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Re: Mini Lathe Dividing Attachment

 

Functional artwork.
It is beautiful and must have taken many hours to make.

Virus-free.

Re: Mini Lathe Dividing Attachment

 

开云体育

Hello Dick,
?
I'm glad that you are happy with both Google Drive and your Micromark 7x16. I try to pass along the things that have worked well for me, along with the things that have not, like the milling attachment for the 7x lathes. But in the end it is all personal opinion. A bad one will always seem to slip through every now and then no matter what it is.

Michael - California, USA
Micro-Mark MicroLux 7x16
LMS 3990 Hi-Torque Mill with power feed


From: 7x12minilathe@... [mailto:7x12minilathe@...]
Sent: Saturday, August 05, 2017 5:07 PM
To: 7x12minilathe@...
Subject: RE: [7x12minilathe] Mini Lathe Dividing Attachment

?

Hi Michael,

The milling head is part of my Unimat DB200 lathe. I made an adapter for the mini lathe and it works very well within it's size limitations.
By the way, I do have to thank you for your reccomendation to use Google Drive. Also I might mention that you were instrumental in my buying the MicroMark 7 X 16 lathe. I read the case you made for the MicroMark about 5 years back and I have never had second thoughts on my purchase.

Dick
Re: Mini Lathe Dividing Attachment

 

Very nice!

Did you turn the worm screw or is it purchased/retasked?

Mark
Re: Mini Lathe Dividing Attachment

 

Hi Mario,

The milling head is adapted from my Unimat DB200 lathe.

Dick
Re: Mini Lathe Dividing Attachment

 

Hi Michael,

The milling head is part of my Unimat DB200 lathe. I made an adapter for the mini lathe and it works very well within it's size limitations.
By the way, I do have to thank you for your reccomendation to use Google Drive. Also I might mention that you were instrumental in my buying the MicroMark 7 X 16 lathe. I read the case you made for the MicroMark about 5 years back and I have never had second thoughts on my purchase.

Dick
Re: Mini Lathe Dividing Attachment

 

开云体育

Very nice work Dick.
?
From what machine did you get the cutting head mounted on your cross slide from?
?
The Google Drive link worked perfectly.
By?the?way,?you?can?add?a?photo?description?in?the?details?if?you?want.

Michael - California, USA
Micro-Mark MicroLux 7x16
LMS 3990 Hi-Torque Mill with power feed

From: 7x12minilathe@... [mailto:7x12minilathe@...]
Sent: Saturday, August 05, 2017 1:48 PM
To: 7x12minilathe@...
Subject: [7x12minilathe] Mini Lathe Dividing Attachment

?

Here are some pictures of the dividing attachment I built for my Mini lathe.

This is also my first attempt at using Google Drive. ?I think I posted a like to an entire folder of four pictures.


Dick
Re: Mini Lathe Dividing Attachment

Malcolm Parker-Lisberg
 

Dick

Very nice piece of work, but it is too easy to make counting errors, so I went digital.
<>
I used a left hand worm, so the helix angle move the drive away from the head. I also cut the worm so that the backlash can be almost reduced to zero.

Malcolm

I don't suffer from insanity I enjoy it!
Mene, mene, tekel, upharsin
The writing is on the wall.
Ha-ktovet al ha-kir

--------------------------------------------

On Sat, 8/5/17, old_toolmaker@... [7x12minilathe] <7x12minilathe@...> wrote:

Subject: [7x12minilathe] Mini Lathe Dividing Attachment
To: 7x12minilathe@...
Date: Saturday, August 5, 2017, 9:48 PM


?









Here are some pictures of the dividing
attachment I built for my Mini
lathe.This is also my first attempt at
using Google Drive. ?I think I posted a like to an entire
folder of four pictures.
Dick












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Re: Mini Lathe Dividing Attachment

 

That worked nicely. All 4 pics pop up right away.
Interesting header too, can you imagine a 7x16 mm lathe? Yes, I know, Micromark, but things just pop into my head when bored.
The little tool post mill/drill caught my eye as well. Where?s that adapted from?

On Sat, Aug 5, 2017 at 3:48 PM, old_toolmaker@... [7x12minilathe] <7x12minilathe@...> wrote:
?

Here are some pictures of the dividing attachment I built for my Mini lathe.

This is also my first attempt at using Google Drive.? I think I posted a like to an entire folder of four pictures.


Dick
Mini Lathe Dividing Attachment

 

Here are some pictures of the dividing attachment I built for my Mini lathe.

This is also my first attempt at using Google Drive. ?I think I posted a like to an entire folder of four pictures.


Dick
Re: Reversing gear problem

 

Tons of thanks!? I have no access to the lathe. Sick, bored and entertaining useless musings... but it helps.

On Sat, Aug 5, 2017 at 3:10 PM, WAM ajawam2@... [7x12minilathe] <7x12minilathe@...> wrote:
?

