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7x12 Taper Turning Atachment Design

atomic_hank556
 

Has anyone ever given thought to designing a small taper turning
attachment for one of the small 7 x 12 mini-lathes? I realize you'd
need to disconnect the cross slide screw but it just don't seem like
it'd be a big deal. I figure a cam follower on a bracket attached to
the disconnected cross slide picking up a slot milled into an angle
adjustable bracket mounted to the back of the bed. Opinions, ideas,
comments?


Re: Spindle Bearings

Robert Streimikes
 

haplesstechnoweenie wrote:
I have read on a few sites that say that the design of the 9x20 style lathes
have an inherant set back.... Being that you can't run them for extended
periods of time without the spindle bearings over heating and causing some
sort of damage.
Not sure about the damage part but I believe this came from JWE Who may have done somthing of a turn around on these lathes as of late.

other problems with them are:

Most of them are incapable of cutting their own spindle thread.

Lack of tumbler reverse (needed for left hand threads.)

Lack of rigidity in the area of compound mounting.

To damm heavy to move easly (approx 300lbs) but to light for heavy work (lacks low/back gears.)

But I have never had one and am only repeating what I have read various places.
Regards
Bob


Re: Cross Slide Mod

 

Here's a compound ball bearing mod:
<>
Somewhere, I thought I'd seen a cross-slide ball bearing mod; of
course, I can't find it now! (Maybe somewhere in the 7x10 links or
files?)

Roy
--- In 7x12minilathe@..., "John" <moran03@e...> wrote:
I'm getting ready to mod my cross slide along the lines shown here:



At the same time I'd like to add a ball bearing to the cross slide
shaft.

After looking at the whole project I noted that Gordon Scott's mod
moves the cross slide travel about an inch toward the operator but
doesn't seem to actually increase the travel.

The cross slide lead screw has extra threads which would allow
additional travel once the material is milled away but this would,
of
course, require a longer lead screw shaft by an inch or so on the
knob end.

My current plan is to make an extension and bolt it onto the
existing
shaft by using a much longer screw to hold the knob in place. This
extension will hold the ball bearing to lock the inner race to the
shaft and a complete new part will be fabricated to hold the
outside
race of the bearing such that the original leadscrew will be only a
few mils farther forward than at present (this so the flange on the
shaft won't bind against the end of the carriage).

Has anyone done a similar mod? I've found a description of a BB
added to the cross slide on a 9x20 but haven't found this for the
7x.

This is a more extensive (pun intended) mod to my lathe than any
attempted previously so any advice gratefully accepted.

John


Spindle Bearings

haplesstechnoweenie
 

I have read on a few sites that say that the design of the 9x20 style lathes
have an inherant set back.... Being that you can't run them for extended
periods of time without the spindle bearings over heating and causing some
sort of damage. I have been quoted a time of about an hour for maximum run
time. It didn't sound right to me but what do I know. Just thought I would
ask you guys. I am still in a toss up between the 7x14 mini-lathe from
micro mark and the HF 9x20 (maroon).


Cross Slide Mod

John
 

I'm getting ready to mod my cross slide along the lines shown here:



At the same time I'd like to add a ball bearing to the cross slide
shaft.

After looking at the whole project I noted that Gordon Scott's mod
moves the cross slide travel about an inch toward the operator but
doesn't seem to actually increase the travel.

The cross slide lead screw has extra threads which would allow
additional travel once the material is milled away but this would, of
course, require a longer lead screw shaft by an inch or so on the
knob end.

My current plan is to make an extension and bolt it onto the existing
shaft by using a much longer screw to hold the knob in place. This
extension will hold the ball bearing to lock the inner race to the
shaft and a complete new part will be fabricated to hold the outside
race of the bearing such that the original leadscrew will be only a
few mils farther forward than at present (this so the flange on the
shaft won't bind against the end of the carriage).

Has anyone done a similar mod? I've found a description of a BB
added to the cross slide on a 9x20 but haven't found this for the 7x.

This is a more extensive (pun intended) mod to my lathe than any
attempted previously so any advice gratefully accepted.

