mini turning

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.

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+1 for drilling, solder then bend, easiest way as Bills method above.

George.

How long is the 3mm section?

If it is long do you have spare material for tailstock support?

Sorry, did not explain myself correctly. I should have said the 3mm diameter will TAPER

out to the 5mm diameter.

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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

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

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

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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?

OK everyone,Thanks very much. Job done. 45degree tool did the job.

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A rough sketch on a bit of paper with a pencil can be useful.

Ian S C

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.