Better links - silly Windows:



On 8/5/2017 4:09 PM, WAM wrote:
> This is from Drew's 3D model of the HF:
>
 > you may have to right-click Save As on the dwg file
>
> Not sure how accurate it is, but from what I've seen in the 3D model,
> it's pretty damn close...
>
> On 8/5/2017 1:41 PM, mario.mohl@... [7x12minilathe] wrote:
>> Talk about gears, anyone happen to know the between centers distance
>> from spindle to aux shaft?
>
Re: Reversing gear problem

 

Better links - silly Windows:

On 8/5/2017 4:09 PM, WAM wrote:
This is from Drew's 3D model of the HF:

you may have to right-click Save As on the dwg file

Not sure how accurate it is, but from what I've seen in the 3D model, it's pretty damn close...

On 8/5/2017 1:41 PM, mario.mohl@... [7x12minilathe] wrote:
Talk about gears, anyone happen to know the between centers distance from spindle to aux shaft?
Re: Reversing gear problem

 

This is from Drew's 3D model of the HF:
;lathe-spindle.pdf
;lathe-spindle.DWG
you may have to right-click Save As on the dwg file

Not sure how accurate it is, but from what I've seen in the 3D model, it's pretty damn close...

On 8/5/2017 1:41 PM, mario.mohl@... [7x12minilathe] wrote:
Talk about gears, anyone happen to know the between centers distance from spindle to aux shaft?
Re: Reversing gear problem

[email protected]
 

On a "7x12", it's 14". ?The "12" is measured from the chuck face. ?All the Chinese minis except the "7x10" are so measured, AFIK.?
The Ten is center-to-center. ?At least, mine is.

Mert


-----Original Message-----
From: mario.mohl@... [7x12minilathe] <7x12minilathe@...>
To: 7x12minilathe <7x12minilathe@...>
Sent: Sat, Aug 5, 2017 1:41 pm
Subject: [7x12minilathe] Re: Reversing gear problem



Talk about gears, anyone happen to know the between centers distance from spindle to aux shaft?

Re: Reversing gear problem

 

Talk about gears, anyone happen to know the between centers distance from spindle to aux shaft?
Re: Reversing gear problem

Pete Mclaughlin
 

Good news.
The old dried grease was softened by spraying WD40 into the joint on both sides of the pot metal casting so i could pull out the shaft and gear. On inspection i found the previous owner had never cleaned the shipping grease out of that joint but had tried to dab some lithium grease in the general direction of the bearing but to no effect.

I failed to disassemble the parts in the 6 years i have owned this 7x10 harbor freight lathe so am guilty of neglect.
Once cleaned and reassembled with wheel bearing grease the mechanism now works smoothly so back to making chips fly.

Thanks for all your help and advise

Pete McLaughlin
Re: Reversing gear problem

 

开云体育

Not true. ?The part about throwing almost anything into the mix.


There are official published formulas for denaturing ethyl alcohol. ?Each is intended to make the stew undrinkable (and difficult to purify), yet still suitable for use in different applications.


Gene McGough ?

From: 7x12minilathe@... <7x12minilathe@...> on behalf of Jerry Durand jerry_durand_california@... [7x12minilathe] <7x12minilathe@...>
Sent: Thursday, August 3, 2017 10:48 AM
?
?

Be aware that denatured alcohol is drinking alcohol (ethanol) mixed with "something" to make it denatured (undrinkable).? For the "something" I've seen gasoline, wood alcohol, and other people have reported a wide range of things.? Essentially whatever the manufacturer has a lot of that's cheap.

. . .?
Jerry Durand, Durand Interstellar, Inc.

tel: +1 408 356-3886
@DurandInterstel
www.interstellar.com
Electronic design services, lighting controllers, PCB/PWB design and layout, custom electronic equipment.

Re: Reversing gear problem

Jerry Durand
 

开云体育

Did I mention "precaution handling"?? I said it may work differently, might just mean today's batch corrodes metal or removes a finish that yesterday's batch didn't.

As it's already flammable I doubt they'd make it more flammable.? But in precautions you might get a batch that irritates skin or your breathing when it didn't in the past.

Unlike WD-40 with it's tightly controlled formula this stuff varies around.? That's all.?

On 08/03/2017 10:54 AM, Warren LeMay notebook@... [7x12minilathe] wrote:

Yes, but it works great for drilling blind holes!!? and they burn it in cars, even in California......

We deal with many things that need precaution handling (use outdoors, don't drink it, don't swallow fish hooks) and this, cutting oil and WD-40 are all on that list.

I just refuse to build a signature file that says wear eye protection, don't wear a tie, roll your long sleeves up and don't lick electrical sockets.? It is the responsibility of the purchaser to know and understand the hazards of the tools and products he buys.? The directions are on the can.....

I would expect the warning had some immediately dangerous solution from a source that may not offer a warning, but the Danger Flammable and Danger Poison on the can (and the accompanying instructions for use) should prove adequate in this case.

Warren L



-- 
Jerry Durand, Durand Interstellar, Inc.

tel: +1 408 356-3886
@DurandInterstel

Re: Reversing gear problem

 

开云体育

Yes, but it works great for drilling blind holes!!? and they burn it in cars, even in California......