John


Homier vs. Craftsman

John Breitbach
 

Does anyone have any experience as to how a homier compares to an old Atlas made Craftsman 109.xxxxx lathe?? I see a lot fo them go through ebay with some decent tooling in many case, and for a price that would compete with a new 7x12 homier.....then there is also the 8x14 lathemaster....I am having an indecisive moment here, and need a little help....



thanks in advance,

John

WI



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Re: Homier 7x12 lathe

Ed Paradis
 

Good morning, Whether or not you'll be happy with the Homier depends
greatly on what you expect from it. All of the "Sieg" made machines,
which include Harbor Freight, Enco, Northern, Grizzly, etc, are
thought of as somewhat highly finished "kits". Most are useable out
of the box, but require some finishing to get close tolerances out
of. With all things being relatively equal, the Homier seems to be
the best deal around for $299.00, direct from Homier. I personally
have the Homier, and I'm very happy with it. It's a real 7x12 (as
opposed to the HF 7x10 which is actually only 7x8) and all of the HF
(and others) accessories will fit it. Basically there are two
options for getting the Homier, either directly from their website:
(or one of their traveling shows) or from eBay,
the person selling them on eBay seems to have some kind of drop ship
arrangement from Homier as many have seen the shipping originator as
Homier... I've had the Homier for some time now and I'm quite
pleased with it, especially after "finishing" it a little more.
Check out Frank Hoose's site: and get
loaded up on information...

Ed

--- In 7x12minilathe@..., "kgmk99" <kgmk99@y...> wrote:
Will I be happy with the Homier 7x12 mini lathe? Can I buy one
anywhere in the La. Calif area?


Re: What's LMS?

jvswan
 

Hi Des:

Little Machine Shop has a lot of neat things for the mini-lathe. I also found
their projects page that has a great diagram for making a scissors type
knurling tool. So, you should be able to get exactly what you need from LMS,
including a detailed schematic for making the knurler and its parts. BTW, the
"Projects" page link is all the way at the bottom of their pages on the left. I
didn't find it for the first dozen times I visited.

Jason

--- In 7x12minilathe@..., "Des Bromilow" <
des.bromilow@c...> wrote:
G'Day,

I keep seeing references to a company called LMS (typically in relation to
US citizens buying tooling etc)
Could someone please tell me what LMS is (preferably with a URL to their
store) so I can check some of the designs etc? (I'm looking to build my own
sissor knurling tool)

The only LMS I know is "London Missionary Society", and the railway
(L_______ Scottish Midway??)

Thanks,
Des


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Re: Digest Number 124

Mike Smith
 



Could someone please tell me what LMS is (preferably with a URL to their store)
LMS is Little Machine Shop. Their URL is: www.littlemachineshop.com


Re: Homier lathe

Mike Smith
 

I purchased a Homier mini lathe a couple of weeks ago through their web site (they sell out of their Indiana warehouse, no LA outlet). All told it was $388.83 to Corona del Mar, CA.
It arrived with both shipping bolts sheared off but no damage other than a bent chip guard. At their price, its a bargain but it does have some rough edges (literally). The motor pulley on mine is eccentric .02" TIR! Today's task is to rebush it. Otherwise, I'm pleased.
Mike

Will I be happy with the Homier 7x12 mini lathe? Can I buy one anywhere in the La. Calif area?


Re: Digest Number 124

 

Jack Sullivan,

Your email appears to have a problem. Please contact me off list at
arendasj@...

Regards,
Jeff


Topics in this digest:

1. Atlas 6" lathe/Unimat 3 for sale. Where may I try to sell them?
From: "jsullivan10512000" <jsullivan10512000@...>

________________________________________________________________________
________________________________________________________________________

Message: 1
Date: Thu, 22 May 2003 00:23:10 -0000
From: "jsullivan10512000" <jsullivan10512000@...>
Subject: Atlas 6" lathe/Unimat 3 for sale. Where may I try to sell them?

If you can suggest a way I may sell these, email me:
jsullivan10512000@.... Best, Jack




________________________________________________________________________


Re: Atlas 6" lathe/Unimat 3 for sale

John Breitbach
 

Jack,

I may have some interest...any pics /accessories/asking price/location....



John





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Re: What's LMS?

Clint D
 

LMS =

----- Original Message -----
From: Des Bromilow
To: 7x12minilathe@...
Sent: Wednesday, May 21, 2003 11:31 PM
Subject: [7x12minilathe] What's LMS?


G'Day,

I keep seeing references to a company called LMS (typically in relation to
US citizens buying tooling etc)
Could someone please tell me what LMS is (preferably with a URL to their
store) so I can check some of the designs etc? (I'm looking to build my own
sissor knurling tool)

The only LMS I know is "London Missionary Society", and the railway
(L_______ Scottish Midway??)

Thanks,
Des


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anti-virus service working around the clock, around the globe, visit
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Re: What's LMS?

Steve Thompson
 

Hi Des,

-----Original Message-----
From: Des Bromilow [mailto:des.bromilow@...]
Sent: 22 May 2003 05:32
To: 7x12minilathe@...
Subject: [7x12minilathe] What's LMS?


G'Day,

I keep seeing references to a company called LMS (typically in relation to
US citizens buying tooling etc)
Could someone please tell me what LMS is (preferably with a URL to their
store) so I can check some of the designs etc? (I'm looking to build my own
sissor knurling tool)

Little Machine Shop, only wished I lived/visited the US to take advantage
of it.

