- Joined
- Jan 31, 2016
- Messages
- 13,212
Cheap mans boring head . Not a Criterion nor Walhopter but will get you thru non-critical jobs .
Bore or drill a piece of stock in one end true to OD . Turn part around and turn an OD that is offset for your shank . Make another piece that fits your bore with an offset boring bar hole . You have created an eccentric in essence . You can adjust your toolholding piece as well as rotating your bar to achieve your desired size . DO NOT MAKE PLANS FOR G JOBS . ( that way you never make a bad part , it's re-engineering ! )
If accuracy is a must , it is possible to drill a hole to a known dimension and set this head to such hole .
Good luck and happy machining . Dave
Bore or drill a piece of stock in one end true to OD . Turn part around and turn an OD that is offset for your shank . Make another piece that fits your bore with an offset boring bar hole . You have created an eccentric in essence . You can adjust your toolholding piece as well as rotating your bar to achieve your desired size . DO NOT MAKE PLANS FOR G JOBS . ( that way you never make a bad part , it's re-engineering ! )
If accuracy is a must , it is possible to drill a hole to a known dimension and set this head to such hole .
Good luck and happy machining . Dave