We deal with many things that need precaution handling (use outdoors, don't drink it, don't swallow fish hooks) and this, cutting oil and WD-40 are all on that list.

I just refuse to build a signature file that says wear eye protection, don't wear a tie, roll your long sleeves up and don't lick electrical sockets.? It is the responsibility of the purchaser to know and understand the hazards of the tools and products he buys.? The directions are on the can.....

I would expect the warning had some immediately dangerous solution from a source that may not offer a warning, but the Danger Flammable and Danger Poison on the can (and the accompanying instructions for use) should prove adequate in this case.

Warren L


On 8/3/2017 12:48 PM, Jerry Durand jerry_durand_california@... [7x12minilathe] wrote:

?

Be aware that denatured alcohol is drinking alcohol (ethanol) mixed with "something" to make it denatured (undrinkable).? For the "something" I've seen gasoline, wood alcohol, and other people have reported a wide range of things.? Essentially whatever the manufacturer has a lot of that's cheap.

So you might find one batch/brand works differently than another batch/brand.

On 08/03/2017 09:18 AM, Warren LeMay notebook@... [7x12minilathe] wrote:
Many shellacs and varnishes use denatured alcohol as a carrier and that will also soften them later for removal.? It's thin, cheap and available in the paint aisle at the store.


--
Jerry Durand, Durand Interstellar, Inc.

tel: +1 408 356-3886
@DurandInterstel

Virus-free.

Re: Reversing gear problem

Jerry Durand
 

开云体育

Be aware that denatured alcohol is drinking alcohol (ethanol) mixed with "something" to make it denatured (undrinkable).? For the "something" I've seen gasoline, wood alcohol, and other people have reported a wide range of things.? Essentially whatever the manufacturer has a lot of that's cheap.

So you might find one batch/brand works differently than another batch/brand.

On 08/03/2017 09:18 AM, Warren LeMay notebook@... [7x12minilathe] wrote:
Many shellacs and varnishes use denatured alcohol as a carrier and that will also soften them later for removal.? It's thin, cheap and available in the paint aisle at the store.


-- 
Jerry Durand, Durand Interstellar, Inc.

tel: +1 408 356-3886
@DurandInterstel

Re: Reversing gear problem

 

开云体育

Many shellacs and varnishes use denatured alcohol as a carrier and that will also soften them later for removal.? It's thin, cheap and available in the paint aisle at the store.

It is also, as the steamers know, flammable, but it does extinguish with water and does not go boom.? In addition to WD40, I've used it (both outdoors) and turpentine effectively to remove caked grease in the past.? Don't get impatient though, it does take a while to soak clear through.? Do not use rubbing alcohol though - high percentage of water that could make it worse (rust trumps varnish in a fist fight) and if you use alcohol, oil (or WD 40 immediately on release.? It leaves the metal totally unprotected with an affinity for moisture.

Vintage single malt is also useful.....you put the denatured on the part and the single malt in you.? It makes the waiting go so much faster? 8-)

Warren L


On 8/3/2017 11:12 AM, Pete Mclaughlin pete_mclaughlin_93555@... [7x12minilathe] wrote:

?
Just what i was thinking Warren. ?I have some WD40 on it now. If that doesn't do i will visit Napa Auto Parts and see if they have some brand of penetrating oil to put on it.

Pete McLaughlin


On Aug 3, 2017, at 8:07 AM, Warren LeMay notebook@... [7x12minilathe] <7x12minilathe@...> wrote:

?

Soak it down in a penetrating solution....if the grease varnished, a couple of days in that may well get it loose with no damage, pounding, heat issues.

Warren L


On 8/3/2017 10:25 AM, Pete Mclaughlin pete_mclaughlin_93555@... [7x12minilathe] wrote:
?
thanks John
Thats what i needed to know. ?It looks like the original grease dried in the die cast cover end of the shaft and glued the shaft and the 45 tooth gear so they could not turn. ?
I will gently pry the shaft out and see if the die cast cover is still capable of acting as a bearing or if I need to take further action to repair or replace.

Sincerely
Pete McLaughlin


On Aug 3, 2017, at 6:14 AM, John@... [7x12minilathe] <7x12minilathe@...> wrote:

?

Hi Pete,

I made the dog clutch in 2009 so don't recall the details. I do know it wasn't difficult to remove and replace that shaft without removing the die cast cover on the end of the machine.

However, it's trivial to remove the die cast cover, it's held by two socket head bolts - takes only a couple minutes to remove with gears and fwd/rev in place. Once off you can see that the cover does function as the bearing for that end of the shaft; the bracket serves as the bearing closer to the mid point of that shaft.?

If the shaft seized in either bearing then you need to get it out of the seized bearing (which could be a challenge).? Assuming you get it out without too much damage you can drill or ream the hole a little larger and make and press fit? a brass bearing.? Clean up the shaft where it seized, add a little lube, reassemble and it's probably better than new.

John


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