bed on the 7x12 long enuf, & even the 10" one on
the 7x10 with the chuck off and using 3C collets is long enuf, too. I agree
about the camlock TS clamps & made 'em for my 7x lathes and for the 9x20
also, which is much more limited in the TS department than the 7xs are, and
really needed the modification. The "inch" scales on the regular 7xs are as
useful as any, I use 'em only for approximations and measure with the dial
caliper when I get close. The money I don't spend on the machine buys tools
& materials.

Mert

-----Original Message-----
From: 7x12minilathe@...
[mailto:7x12minilathe@...]On Behalf Of Michael Jablonski
Sent: Tuesday, February 12, 2013 4:43 PM
To: 7x12minilathe@...
Subject: RE: [7x12minilathe] chatter





The situation with the Micromark 7x16 is that because of its size, it is
too heavy to be shipped in one carton fully assembled. This means that in
order for UPS or like carriers to ship it, the machine needs to be
unassembled and packed into two boxes so each box is under the weight limit
for shipping.

Micromark removes the entire carriage assembly from the bed in this
process, and relies on the buyer to re-install the carriage and adjust the
carriage gibs. While they do provide instructions for this assembly and
adjustment, adjusting the gibs is often a process that many people are
unfamiliar with, and so they probably don't get adjusted properly the first
time around. I too rushed through this step with my Micromark 7x16 when I
first assembled it in a hurry to get it up and running. I even completely
jumped over the step in the instructions which was to install a plastic
piece shield to keep the wiring off of the lead screw.

The compound and cross slide gibs on my machine did not require adjustment
out of the box, but I did have to loosen the carriage gibs in order for it
to slide onto the bed.

I doubt that Micromark goes over each machine when they receive it. Mine
appeared to be in the same box that it left China in.

The only advantages of a Micromark that I can see is the longer 16 inch
bed, the brushless motor, the cam lock tailstock, and the "True Inch"
compound and cross slide screws and dials. Whether or not the quality of the
machine is actually better than any other SIEG lathe is up for debate.

Michael - USA
Micro-Mark MicroLux 7x16




-----Original Message-----
From: 7x12minilathe@...
[mailto:7x12minilathe@...] On Behalf Of MERTON B BAKER
Sent: Tuesday, February 12, 2013 4:06 AM
To: 7x12minilathe@...
Subject: RE: [7x12minilathe] chatter



Doesn't the MM catalog tell us that their lathes are carefully gone over
and meticulously adjusted before they go out the door? Haven't read their
catalog for a couple of years.

Mert

-----Original Message-----
From: 7x12minilathe@...
[mailto:7x12minilathe@...]On Behalf Of george curtis
Sent: Monday, February 11, 2013 10:29 PM
To: 7x12minilathe@...
Subject: Re: [7x12minilathe] chatter

my mm 16 was so loose it near clunked. weather cought up with me so not
finished adj with shims.

george

----------------------------------------------------------
From: Michael Jablonski
To: 7x12minilathe@...
Sent: Mon, February 11, 2013 5:31:31 PM
Subject: RE: [7x12minilathe] chatter

Those set screws with the lock nuts are factory set, which means nothing
depending on who set them at the factory.
Mine were set correctly so I never needed to adjust them.

If when you lift up on the front and rear of the carriage and it does
not move, but the carriage can still slide the entire length of the bed
freely, then the carriage is probably adjusted correctly.

What you did was not a mistake, just a little extra learning experience.

Michael - USA
Micro-Mark MicroLux 7x16

-----Original Message-----
From: 7x12minilathe@...
[mailto:7x12minilathe@...] On Behalf Of William McBride
Sent: Monday, February 11, 2013 5:13 PM
To: 7x12minilathe@...
Subject: RE: [7x12minilathe] chatter

I have already changed the set screws with the lock nuts trying to get
down to the 1 mil gap is that .001 inch? I have about .008 gap at front of
saddle maybe .005 at back. I gave up spent a few hrs working on it needed to
quit for tonight.The saddle moves very nicely seems to have no play haven't
tried a cut yet. Did I make a mistake touching the set screws its very
frustrating to adjust.
Bill

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