If your suggest sandpaper, that means this doesn't need to be a precision surface, so I would try a very coarse file first Unlike sandpaper that will not shed abrasives all over the lathe.
Mike Taglieri?
On Tue, Feb 20, 2024, 9:53 PM Johannes < johannes@...> wrote: Maybe I shall cover everything and start with sanding paper? I am only interesting in a nice surface. The key slot shall stay there. Start testing to morrow! Johannes ? Lavoll. ? ? ? ? ? ? ?
?I don't know what you have for tooling. I would try HSS first. The interrupted cut will probably chip carbide.?
Brian?
-------- Original message -------- Date: 2/20/24 9:18 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
?If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0Attachments:
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Use a very sharp tip carbide about 60¡ã and a rake of 3¡ã to 5¡ã.?
Typically I would say C5 but for the project use C6 or C2 they very hard compared to C5.??
Note you may need to sharpen the tool bit a lot.?
Dave?
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Johannes 6:01pm? ?
Am I crazy?
Too big for my 7x16?
I need just to cut/grind/polish the outer surface so it looks nice.
I think it has been a 2¡± axel , see the key slot. Weight 3.5 kg.
High carbon steel ??
I cut it with an angle grinder: the sparks had a star in the end
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??? Scotch pad
animal
On 2/20/24 6:59 PM, Bill Williams
wrote:
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On Tue, Feb 20, 2024 at
7:58?PM Bill Williams < bwmsbldr1@...>
wrote:
A shear cut tool will leave you with a very
fine surface finish.? ?Bil in Boulder
On Tue, Feb 20, 2024 at
7:53?PM Johannes < johannes@...>
wrote:
Maybe I shall cover everything and start
with sanding paper? I am only interesting in a nice
surface.
The key slot shall stay there.
Start testing to morrow!
Johannes ? Lavoll. ? ? ? ? ? ? ?
?I don't know what you have for
tooling. I would try HSS first. The interrupted
cut will probably chip carbide.?
Brian?
-------- Original message --------
Date: 2/20/24 9:18 PM (GMT-05:00)
Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of
the key slot , it will vibrate.?
Slow speed , yes, but what tool?
Johannes ? Lavoll. ? ? ? ? ?
? ?
?If it fits, it's not too
big. I turned some 2 or 2.5" tubing
once.
Brian?
-------- Original message
--------
Date: 2/20/24 9:01 PM (GMT-05:00)
Subject: [7x12MiniLathe] Crazy?
Am I crazy?
Too big for my 7x16?
I need? just to cut/grind/polish the
outer surface so it looks nice.
I think it has been a 2¡± axel? , see the
key slot. Weight 3.5 kg.
High carbon steel ?
I cut it with an angle grinder: the
sparks had a star in the end.
Johannes?? Lavoll.?????????????
??
Attachments:
image0.jpeg: /g/7x12MiniLathe/attachment/118862/0
Attachments:
|
On Tue, Feb 20, 2024 at 7:58?PM Bill Williams < bwmsbldr1@...> wrote: A shear cut tool will leave you with a very fine surface finish.? ?Bil in Boulder
On Tue, Feb 20, 2024 at 7:53?PM Johannes < johannes@...> wrote: Maybe I shall cover everything and start with sanding paper? I am only interesting in a nice surface. The key slot shall stay there. Start testing to morrow! Johannes ? Lavoll. ? ? ? ? ? ? ?
?I don't know what you have for tooling. I would try HSS first. The interrupted cut will probably chip carbide.?
Brian?
-------- Original message -------- Date: 2/20/24 9:18 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
?If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0Attachments:
|
A shear cut tool will leave you with a very fine surface finish.? ?Bil in Boulder
On Tue, Feb 20, 2024 at 7:53?PM Johannes < johannes@...> wrote: Maybe I shall cover everything and start with sanding paper? I am only interesting in a nice surface. The key slot shall stay there. Start testing to morrow! Johannes ? Lavoll. ? ? ? ? ? ? ?
