Parting off tools and holders

[prepman]

Of course it did! Never any doubt. Well done. Everyone who has anything less than a really rigid lathe should have one, if practical.

Certainly was never going to be a wasted effort.

The cutter on mine is mounted in a holder which, in turn, is mounted to the tool post. The holder was designed (I think) for the slightly bevelled cutter, so the tool,post has a simple rebated slot for the holder. Makes no difference to the operation, but on occasions the extra stiffness of the holder helps if the cutter .needs extending from the post

I've tried to minimise any overhang. There isn't any. So the post is only for one purpose, can't be used for anything else. Might weld another section to increase rectangular long-side for additional stability.

 

[prepman]

Feedrate is 0.007"/4 = 0.00175"/rev. So at 500rpm = 0.875"/min off radius. So 1.75"/min off diameter.
Almost 2"/min. That'll do nicely.

 

[prepman]

Tidied up..a bit. Put blade lip locating pins and cleaned up in shaper after welding up mistakes.
Might clean front up as well. Very pleased so far. Could put guide keys on bottom to align post. Wouldn't need to set up each time?

 

[prepman]

Further on...added a rear foot for greater stength. Shaped it all up. Dropped a lot of b*****ks and had to reweld and re-plane base. This lowered the height so it's now shimmed.
But turned out great... Can use front toolpost without dismantling it. Made a lot of washers

 

[prepman]

Thanks once once again to all for your contributions and to @hooblah for starting the post. Hope you've resolved your issue?
It's very encouraging when others show an interest, rather than working in a technical vacuum.

 

[minimutly]

That's another job added to the tuit list then - thanks.

 

[hooblah]

Thanks once once again to all for your contributions and to @hooblah for starting the post. Hope you've resolved your issue?
It's very encouraging when others show an interest, rather than working in a technical vacuum.

I had almost completed this project, but then I ended up tapping the wrong size thread for my tool post stud

 

[prepman]

I had almost completed this project, but then I ended up tapping the wrong size thread for my tool post stud

I welded the foot on the pedestal on the wrong way i.e lengthways and then found it was also on the wrong side to the tool. So you're not alone.

 

[prepman]

That's another job added to the tuit list then - thanks.

God! You intellectuals......

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[prepman]

There is one finally point. I still need to clamp the saddle. I was getting a bit blase' with it and not clamping and got some rumblings. Thought it was the headstock at first But it was the saddle resonating.

 

[prepman]

 

[prepman]

Without the awful music

 

[fizzy]

I hated parting off until I bought one of the cheap Chinese blades with inserts. Mind you having a Colchester Triumph helps as well. It munches through on power feed no problem at all. I am still on the original tip as well which is amazing although my lathe only gets used once or twice a week.

 

[Seadog]

I am still on the original tip as well which is amazing although my lathe only gets used once or twice a week.

You've not been trying then

 

[fizzy]

You've not been trying then

I certainly don't part off Hood style

 

[striker]

I have the mgehr1212 with tips. It works well on my lathe but the depth of cut is limited, so I still use the HSS one in its holder for larger diameters.

 

[prepman]

I hated parting off until I bought one of the cheap Chinese blades with inserts. Mind you having a Colchester Triumph helps as well. It munches through on power feed no problem at all. I am still on the original tip as well which is amazing although my lathe only gets used once or twice a week.

That's real skill....... I've had a chequered history with parting, Banned as an apprentice for endangering the life of the turner on the next lathe. Never really was comfortable with it over the past 5 ~60yrs. But then again mech' engineering isn't my trade purely hobby. Certainly not turning and welding.

 

[prepman]

Next potential project is making a taper turning attachment.

 

[prepman]

If I was to get round to making one, my starting point would be a length of hydraulic cylinder piston rod and some good quality linear bearings.

An early taper turning attachment for my old lathe went for around £150, after collection, last week. Now appears to be the same one (cleaned up a bit) on epay for £750!

Around a grand for one. IF you can find one.
There's an incomplete one on eBay for the 2000,etc at £350. I have plenty of large round bars stock and flats. Plus some hydraulic cylinders. I had Morse tapers in mind. Real pain using topslide. Might have to make the feed screw (again). Quite enjoy making Acme threads. I love it when someone says something's really difficult. Makes me more determined.

 

[prepman]

If I was to get round to making one, my starting point would be a length of hydraulic cylinder piston rod and some good quality linear bearings.

An early taper turning attachment for my old lathe went for around £150, after collection, last week. Now appears to be the same one (cleaned up a bit) on epay for £750!

Yours?