I simply couldn't resist the challenge when I saw similar modifications on google..
On the image, the guiding rods, tool holder and lead screw are missing (I am still thinking how to put all that together, so they are not mounted yet)..
It occurred to me that I could use a small worm gear for coarse movement, similar to this solution:
http://www.traderscity.com/board/pro...screws-174144/
However, it is not easy to find the suitable gear, so I decided to try and cut it myself, using the tool I made for threads for my 3D printer z-axis.
The tool was made from left over piece of lead screw (10x2mm), but since the nuts were made of delrin (acetal) there was no need for hardening the tool.
Now I want to harden it properly, to use it on brass and aluminium.
Does anybody know of the service (preferably in Melbourne) that could do it?
Or, in case I decide to do it myself, what would be the best way to heat up the tool?
Thank in advance!