A new (and slightly off) topic
?Dear Gentlemen,
1. If you feel this is too far off the topics generally covered, then may I ask you to simply delete it. I do not want to generate a lot of wasted time and effort on is/is not appropriate for this group.
2. This subject may have been answered before, so if it was then sorry, but how do I access the previous content from maybe 10 + years ago? As I can¡¯t remember it in the last 10 years or so when I think(?) I joined the group.
So in fear and trepidation ¡®May I ask¡¯ ??? I need to make some small but accurate ( but not precision,) hardwood blocks, approximately 50mm x 50mm x 20mm thick (2in. x 2in. x 1in. thick). They have rebates and angled faces etc. I have sufficient and appropriate router cutters, plus collets.
So is there any technical reason why I can¡¯t mill or rather rout them on my milling machine. It will be so much easier and much more accurate. They will probably be made of beech. (I can¡¯t see any reason not to, but I have never tried it before? )
Thank you in advance (but with fear & trepidation),?
David? Nr Oxford, UK.
toggle quoted message
Show quoted text
On 13 Feb 2025, at 22:28, Bruce J via groups.io <bruce.desertrat@...> wrote:
? That was my instant thought as well. Something like this:?
It won¡¯t work as a crank AND dividing head for your use case, but for the times you need to crank the lathe by hand (like when making a large thread or worm gear ) ?it will work better than trying to get enough torque to do it with the lathe motor.
Christophe has a bunch of really elegant tools and builds. On Feb 13, 2025, at 2:23?PM, Ellis Cory via groups.io <ellis103@...> wrote:
Hi Johannes. You don¡¯t need an extra crank. ? As your dividing disc uses the outer edge for measurement. Just drill a suitable hole in the disc, with a suitable bolt and handle, this can be attached when you need it and removed when you don¡¯t. ? ??????????????? Ellis ? ? ? I have a big dividing disk on the left side of my lathe. ?So no space for the crank. However, after some days use, I will use my new crank much more.
--?
Bruce Johnson
The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.
|
Re: Here list of charts & Tables
The first thing tested was my lathe bedways .?
?
I forgot to say the reason for small ball so test thiner materials.?
?
But out looking for materials a large ball is harder to lose. It happens a lot.?
?
So in shop a use 3/16"
Looking for materials I have a bag of ? low quality cheap balls.?
?
Dave?
|
Re: Here list of charts & Tables
Here is one on Hardness tester
I like because leave no marks on new parts.
?
Shows how built
?
?
This Closeup of the scale .
?
|
Cutting with rotating cutter
My picture disappeared someplace, so I send it again.
/johannes
Mexico
|
Re: Cutting with rotating cutter
After some hours setting?up the equipment , ready to do the new cutting with leadscrew, (Thanks to Roy,)? I did? something
XXXXXXX
Ok, so it is to be a lathe operator.
However, I tested it on something different , and I really liked the Leadscrew manual feeding.
I have made many disks with holes , many different setups,? and every time I think I have done the best.
Therefor is this lathe group being so interesting, a lot of new?ideas show up.
I needed to make a ratchet, 10 deg undercut, 60 teeth, so I first made the dividing disk,120 holes, in the lathe.
Moved it over to the Mill and did the job.?
(just remember to do the cutting on the correct side !!)
The picture shows the setup.
Johannes
Mexico
?
toggle quoted message
Show quoted text
That was my instant thought as well. Something like this:?
It won¡¯t work as a crank AND dividing head for your use case, but for the times you need to crank the lathe by hand (like when making a large thread or worm gear ) ?it will work better than trying to get enough torque to do it with the lathe motor.
Christophe has a bunch of really elegant tools and builds.
On Feb 13, 2025, at 2:23?PM, Ellis Cory via groups.io <ellis103@...> wrote:
Hi Johannes. You don¡¯t need an extra crank.
?
As your dividing disc uses the outer edge for measurement. Just drill a suitable hole in the disc, with a suitable bolt and handle, this can be attached when
you need it and removed when you don¡¯t.