?I don't know what you have for tooling. I would try HSS first. The interrupted cut will probably chip carbide.?
Brian?
-------- Original message -------- Date: 2/20/24 9:18 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
?If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0Attachments:
|
That's an option too.
Brian?
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Show quoted text
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:53 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Maybe I shall cover everything and start with sanding paper? I am only interesting in a nice surface. The key slot shall stay there. Start testing to morrow! Johannes ? Lavoll. ? ? ? ? ? ? ?
On 20 Feb 2024, at 20:34, Brian VanDragt <bvandragt@...> wrote:
?I don't know what you have for tooling. I would try HSS first. The interrupted cut will probably chip carbide.?
Brian?
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:18 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
On 20 Feb 2024, at 20:09, Brian VanDragt <bvandragt@...> wrote:
?If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0 Attachments:
|
Maybe I shall cover everything and start with sanding paper? I am only interesting in a nice surface. The key slot shall stay there. Start testing to morrow! Johannes ? Lavoll. ? ? ? ? ? ? ?
toggle quoted message
Show quoted text
On 20 Feb 2024, at 20:34, Brian VanDragt <bvandragt@...> wrote:
? I don't know what you have for tooling. I would try HSS first. The interrupted cut will probably chip carbide.?
Brian?
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:18 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
On 20 Feb 2024, at 20:09, Brian VanDragt <bvandragt@...> wrote:
?If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0 Attachments:
|
I don't know what you have for tooling. I would try HSS first. The interrupted cut will probably chip carbide.?
Brian?
toggle quoted message
Show quoted text
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:18 PM (GMT-05:00) Subject: Re: [7x12MiniLathe] Crazy?
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
On 20 Feb 2024, at 20:09, Brian VanDragt <bvandragt@...> wrote:
?If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0 Attachments:
|
Brian: this is solid steel, 3.5 kg, because of the key slot , it will vibrate.? Slow speed , yes, but what tool? Johannes ? Lavoll. ? ? ? ? ? ? ?
toggle quoted message
Show quoted text
On 20 Feb 2024, at 20:09, Brian VanDragt <bvandragt@...> wrote:
? If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0 Attachments:
|
If it fits, it's not too big. I turned some 2 or 2.5" tubing once.
Brian?
toggle quoted message
Show quoted text
-------- Original message -------- From: Johannes <johannes@...> Date: 2/20/24 9:01 PM (GMT-05:00) Subject: [7x12MiniLathe] Crazy?
Am I crazy? Too big for my 7x16? I need? just to cut/grind/polish the outer surface so it looks nice. I think it has been a 2¡± axel? , see the key slot. Weight 3.5 kg. High carbon steel ? I cut it with an angle grinder: the sparks had a star in the end. Johannes?? Lavoll.????????????? ?? Attachments: image0.jpeg: /g/7x12MiniLathe/attachment/118862/0
|
Am I crazy?
Too big for my 7x16?
I need just to cut/grind/polish the outer surface so it looks nice.
I think it has been a 2¡± axel , see the key slot. Weight 3.5 kg.
High carbon steel ?
I cut it with an angle grinder: the sparks had a star in the end.
Johannes Lavoll.
|
Re: $1000 Budget: Which 7 x 14 to buy?
The DRO'S are great but they will skip?
I like them using on the carriage but not the cross-slide.? If DRO'S skip on a bearing bore you would scrap the part.?
I would use a dial indicator for cross-slide to avoid skipping.?
Dave?
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Re: LittleMachines DROs and dials
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Re: LittleMachines DROs and dials
Here photo of two I use most. No errors Dave? 
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Re: LittleMachines DROs and dials
That is why I dial indicators with 1 to 2 inch [25 to 50mm] stroke.?
It also takes care of DRO skipping too.?
Dave?
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Ralph Lehotsky 11:22am? ?
