Oops.
In my last post I had a type for the Little Machine Shop home page.? It should be?
Charles E. "Chuck" Kinzer
On Saturday, March 9, 2024 at 10:17:39 AM PST, Charles Kinzer <ckinzer@...> wrote:
IF it is actually a Sieg manufactured lathe (or close to it) the "Little Machine Shop" may be able to help.
This is a Sieg C2 Diagram somewhere at their site.? I don't know how to find it within their site but found this link in a general search.? It is not the same as the diagram in the last post, but certainly similar.? I think they are all similar.
Little Machine Shop can probably help with references to parts on this model C2 drawing.
On the Little Machine Shop site which is here:??
You can click on "Support" and then "User's Guides" and you get a page full of machines.? The SIEG C3 lathe may the closest one to yours on the page (not sure about that).? If you click on it, you get its user's guide.? If you click on that you get its exploded view diagram AND a parts list.? Little Machine Shop can probably work from the information there.
Here is a direct link to that C3 User's guide.
I noticed a blog comment online of somebody else having a lot of trouble getting the correct Vevor manual as they received the one for the wrong sized lathe with their machine.
Charles E. "Chuck" Kinzer
On Saturday, March 9, 2024 at 09:42:40 AM PST, davesmith1800 <davesmith1@...> wrote:
That is a on going problem with parts list. This may help . I got it from someone else that got it from Vevor with lot of trouble.? Dave?
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Hi Dave I have LMS 5100 lathe catalogue in .pdf format, want it ? ? /johannes ? ? ?
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From: davesmith1800Sent: laurdag 9. mars 2024 11:47 To: [email protected]Subject: Re: [7x12MiniLathe] Vevor parts ? If need parts try little machine shop.?
I am same boat if tooling or part it is hunt surprising I can find all tooling and parts i need.?
Dave?
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IF it is actually a Sieg manufactured lathe (or close to it) the "Little Machine Shop" may be able to help.
This is a Sieg C2 Diagram somewhere at their site.? I don't know how to find it within their site but found this link in a general search.? It is not the same as the diagram in the last post, but certainly similar.? I think they are all similar.
Little Machine Shop can probably help with references to parts on this model C2 drawing.
On the Little Machine Shop site which is here:??
You can click on "Support" and then "User's Guides" and you get a page full of machines.? The SIEG C3 lathe may the closest one to yours on the page (not sure about that).? If you click on it, you get its user's guide.? If you click on that you get its exploded view diagram AND a parts list.? Little Machine Shop can probably work from the information there.
Here is a direct link to that C3 User's guide.
I noticed a blog comment online of somebody else having a lot of trouble getting the correct Vevor manual as they received the one for the wrong sized lathe with their machine.
Charles E. "Chuck" Kinzer
On Saturday, March 9, 2024 at 09:42:40 AM PST, davesmith1800 <davesmith1@...> wrote:
That is a on going problem with parts list. This may help . I got it from someone else that got it from Vevor with lot of trouble.? Dave?
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Grizzly is my go-to source for mini lathe parts, although I have no complaints with LMS.
Grizzly sells a 7x12 and a 7x16.? Part numbers for the (presumably) common parts between them are different and the 7x16 parts tend to be more expensive.? But both LMS and Grizzly have pics online which is helpful.
Can also often find parts on Aliexpress, but my experience is that can be a bit of a crap shoot, and the search sucks like most sites these days so finding anything is unreasonably difficult.
On Saturday, March 9th, 2024 at 12:42 PM, davesmith1800 <davesmith1@...> wrote:
That is a on going problem with parts list.
This may help . I got it from someone else that got it from Vevor with lot of trouble.?
Dave?
Attachments:
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If need parts try little machine shop.?
I am same boat if tooling or part it is hunt surprising I can find all tooling and parts i need.?
Dave?
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That is a on going problem with parts list.
This may help . I got it from someone else that got it from Vevor with lot of trouble.?
Dave?
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The Vevor 7x14 lathe I bought has no parts list and does not always match what is on other mini lathes. The quality of the parts has not always been the best. The keyway in the shaft for the "A" timing gear is not centered and does not allow the gear to go on without a lot of force. I need to prey it off with a screwdriver which takes a lot of one side/other side reps. The plastic timing gear are VERY tight on the shafts. The timing belt has 90 teeth rather then the standard 70. If I knew all of this before I bought it I would have passed on it. Has anyone else had any problems?