The only LMS I know is "London Missionary Society", and the railway
(L_______ Scottish Midway??)

London, Midland, Scottish. Same thing as London Missionary Society really
:-)
Thanks,
Des



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What's LMS?

Des Bromilow
 

G'Day,

I keep seeing references to a company called LMS (typically in relation to US citizens buying tooling etc)
Could someone please tell me what LMS is (preferably with a URL to their store) so I can check some of the designs etc? (I'm looking to build my own sissor knurling tool)

The only LMS I know is "London Missionary Society", and the railway (L_______ Scottish Midway??)

Thanks,
Des


________________________________________________________________________
This email has been scanned for viruses by the CITEC Email Anti-Virus service powered by MessageLabs. For more information on a proactive email anti-virus service working around the clock, around the globe, visit www.citec.com.au
________________________________________________________________________


Atlas 6" lathe/Unimat 3 for sale. Where may I try to sell them?

 

If you can suggest a way I may sell these, email me:
jsullivan10512000@.... Best, Jack


Homier 7x12 lathe

kgmk99
 

Will I be happy with the Homier 7x12 mini lathe? Can I buy one
anywhere in the La. Calif area?


Greetings and an idea for new lathe clean-up...

atomic_hank556
 

First off allow me to introduce myself. My name is Hank and I am the
proud owner of a new Homier mini-lathe. I've wanted to buy one for a
long time now and finally took the plunge! Very nice machine, nice
features, decent power for the size. I plan on turning a few brass .5
inch bore BP cannon barrels for a couple of cannon homemade scale
wood carriages I own.

Anyway let me contribute to the group with a tip I discovered. When I
bought my mini I rushed home and did¡­nothing. I was so bogged down
with other stuff I couldn't even open the box fro almost a full week!
Anyway when I finally did it was about 8 pm on a Sunday night. By 10
pm I was ready to clean off the red packing grease and disaster
struck, no mineral spirits, turpentine, or any other solvent anywhere
in my shop, the house or even the neighbor! Whoa is me!

However being a big time shooter and gun owner I thought of a
substitute that worked even better. CLP, a gun cleaner was laying
around in vast quantities in my garage. CLP stands for Cleaner,
Lubricant, Preservative and it does just that. The stuff is used
extensively by the military. I thought why not? I'll try anything at
this point to make my first chips the same evening!

The CLP took the grease and washed it right off along with a little
help from a chip brush. Plus there is the added benefit of the "P"
portion of CLP. I am stuck in a non-climate controlled garage heading
right into a very humid summer. I was dreading the surface rust I'd
have to chase such as occurred on my mill-drill. Well the CLP will
keep the rust at bay! Just brush it on, wipe off the excess and leave
a heavy film. No rust, full time cleaning and lubrication on top of
it all! What more could you ask for. I'm even going to try it as a
cutting fluid sometime in the future!

If anyone would like some sources for CLP please contact me at
iltrng@....

Thanks!
Hank


Failure of Startup Safety System

 

I was just wondering if other members had encountered a problem with
the failure of what I call the startup safety system. When I first
got the lathe, when starting up the machine, the lower amber light
came on and the machine would not start until the direction switch was
set to the middle (0) position and then turned to the forward
position. Now, I seem to have lost this function, since the amber
light no longer comes on and the machine can be started directly up.
Also, the green light seems to have a lower brightness then it
originally did. My lathe is the Micro-Mark 7X14 and is only about 6
months old. Thanks for any comments that the more experienced users
may have.

Fred Townroe


Re: What are your biggest cuts?

Ed Paradis
 

Good morning Jacko, on the occasion that I'm turning CRS, usually
the type of cutting bit I'm using and the finish that I want dictates
the depth of cut. I use mainly carbide (started with cemented, now
use inserts) and with a new sharp bit, I was able to "hog" (if you
can actually hog on a mini) typically .025 - .035 using tap-magic.
With the inserts, I can go upwards of .045 with groans and chatter.
I've gotten used to making smaller cuts and feel that this is
probably the Gods way of teaching me a little patience... To have
the swarf flying, on occasion just chuck up some aluminium with a
sharp bit and hog out .050 - .060 for a mental holiday...

Ed

--- In 7x12minilathe@..., "doggypaw" <doggypaw@y...>
wrote:
hello.
I am pretty happy with my new 7x12 mini lathe but was wondering
what size cuts others are making on cold rolled steel.
I've gotten used to making .100+ cuts on 2" CRS on the
backgeared South Bends. I still need to get to know this lathe but
it looks like I'll be lucky to do .020 on this mini lathe.

Regards,
Jacko