I`m cheesed off, I`ve just taken a nice video of me cutting the wheel with my new CNC rotary table and the damn file won`t open! It says the file is corrupt or different format. All the other videos will open so I haven`t a clue why this one won`t!
Anyway, it’s not as exciting but here are a few pictures and it is much more successful than last! I`m really pleased. Here is what has changed since my last attempt:
1. Clockmakers CZ120 engravers brass, I would never bother trying with soft brass again!!
2. A new sharp hardened cutter
3. My new CNC rotary table which worked a treat!
I`m really pleased. I`m going to re-do it as I still feel the teeth are a touch spiral which indicated my cutter was not centre. I spent a good 10 minutes eyeballing this centre with a dead centre in the rotary table and locking the Z-axis to position. I`m certain it was centre so I need to work out what was wrong, perhaps the cutter is not sitting parallel?
It could possibly run as it is only a fraction out and barely noticeable but I think I`ll go for a re-make. Just need to figure how to get this bob on centre height.
These pictures are still on the rotary table with the teeth just cut. They have since been dressed and cleaned up. The difference is the flakes that are still on the photos just flick off and rub off with fine paper where as with the soft brass in my last attempt at cutting, the brass flakes left behind were smudged and could not be cleaned. I`m not going any further with this wheel yet as I would prefer to start over a fresh but I`m confident the tooth profile is OK so the cutter seems a success.
Chris