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If it has sentimental reasons for keeping, I’d definitely leave it to a professional or you could end up with a piece of scrap

https://www.model-engineer.co.uk/forums/postings.asp?th=118175

It would braze ok, but would also look obviously repaired. You can get cast iron welding rods which would match the colour, but would need to be in the hands of an experienced welder. Expensive too..

These are very good…gives off more heat than a standard torch.. https://www.gasproducts.co.uk/bullfinch-404-autotorch-brazing-gas-blow-torch-kit.html?currency=GBP&gclid=Cj0KCQjw1N2TBhCOARIsAGVHQc412EJe4LVQMqFGlZuiR4naIIvogFaYQrGd9YTvHZRkx0cxT5bwUL0aAtsIEALw_wcB

Picture would help…

Also make sure you are using fresh cement…Look for Blue Circle Mastercrete cement…it has additives to help stop cracking and is more resistant to frost damage.Wicks B&Q, and most building supplies stock it….Thoroughly clean the area with a stiff brush and hose down..brushing a weak mix of PVA...

A diamond cutting wheel is the way to go…cut a notch all round,..then hold it in the vice, slip a good fitting steel tube over the rod to give good leverage and snap it…

He does mention ER32 and 5C collets in his original post, which would point to a metal lathe, but more information would also be useful…ie what’s it for, what actual size is required, and what lathe is it for.. The more information given makes the answers so much easier and relevant..

6 jaw chuck? what’s the maximum size you need? and how big is your lathe? collets are really designed to accurately hold smaller diameters… why do you need large collets?

Sorry…I’d have to kill you…🙄 7/32” BSW….which I had…. A. 12-24 UNC may have fit, but thats one I haven’t got.. Cheers Pete..

Does that mean you could be travelling to or near Manchester in the not so near future? im definitely interested. cheersJohn

Are you travelling near Manchester in the near future?

Thanks for the offer…I’ve decided to try it in the four jaw….going well…👍

Well I bit the bullet and put it in the four jaw…slow speed, small cuts…so far so good… 👍 all done….much easier than I’d over thought it would be …turned out really well.. all part of the learning or turning curve…

I don’t have a cutter suitable, still considering putting it in the chuck…thanks..

More room means more stuff…you never have enough…lol

I’m seriously considering trying the lathe..I’ve got a Warco 250..but I was wondering about the weight and the fact it’s 125mm long.. It’s for a fixed toolpost

I was hoping a local hobbyist may have one…I’ve got about 1/4” to remove. guess I’m going to have to be very skilled and very careful…plus extra weetabix..🙄

Think I’ll get my file out…🙄😂

Just rang a local one…£45 an hour plus vat…😱