?
??????????????? Ellis
?
?
?
I have a big dividing disk on the left side of my lathe. ?So no space for the crank.
However, after some days use, I will use my new crank much more.
--?
Bruce Johnson
The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.
|
Re: Milling Attachment on mini lathe
Great idea?
?
I am planing that?
I have? aluminum bar stock and bearings planing on putting a large dial on at same time.? The new cross feed screw is exta long so I can adjust for bearings.??
?
Dave?
?
?
?
?
|
Re: Milling Attachment on mini lathe
Mill ATTACHMENT on workbench.?
?
Dave  
|
Re: Milling Attachment on mini lathe
Ya can smooth that thing up some by installing a thrust bearing
& washers under the dial .
animal
On 2/13/25 4:21 PM, davesmith1800
wrote:
toggle quoted message
Show quoted text
I
am put a Milling Attachment on mini lathe that post photos
there milling attachment.?
?I
have a new copy of Tiag type milling attachment. From
Walmart.? Look how did on Littlemachineshop.com.? They
made it offset why?
?
I
have this since Nov 2023 from Amazon and just getting
around to installing on the lathe. I have look putting on
compound but that is unstable so going to put on the cross
slide like others have done on internet but it always
great even if bad.?
?
Dave?
?
FYI I
finished rotary table.?
Nice
light easy to use and setup.
?
?
?
?
?
?
e
Attachments:
|
Milling Attachment on mini lathe
I am put a Milling Attachment on mini lathe that post photos there milling attachment.?
?I have a new copy of Tiag type milling attachment. From Walmart.? Look how did on Littlemachineshop.com.? They made it offset why?
?
I have this since Nov 2023 from Amazon and just getting around to installing on the lathe. I have look putting on compound but that is unstable so going to put on the cross slide like others have done on internet but it always great even if bad.?
?
Dave?
?
FYI I finished rotary table.?
Nice light easy to use and setup.
?
?
?
?
?
?
e
|
Re: Cutting with rotating cutter
That was my instant thought as well. Something like this:?
It won¡¯t work as a crank AND dividing head for your use case, but for the times you need to crank the lathe by hand (like when making a large thread or worm gear ) ?it will work better than trying to get enough torque to do it with the lathe motor.
Christophe has a bunch of really elegant tools and builds. On Feb 13, 2025, at 2:23?PM, Ellis Cory via groups.io <ellis103@...> wrote:
Hi Johannes. You don¡¯t need an extra crank. ? As your dividing disc uses the outer edge for measurement. Just drill a suitable hole in the disc, with a suitable bolt and handle, this can be attached when you need it and removed when you don¡¯t. ? ??????????????? Ellis ? ? ? I have a big dividing disk on the left side of my lathe. ?So no space for the crank. However, after some days use, I will use my new crank much more.
--?
Bruce Johnson
The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.
|
Re: Cutting with rotating cutter
Yes Ellis I have made many disk with holes, however they are not precise enough. So now I have 1502 x 2 steps to help me. 1/2 mm is also a step. Johannes ? Lavoll. ? ? ? ? ? ? ?
toggle quoted message
Show quoted text
On 13 Feb 2025, at 15:23, Ellis Cory via groups.io <ellis103@...> wrote:
? Hi Johannes. You don¡¯t need an extra crank. ? As your dividing disc uses the outer edge for measurement. Just drill a suitable hole in the disc, with a suitable bolt and handle, this can be attached when you need it and removed when you don¡¯t. ? ??????????????? Ellis ? ? ? I have a big dividing disk on the left side of my lathe. ?So no space for the crank. However, after some days use, I will use my new crank much more.
|
Re: Cutting with rotating cutter
Hi Johannes. You don¡¯t need an extra crank. ? As your dividing disc uses the outer edge for measurement. Just drill a suitable hole in the disc, with a suitable bolt and handle, this can be attached when you need it and removed when you don¡¯t. ? ??????????????? Ellis ? ? ? I have a big dividing disk on the left side of my lathe. ?So no space for the crank. However, after some days use, I will use my new crank much more.
|
Re: Cutting with rotating cutter
I have a big dividing disk on the left side of my lathe. ?So no space for the crank. However, after some days use, I will use my new crank much more.
