- Thread starter God mode restorations
- Start date
Hood
I am obsessed.
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Almost any steel can have a good finish, secret, with carbide, is not to tickle. Take a cut at least as deep as the nose rad, especially when boring, and try to take your finish cut at that depth as well.
Munkul
Jack of some trades, Master of none
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Or cheat and use an ultra sharp positive insert for a light finish pass
Only works when there's no chatter though... tried boring 75mm deep with my cheap 12mm boring bar, in a plain holder with two screws... horrible tip-breaking chatter at any speed, feed and DOC... I think I need some sleeves, and/or a better quality bar. It gives a lovely finish with less stickout, it just wasn't rigid enough for what i tried to do, even with those inserts.
Still waiting for an insert screw for my 16mm bar, so ended up just drilling it straight to 20mm. Not ideal.
Brad93
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- Essex, United Kingdom
Yeah that’s smart. I struggle to get anything like that. On EN24 that finish is pretty easy to achieve but mild steel always turns rough for me. Could be the headstock bearings too though or gibs need adjusting.
Brad93
Member
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- 18,338
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- Essex, United Kingdom
Carbide bar for small holes. 5xDOr cheat and use an ultra sharp positive insert for a light finish pass
Only works when there's no chatter though... tried boring 75mm deep with my cheap 12mm boring bar, in a plain holder... horrible tip-breaking chatter at any speed, feed and DOC... I think I need some sleeves, and/or a better quality bar. It gives a lovely finish with less stickout.
Still waiting for an insert screw for my 16mm bar.
Hood
I am obsessed.
- Messages
- 17,308
- Location
- Carnoustie, Scotland
You learn your way with carbide, totally different than using HSS. You need to feed it and need to take a reasonable DOC as well. Get it chipping and you are on the right track. Stringers are not a good sign with carbide.
Munkul
Jack of some trades, Master of none
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- 7,520
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- Cumbria
60mm stickout would have still chattered too much
50mm or less works fine. Like I say, the inserts are unreal, but its the setup that lets it down. Two screws in a standard holder, and a couple bits of flat bar packing...Given that most of what I'll do will be small bars, I'll have to improve the setup somehow.
Hood
I am obsessed.
- Messages
- 17,308
- Location
- Carnoustie, Scotland
Bars from decent makes are much better, they are not made of cheese and tend to chatter less.
TPMR is a good insert to get on a boring bar but not as common nowadays.
Having said that my two favourite bars are a Seco with WNMG and a Stellram with EPEX inserts.
TPMR is a good insert to get on a boring bar but not as common nowadays.
Having said that my two favourite bars are a Seco with WNMG and a Stellram with EPEX inserts.
eLuSiVeMiTe
Member
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- 16,441
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- ......
From this.
To this.
To this.
eLuSiVeMiTe
Member
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- 16,441
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- ......
The new bits level. The old roof. Not so much. Such is life.
Barking Mat
Cuddler of hedgehogs.
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- 12,917
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- France, Brittany.
Very tidy work, nice one.
Tangledfeet
Think outside, no box required.
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- 3,111
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- Top of a hill above St Andrews, Fife
Hideous, truly so... the 'project' I had a false start with a few days ago; no planning or design at all, made it up as I went along - and it shows. Haven't a clue whether the solid plastic and rubber wheels are even strong enough for two BOC 'Y' cylinders...
Means I/we can actually use the lovely, yellow, well balanced and highly ergonomic (and if I recall Danish made) sack truck we've had for a few years but was very quickly stolen by me for the gas bottles.
Means I/we can actually use the lovely, yellow, well balanced and highly ergonomic (and if I recall Danish made) sack truck we've had for a few years but was very quickly stolen by me for the gas bottles.
Woody.v8
Blue gluer
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- staffs
Well it's got me this farMake it up as you go along - the most fun type of project, to me
Onoff
In the land of the unfinished project I am King!
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- Sevenoaks, UK
In the video I posted the other day...
I start cutting and the tool doesn't slow down appreciably tbh. However the green led does go out under load.
I might help if I can find the manual that came with the tool!
