mini turning

This topic has 16 replies, 9 voices, and was last updated 24 April 2019 at 12:23 by Roger Hulett.

Viewing 17 posts - 1 through 17 (of 17 total)

Author

Posts
11 April 2019 at 13:32 #9619
Roger Hulett
Participant
@rogerhulett83124
Advert

11 April 2019 at 13:32 #404607
Roger Hulett
Participant
@rogerhulett83124
I have a 70mm x 5mm brass rod. I need to turn this down to 3mm. At one end there needs to be a 45degree angle to take the rod from the turned 3mm to the original 5mm. I have a 1939 South Bend 9" a small Pools horizontal mill. Rotary Table, Vertical slide. Pillar drill

Advice on the correct procedure to carry this out will be very much appreciated.
11 April 2019 at 13:47 #404608
Former Member
Participant
@formermember19781
[This posting has been removed]
11 April 2019 at 14:39 #404615
mechman48
Participant
@mechman48
+1 for drilling, solder then bend, easiest way as Bills method above.

George.
11 April 2019 at 14:43 #404617
JasonB
Moderator
@jasonb
How long is the 3mm section?

If it is long do you have spare material for tailstock support?
11 April 2019 at 14:57 #404618
Roger Hulett
Participant
@rogerhulett83124
Sorry, did not explain myself correctly. I should have said the 3mm diameter will TAPER

out to the 5mm diameter.
11 April 2019 at 16:09 #404626
Former Member
Participant
@formermember19781
[This posting has been removed]
11 April 2019 at 17:23 #404639
Samsaranda
Participant
@samsaranda
Sharp tool and required angular offset on the tool holder, with 5mm brass rod you wouldn’t need any support or steady, I have made fuel control needles in smaller diameter brass without problems, you need a sharp tool and shallow cuts.

Dave W
11 April 2019 at 18:17 #404647
JasonB
Moderator
@jasonb
Posted by Samsaranda on 11/04/2019 17:23:24:

Sharp tool and required angular offset on the tool holder, with 5mm brass rod you wouldn’t need any support or steady,

I would if the taper is over the full 70mm length, a question that has not yet been answered.

Edited By JasonB on 11/04/2019 18:17:57
11 April 2019 at 18:18 #404648
Emgee
Participant
@emgee
Roger, if you only need a short length of 3mm diameter use a facing & turning tool which is ground to 45 deg angle to the lathe axis, either take 1 x 1mm DOC or a series of cuts to achieve the 3mm diameter, at the 1mm DOC you will have your 45 deg transition from 3-5mm.

Emgee
12 April 2019 at 17:44 #404785
Former Member
Participant
@formermember19781
[This posting has been removed]
12 April 2019 at 17:51 #404786
Neil Wyatt
Moderator
@neilwyatt
If the tape angle is 45 degrees as stated, then an angled tool will do the job.

Mount 5mm rod in the mill, set up a tool in the vertical slide attached to the table and do the job with a single cut.
12 April 2019 at 18:01 #404787
duncan webster 1
Participant
@duncanwebster1
Posted by Neil Wyatt on 12/04/2019 17:51:55:

If the tape angle is 45 degrees as stated, then an angled tool will do the job.

Mount 5mm rod in the mill, set up a tool in the vertical slide attached to the table and do the job with a single cut.

why use a milling machine when the OP has a lathe?
13 April 2019 at 11:28 #404878
Roger Hulett
Participant
@rogerhulett83124
OK everyone,Thanks very much. Job done. 45degree tool did the job.
13 April 2019 at 11:52 #404883
Former Member
Participant
@formermember19781
[This posting has been removed]
13 April 2019 at 13:01 #404893
Ian S C
Participant
@iansc
A rough sketch on a bit of paper with a pencil can be useful.

Ian S C
24 April 2019 at 12:23 #406247
Roger Hulett
Participant
@rogerhulett83124
It's all I can do to work a lathe and type letters on a computer Asking me to take pictures or draw sketches and post them…….well. …………..Now …………… If my great grandson was here…….. no prob.
Author

Posts