Dividing head or rotary table with plates?

[Shootymacshootface]

Really, I was not sure you could get that accurate with an RT.

There are no tolerance stacking errors if you stick to the math, 7.2, 14.4, 21.6, and so on.

 

[Janderso]

Ah, OK, I was thinking you would count 7.2 each turn, I can see room for error.
That's great! I watched Joe Pie's recent videos on setting up and using the RT.
I must admit, I got lost. I am the kind of guy that has to do it.
Hands on, I'll learn. Seeing what you did gives me confidence to venture out and start using it with the chuck.
I need to make the sacrificial mounting table for the RT. I also need to start using the Noga spindle mount indicator holder I got.
The RT has a straight shaft, no taper. Adds mounting options IMHO.

 

[Shootymacshootface]

Jeff, it's good to see you up and running again.

 

[Larry42]

Cat, I cast outside, only. Firing with propane in a home made furnace. It won't get hot enough to melt copper. I have a #11 graphite crucible (11# of aluminum capacity.) I've been watching the videos by olfoundryman, very good. My mold making has gotten better but still have some oopses. All the aluminum I use is scrap. I've found that extrusion AL machines really poorly, sticky! The best is automotive castings, probably a wide variety of alloys but all designed for casting. I've started using a commercial degassing chemical, now get less hydrogen bubbles.

 

[Larry42]

"I watched Joe Pie's recent videos on setting up and using the RT.
I must admit, I got lost."
Joe Pie has great videos, You just need to brush up on your geometry and trig to better understand them. The Machinist Handbook has a great section on math.