M30 thread cutting

[thefixer]

Hoping someone can help me here.How is the M30 thread cut on the spindle of a lathe? Is it turned on a machine lathe or can it be cut with a thread die? The reason I ask is because I have in my hot little hands a length of 30 mm steel rod that I would like to have threaded at one end to be able to fit my scroll chuck to.An idea I am working on at the moment. And if anyone knows how, do you also know someone that can do it for me? Preferably in the eastern or south eastern burbs of Melbourne.Mates rates would also be appreciated

Cheers
Shorty

[DJ’s Timber]

For a lathe spindle I'd say with 99% certainly that it'd be cut on a CNC lathe but you can get it done with a die or on a normal lathe.

It's just a matter of finding someone who is geared up for it.

Try posting a need a 30mm x 3.5mm thread turned in the METALWORK FORUM

[funkychicken]

you can get it done with a die

You'll pay a mint for a die that big though. I can cut it on my metal lathe if you want

[Enfield Guy]

Can be done both ways. Have a firm grip of the sales counter when you ask the price of the die at the tool shop. It also depends on the grade of steel bar you have. Harder alloys will be harder to machine either way. Have you run a file over the bar somewhere? If you can gouge the material easily with the file I would just go and buy the die. If the file skips and scratches rather than gouges then take it to a machine shop. Hold counter firmly when price is quoted.

[funkychicken]

I can't get a 30mm die from my supplier, so there's a chance it doesn't exist. You could get a custom made one, but cutting on a lathe would be a better idea

[unicorn]

Hi, I remember buying a lenght of threaded rod about 900 long years ago, 30X3.5 thread. If you check on bolt suppliers, you may get lucky!

[thefixer]

For a lathe spindle I'd say with 99% certainly that it'd be cut on a CNC lathe but you can get it done with a die or on a normal lathe.

It's just a matter of finding someone who is geared up for it.

Try posting a need a 30mm x 3.5mm thread turned in the METALWORK FORUM

Good call DJ. I'll give that a go.
Cheers
Shorty

[thefixer]

Hi, I remember buying a lenght of threaded rod about 900 long years ago, 30X3.5 thread. If you check on bolt suppliers, you may get lucky!

I don't think I could ever get that lucky But I'll give it a go. Thanks Unicorn

Cheers
Shorty

[DJ’s Timber]

I can't get a 30mm die from my supplier, so there's a chance it doesn't exist. You could get a custom made one, but cutting on a lathe would be a better idea

Just cause your supplier can't supply one, it doesn't meant that you can't buy one. I've got dies up to 2" and I'm pretty certain a mate of mine has one in 30mm as well.

[Grumpy John]

..............
Preferably in the eastern or south eastern burbs of Melbourne.Mates rates would also be appreciated

Cheers
Shorty

There are plenty of small machine shops in the Dandenong/South Dandenong area that would probably do it for you. Depending on what it's worth to you, you might even get it done for that universal currency, a slab . I would offer to do it for nix, but I no longer have access to lathes. If you get stuck PM me, I still have some contacts.

[thefixer]

Can be done both ways. Have a firm grip of the sales counter when you ask the price of the die at the tool shop. It also depends on the grade of steel bar you have. Harder alloys will be harder to machine either way. Have you run a file over the bar somewhere? If you can gouge the material easily with the file I would just go and buy the die. If the file skips and scratches rather than gouges then take it to a machine shop. Hold counter firmly when price is quoted.

It's bright mild steel EG, shouldn't be too hard to cut. Just a matter of finding someone thats geared up to do it.

Cheers
Shorty

[BobL]

Guys - Mcjing have 30 x 3.5 taps and dies for a whole . . . . . . . . .$18 each!!!!

I bought the tap last year and made a couple of Ally face plates for my WW lathes. I drilled the holes with an 27 mm MT2 drill I borrowed from work

The tap you can turn with a pair of adjustable spanners, but the die is 65 mm in diameter ! I have been meaning to buy a die but I want to make the die holder first.

Cheers

[thefixer]

Guys - Mcjing have 30 x 3.5 taps and dies for a whole . . . . . . . . .$18 each!!!!

I bought the tap last year and made a couple of Ally face plates for my WW lathes. I drilled the holes with an 27 mm MT2 drill I borrowed from work

The tap you can turn with a pair of adjustable spanners, but the die is 65 mm in diameter ! I have been meaning to buy a die but I want to make the die holder first.

Cheers

Thats great information. Thanks Bobl. I'll check out the web site.

Cheers
Shorty

[Skew ChiDAMN!!]

Just cause your supplier can't supply one, it doesn't meant that you can't buy one. I've got dies up to 2" and I'm pretty certain a mate of mine has one in 30mm as well.

Well said.

http://www.metric-tools.com/page/page/4024230.htm, for example, shows that they are available.

[RETIRED]

M30 allthread is also available. Not sure of pitch but 3,5 is standard.