[4]

Hercus 260 (south Bend Gs26-075)

June Project of the Month [3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

Boris Ludwig

H-M Supporter - Donating Member
H-M Supporter-Donating Member
Joined
Oct 30, 2016
Messages
105
Likes
36
10
#61
Here is the reason for learning the threading...

I got myself a quick change tool holder/post but my lathe doesn't use a "T" nut so I had to make a post bolt to fit the compound slide. The thread is 12 TPI but the nut for the tool post is a metric 2 mm pitch. So I determined to learn what I needed to make one.

20171030_083521.jpg

What made it complicated for a novice like me was that I had to learn and execute both a metric and a whitworth thread.

One last thing I need to do is get some spanner flats milled into it so I can tighten it down in the compound.
But I got it done. Its a very humble achievement but I learnt a lot about how to use this lathe and about general turning too.

20171029_114445.jpg
 
Last edited:

Bob Korves

H-M Supporter - Sustaining Member
H-M Supporter - Sustaining Member
Joined
Jul 2, 2014
Messages
5,107
Likes
5,455
20
#62
Here is the reason for learning the threading...

I got myself a quick change tool holder/post but my lathe doesn't use a "T" nut so I had to make a post bolt to fit the compound slide. The thread is 12 TPI but the nut for the tool post is a metric 2 mm pitch. So I determined to learn what I needed to make one.

View attachment 245611

What made it complicated for a novice like me was that I had to learn and execute both a metric and a whitworth thread.

One last thing I need to do is get some spanner flats milled into it so I can tighten it down in the compound.
But I got it done. Its a very humble achievement but I learnt a lot about how to use this lathe and about general turning too.

View attachment 245612
Very nice job, Ludwig!
 

Boris Ludwig

H-M Supporter - Donating Member
H-M Supporter-Donating Member
Joined
Oct 30, 2016
Messages
105
Likes
36
10
#63
Thanks Bob.

My friends use my first given name, Boris.
 
Last edited:

Boris Ludwig

H-M Supporter - Donating Member
H-M Supporter-Donating Member
Joined
Oct 30, 2016
Messages
105
Likes
36
10
#66
If the "chips" are long like curly hair rather than short "C's" or they are brown or dark blue in colour does that indicate something is incorrectly adjusted like speed or feed rate?



20171103_150813.jpg
 
Last edited:

Boris Ludwig

H-M Supporter - Donating Member
H-M Supporter-Donating Member
Joined
Oct 30, 2016
Messages
105
Likes
36
10
#67
I had a bit of success - 5C collets an adapter - the blokes in the machine section made a draw tube with a hand wheel to fit.

20171212_215046_zpsluuphica.jpg


20171212_215014_zpsxmozib4t.jpg
 

markba633csi

H-M Supporter - Premium Member
H-M Supporter-Premium Member
Joined
Apr 30, 2015
Messages
2,342
Likes
1,214
#69
Hi Boris- How long have you owned your Hercus? How plentiful are they down there?
Mark S.
 

Boris Ludwig

H-M Supporter - Donating Member
H-M Supporter-Donating Member
Joined
Oct 30, 2016
Messages
105
Likes
36
10
#70
Hi Boris- How long have you owned your Hercus? How plentiful are they down there?
Mark S.
Since November last year.

They were relatively common, when I was a high school student in the 70's every high school had at least 6 of them in the metalwork room. Almost every technical college had them as a teaching tool.

Forty years later they are still prized as well made machines. I work at a large technical college in Sydney and in the machining section they have 4. Of course, they have many lathes, all sorts of bigger lathes and CNC lathes etc. too but they still have the Hercus 260.
 

Boris Ludwig

H-M Supporter - Donating Member
H-M Supporter-Donating Member
Joined
Oct 30, 2016
Messages
105
Likes
36
10
#72
Find one first because you won't find one just like that.
 
[6]
[5] [7]
Top