- Joined
- Nov 25, 2015
- Messages
- 9,594
@NC Rick he is not talking about boing out the hole. He is showing you the limit of the jaws.
@Alberto-sp You have exceeded what the jaws can handle on the 4 jaw. That's not safe. 3 things can happen:
1 you break the chuck because there's not enough support there.
2 you have a jaw fly out while it's spinning.
3 you hit the carriage with that jaw out that far.
First, your jaws can be turned around on the 4 jaw, when you need to go out that far, yes it will only be grabbing by a smaller amount, but it will be safer.
Your lack of space on your 3 jaw: I see you have another jaw there. You should have 3, those are for grabbing a big part, you put those in, the opposite way of the current jaws and you can grab a bigger part, the same as the 4 jaw.
The entire jaw will not grab, you need to use the landing. But it is safer, if it's a flat part you are good to go, if it's a long part, you need to use the tailstock or steady rest to hold the rest of it.
@Alberto-sp You have exceeded what the jaws can handle on the 4 jaw. That's not safe. 3 things can happen:
1 you break the chuck because there's not enough support there.
2 you have a jaw fly out while it's spinning.
3 you hit the carriage with that jaw out that far.
First, your jaws can be turned around on the 4 jaw, when you need to go out that far, yes it will only be grabbing by a smaller amount, but it will be safer.
Your lack of space on your 3 jaw: I see you have another jaw there. You should have 3, those are for grabbing a big part, you put those in, the opposite way of the current jaws and you can grab a bigger part, the same as the 4 jaw.
The entire jaw will not grab, you need to use the landing. But it is safer, if it's a flat part you are good to go, if it's a long part, you need to use the tailstock or steady rest to hold the rest of it.