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Tool Grinder (maybe)
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11-15-2012, 06:36 AM
Greg,
Looking very smart - the graduations look excellent what sort of tool did you use? Nice bit of machining for the dovetails    DaveH 
11-15-2012, 10:57 AM
Found an engraving bit in some cutter I was given. Basically a D bit with a point, cut surprisingly well at about 3000 rpm.
Free advice is worth exactly what you payed for it.
Greg 
11-15-2012, 11:50 AM
Where's this "split cotter" and where does it go?
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
11-15-2012, 01:06 PM
Its still the imaginary split cotter, two of them, to lock the tool angle and the assembly to a shaft. Maybe today, we'll see.
Free advice is worth exactly what you payed for it.
Greg
11-15-2012, 07:37 PM
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
11-15-2012, 07:51 PM
Nope Steve, pictures to follow. Interesting screw up today. Machined a pin to old two of the parts together. Machined two diameters and a shoulder then single pointed a 7/8 14 tpi thread on the end. Cleaned it up with a solid die, then parted it off. The thread is crooked to the pin. HOW!!!!!! The die should have followed the existing thread, I do this all the time lacking full profile inserts. As you thread the pin in the top makes a lovely circle about 30 or 40 thou out.
Free advice is worth exactly what you payed for it.
Greg
11-15-2012, 09:19 PM
The offending pin. Still no idea how the threads got cut crooked. Ended up cutting them undersized with a split die then locating the pin in a counterbore above the female thread. Probably the way it should have been done in the first place. The split cotter Steve.
![[Image: IMG_0340.jpg]](https://lh4.googleusercontent.com/-PBH6auPS2Bs/UKWgsOvyaQI/AAAAAAAAAyQ/4Z5wGiR8XL4/s1280/IMG_0340.jpg) How it clamps the shaft. ![[Image: IMG_0338.jpg]](https://lh6.googleusercontent.com/-NCMDb6Qy6lU/UKWgrwBxGDI/AAAAAAAAAyY/Komq_EQWoSU/s1280/IMG_0338.jpg) And the assembly, need to make a handle with thread to tighten the clamp but a bolt works for now. ![[Image: IMG_0337.jpg]](https://lh6.googleusercontent.com/-Hp0QwEqo3oI/UKWgr7kdWBI/AAAAAAAAAyM/S9y3n12ip_g/s1280/IMG_0337.jpg)
Free advice is worth exactly what you payed for it.
Greg |
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