DROs on dials don't take out backlash. If you are thinking about DROs, attach them to fixed surfaces in order to get true readings.
?
Ralphie
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Re: LittleMachines DROs and dials
DROs on dials don't take out backlash.? If you are thinking about DROs, attach them to fixed surfaces in order to get true readings.
?
Ralphie
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Re: LittleMachines DROs and dials
It is best to just get rid of those dial-based DROs. ?They are not as usful as the linear ones. ?The dail-based DROs don¡¯t measure backlash
I think the best solution for DRO power is wired.
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On Feb 19, 2024, at 10:40?AM, Peter Way <poogleway@...> wrote:
I have a Littlemachines lathe with really awful DROs.? ?They use V389 batteries that last about a minute.? ?I have the following questions:
1. I'm working on a 3D printed battery holder that allows a AAA battery instead.? Is anyone else interested in these?
2. As I researched this, I realized that some of you have found linear DROs that may even be better to position the carriage and cross slide.
Can you recommend the best option?? It looks like magnetic ones are good for this application, and some cheap Chinese ones are really capacitive, and not as good.??
3. Have any of you converted from DROs to old fashioned dial handles?? That would be nice in addition, since those don't require any batteries, etc.? I kick myself every time I think about buying the DRO version.
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Re: LittleMachines DROs and dials
¡°In the information society, nobody thinks. We expected to banish paper, but we actually banished thought.¡±
~~ Michael Crichton, Jurassic Park
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On 2/20/2024 5:35 AM, Tony Smith wrote: Yup, they just turn the display off which saves bugger all power. There are some versions of these callipers that DO have very good battery life (like 3-4 years) but good luck finding them.
I¡¯ve never tried a pair, but there are solar powered versions: that aren¡¯t too spendy. Those are steel, you can get the plastic ones as well (I use those near electronics). Mitutoyo make them as well if you do want to spend more, theirs are even dual power battery/solar.
Tony
From: [email protected] <[email protected]> On Behalf Of mike allen
Sent: Tuesday, 20 February 2024 7:39 AM
To: [email protected]
Subject: Re: [7x12MiniLathe] LittleMachines DROs and dials
They don't turn odd when ya hit he switch , they just go to sleep . getting a switch between the batteries & the caliper someway will way improve battery life .
animal
On 2/19/24 11:08 AM, Bruce J wrote:
On Feb 19, 2024, at 11:41 AM, Peter Way <poogleway@... <mailto:poogleway@...> > wrote:
[Edited Message Follows]
I have a Littlemachines lathe with really awful DROs. They use V389 batteries that last about a minute. I have the following questions:
Is there any way of locking them? I have dicovered that my cheap HF digital calipers last a LOT longer on batteries if I carefully tighten the lock screw down after shutting them off. But they¡¯re pretty much sitting on my desk in a pencil holder all the time or in a drawer on my bench, since I discovered that putting them back in the case turned them on constantly.
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Re: $1000 Budget: Which 7 x 14 to buy?
I am just using the dials that came with my Speedway lathe that I bought 20 years ago. I have a 1-inch travel dial indicator that can be moved along the bed and a stop for the carriage that is adjustable. You do need a way to clamp the carriage when making facing cuts. I always manually feed toward the headstock and power feed toward?the tailstock to get a better finish. The compound should be set to 29.5 degrees. John Mattis (retired mechanical engineer)
On Mon, Feb 19, 2024 at 10:55?AM Peter Way < poogleway@...> wrote: I would just be careful not to spring for DROs on the dials.? ?I'm regretting that I bought the LMS machine many years ago with awful DROs.? The chewed batteries.? ?They may be better now.? If I were to do it again, I'd save money by getting mechanical dials and then upgrading to linear DROs if needed.
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Re: making Colchester Lathes
Really enjoyed the video.
The way the world used to work.
8^(
--
Lone Tree, Colorado? ?USA
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davesmith1800
Johannes
Ralph Lehotsky
John Mattis