Johannes ? Lavoll. ? ? ? ? ? ? ?
toggle quoted message
Show quoted text
On 13 Feb 2025, at 11:15, John Mattis via groups.io <john.mattis@...> wrote:
? I have found that to get the best finish when turning I hand feed toward the head stock and power feed toward the tail stock. By the way, high?speed?steel?is better than carbide on?our mini lathes. For cutting thread I use a 9-inch diameter hand wheel that is secure to the spindle bore. I have also made a modification to the change?gears to allow them to be adjusted easier. Drawings and photos are available if you request, just email me. Regards, John Mattis (retired mechanical engineer) Over the years, I've also considered doing this mod to add a crank to the end of the leadscrew, even though I've rarely had the "need" for this feature. But, in a recent hack, I did add a crank, but on the left-hand end of the lead-screw. (see photo). Just a thin metal arm secured underneath the cap screw that holds the plastic gear. Not sure if this arrangement is any better or worse than attaching a crank on the right-hand end of the leadscrew, but my hack did not require any permanent mods to the lathe, and can be quickly installed and removed if needed.
?
<IMG_20250213_105432.jpg>
|
Re: Cutting with rotating cutter
I have found that to get the best finish when turning I hand feed toward the head stock and power feed toward the tail stock. By the way, high?speed?steel?is better than carbide on?our mini lathes. For cutting thread I use a 9-inch diameter hand wheel that is secure to the spindle bore. I have also made a modification to the change?gears to allow them to be adjusted easier. Drawings and photos are available if you request, just email me. Regards, John Mattis (retired mechanical engineer)
Over the years, I've also considered doing this mod to add a crank to the end of the leadscrew, even though I've rarely had the "need" for this feature. But, in a recent hack, I did add a crank, but on the left-hand end of the lead-screw. (see photo). Just a thin metal arm secured underneath the cap screw that holds the plastic gear. Not sure if this arrangement is any better or worse than attaching a crank on the right-hand end of the leadscrew, but my hack did not require any permanent mods to the lathe, and can be quickly installed and removed if needed.
?
|
Re: Cutting with rotating cutter
Over the years, I've also considered doing this mod to add a crank to the end of the leadscrew, even though I've rarely had the "need" for this feature. But, in a recent hack, I did add a crank, but on the left-hand end of the lead-screw. (see photo). Just a thin metal arm secured underneath the cap screw that holds the plastic gear. Not sure if this arrangement is any better or worse than attaching a crank on the right-hand end of the leadscrew, but my hack did not require any permanent mods to the lathe, and can be quickly installed and removed if needed.
?
|
Re: Cutting with rotating cutter
The fitted thrust washer to reduce axial play was part of my overly elaborate sealing arrangement to keep swarf out of the control box.
?
Roy
|
Re: Cutting with rotating cutter
Your setup looks a lot like mine.? In addition to the crank, I made a replacement block that has pockets for thrust bearings.? That reduced the backlash quite a bit.? The OEM design has a lot of "slop" between the blocks and lead screw, which permits a LOT of backlash.
?
A custom-made washer the right thickness would do much the same thing.
|
Cutting with rotating cutter
Hi Roy
Thanks, I have now made an external lead screw crank.
Let see what happens after 144 teeth cuts on a 3.465 inch ? wheel .
Johannes Lavoll.
|
Re: Here list of charts & Tables
When purchased my copy they did not? have small book. The small book came years later.?
The three ring binder works better because only has what I need.?
?
Dave?
|
Re: Here list of charts & Tables
The Machinery's Handbook I bought included a pocket reference, perhaps to reduce wear & tear on the big everything-but-the-kitchen-sink book.
|
davesmith1800
Johannes
John Mattis