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Re: Grinding Shaper Tools
Hello, Mike!
Do you have access to a Deckel type tool grinder?
If not you could easily make a simple jig to do this.
Of course this would not be a quick solution but you would then have this jig for future needs.
Dick
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Re: Grinding Shaper Tools
I also use the bench grinder for drill bits too.?
I have been so long I forget the pain of learning.? All I had was bench grinder.?
Dave?
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Re: Grinding Shaper Tools
I have seen few over years.
All I use is a 6" bench grinder.?
Dave?
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(I realize this is a minilathe group, not a shaper group, but there are shaper owners on here, plus many ingenious people, so I'm forwarding this post I sent to a shaper group).
One advantage of a shaper over a milling machine is that to cut, say, a
groove of a certain size, you don't need a specific milling cutter but can
just grind a shaper tool of that size.
But the disadvantage of this is that you HAVE to grind it and grind it
right. I'm having problems in this area. To make, for example, a 1/4"
groove tool, I have to grind a tool that's exactly 1/4" across in front,
but with side relief and front relief, and tapering slightly back from the
cutting edge on top. Tricky to do this right, and if I overshoot any of
these, the tool isn't 1/4" wide on top anymore and I have to start again.
Has anyone here developed any jigs or procedures to help grind shaper tools
better?
Mike Taglieri
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Machining a strait knurl is an easy and clean way to produce a knurl. It does however require a means of dividing such as using a dividing head of some type.
If one uses this method it is good to not produce a sharp knurl.
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Re: What's happend to my knurling???
Knurling is ?“not” a cutting operation but a forming operation. Keep that in mind. Too much swarf is an indication of not enough force being applied and doesn’t produce a clean knurl.
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Re: What's happend to my knurling???
?stuck at the wrong heigth by some chips ?
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Re: What's happend to my knurling???
The work diameter should follow the rules here:
?<??>
for the cleanest knurl. On the 7x lathes, a scissor type knurling tool usually gives better results than the classic bump knurler that's common on larger machines.
Roy
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Re: What's happend to my knurling???
Pull the knurl wheels a measure them . Knurling takes a lot of
pressure & sometimes? much more pressure then ya would think
to make a good knurl .Pressure also varies depending on the
material yer using . Like mentioned go in hard & fast . Be
extra careful if yer using a brush to apply yer cutting fluid . If
the bristles get caught & sucked into the knurl wheels we may
be having a different conversation '
good luck
animal
On 3/7/24 1:39 PM, Bill Williams wrote:
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It appears that one knurl is engaging deeper than
the other. This one direction gives a doubled knurl and? the
other a correct knurl.
I
agree with OldToolmaker?
You need cutting and aggressive.?
Watch videos on screw machines doing knurling.
Dave?
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Re: What's happend to my knurling???
It appears that one knurl is engaging deeper than the other. This one direction gives a doubled knurl and? the other a correct knurl.
I agree with OldToolmaker?
You need cutting and aggressive.?
Watch videos on screw machines doing knurling.
Dave?
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Re: What's happend to my knurling???
I agree with OldToolmaker?
You need cutting and aggressive.?
Watch videos on screw machines doing knurling.
Dave?
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Re: What's happend to my knurling???
For successful knurl use the following steps.
1) Use cutting oil
2) Position the knurling tool as close as possible to headstock.
3) Switch lathe on and advance the knurling tool into the cut as quickly as possible and do not dwell. You must be aggressive here.
4) Do not retract knurling tool until knurl is complete as you don’t want a double cut knurl. It will be almost impossible to pick up a partially completed knurl.
I have not had a bad knurl in many years. Remember be aggressive!
Dick
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What's happend to my knurling???
 I made a knurld ring on my brass knob.  ?but, as the result, something wrong with the knurld surface. it's not even crossing each other. How can i solve this ? i turned on my lathe with 240 RPM and fed with my hand.
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Johannes
chrisser
davesmith1800
OldToolmaker