OMG i broke it.

[T0rnado69]

was putting a groove in some 18mm bar.
down to 10mm and 4mm wide in total.

did one fine and was half way doing the second one and it broke

aww well, it came as part of a kit with the knurling tool.

been used a lot so not too worry...

so what parting tool to go for now.
what you lot use ?

 

[brightspark]

heres a nice one if it goes cheap enough and will fit in toolpost http://www.ebay.co.uk/itm/Parting-T...888772?hash=item3abe5d4d04:g:lWAAAOSw~OVW0fs0

 

[AndyStobbs]

I recently snapped the holder on my HSS blade, which was a Gloucester tool I think, took 3/4" blades. Was always a bit weedy, the clamp rail on the top too thin.
Just bought a 32mm indexable blade, and 25mm holder from Gloucester again which seems much better.

 

[MattF]

Like that one Brightspark linked to, you can't beat a J&S. Check on the size before bidding though. Some of their kit is bleedin' huge.

 

[ronan]

Indian engineering at its finest

 

[T0rnado69]

cheers guys.

 

[Maker]

Like that one Brightspark linked to, you can't beat a J&S. Check on the size before bidding though. Some of their kit is bleedin' huge.

I've got a J&S knurling tool and I can confirm that it's huge. I milled it so it would fit in my tool holder before I saw how much people list them on eBay for.

 

[optima21]

Im using one from Chronos in my tiny Hobbymat lathe. the holder I have has 5/16" shank and uses the 10mm tall blade.

http://www.chronos.ltd.uk/acatalog/...ool-s-with-Chipbreaker-Blade--5--cobalt-.html

and here is is parting off some 60mm steel bar

 

[MattF]

Checked the size of one of mine last night. A 42-S has a shank height of a gnats under 1", so that 43-S will likely be a fair size.

 

[MattF]

I've got a J&S knurling tool and I can confirm that it's huge. I milled it so it would fit in my tool holder before I saw how much people list them on eBay for.

Do they get the asking price though? Is yours one of the rotating, six wheel jobbies?

 

[Pete.]

View attachment 80581

was putting a groove in some 18mm bar.
down to 10mm and 4mm wide in total.

did one fine and was half way doing the second one and it broke

aww well, it came as part of a kit with the knurling tool.

been used a lot so not too worry...

so what parting tool to go for now.
what you lot use ?

You got miles miles too much stick-out for 18mm bar. You only need radius plus a tiny bit, and keep the holder tight back against the tool post.

 

[T0rnado69]

ohhhhh well never mind pete,

its dead now..... time to bury it and all.
and move on to a new'er model

 

[tinman123]

if its any help.
the one i have here is an iscar type that looks identical to this.

it fits in my harrison 12" lathe which can only take up to 25mm in the tool post so its not big by any means, the tip on mine is 3mm wide which is good enough for what i do right now at least but in good time ill be buying a bigger lathe and will buy a bigger parting off tool but id have no problem in buying a bigger brother of this one.

 

[ronan]

Iscar do good stuff, i bought a fair bit of it in the old job and it never let me down.

 

[tinman123]

the stuff is good alright, mind you it would want to be wouldnt it given how long they are at it and times the price of it.

i think the only time you appreciate a good quality tool in a lathe is for instance the likes of a boring bar or some other tool that you have to hang out a lot more than you would like, with the likes of a boring bar the reduction in harmonics would be the saving grace in the quality gear, but again, the price of some of it....
i buy most of my machine tools off e bay, i try to let the first man get the biggest slap.

 

[hunter27]

Just bought one of these http://www.axminster.co.uk/glanze-parting-tool-ax863364 they had an offer on for £5 off on your first purchase to new customers.
It seems to work well but on first attempt the tip went out of alignment with the tool ? it may have been me not setting it quite straight to start with. Been okay after that though. If you don't know the cutting tip just slides into the end of the holder.
Pete

 

[tinman123]

same holder too.
i wonder what its like compared to the bigger players, the block bit id be ok but i wonder would there be much of a difference in the blade holder end of things, id hope so at least as iscars version i see there would set you back £250+ the vodka and tonic.

id be keeping an eye on these personally.
http://www.ebay.co.uk/itm/iscar-par...252575?hash=item3d13dcf41f:g:zEQAAOSwP~tW328k
http://www.ebay.co.uk/itm/Parting-o...946878?hash=item25b81188fe:g:hXEAAOSwoudW4CBs

 

[Wedg1e]

I snapped a J&S parting tool holder in the Boxford; it was a fairly clean break with minimal distortion so I aligned the broken halves and TIGed it back together, vee-ing out each side in turn as I went.
Hasn't snapped yet
I rather assumed it was a forged part but the grainy surface of the break suggested it's just cast.

 

[Wedg1e]

I've got a J&S knurling tool and I can confirm that it's huge. I milled it so it would fit in my tool holder before I saw how much people list them on eBay for.

Push type or clamp? The push type is the work of the devil and should be melted down for scrap.

 

[Maker]

Push type or clamp? The push type is the work of the devil and should be melted down for scrap.

Push type, with 3 different pairs of wheels to give different sizes of knurl.