Re: Silicon carbide aggregate?
Originally Posted by
joeavaerage
Hi peteeng,
That is the general perception but I'm far from convinced it reflects the truth, it certainly isn't cheap but its not prohibitively expensive either.
You may recall some time ago I posted that I had 'made to budget' welded steel extension from the saddle of the Z axis to the spindle mount. Despite
being 100 x 100 x 9 RHS its still a 'little wobbly' when the pressure comes on. It was what I could afford at the time, but I'm now thinking of revisiting it and building
a new one.
This would be a perfect case for two or more different fabrication/manufacturing strategies to be compared along side each other. The part has a 275mm x275mm base
to a 200mm x 150mm nose and about 350mm between base and nose. It would not be a hugely expensive part to make.
I will give it a little more thought and do some rough sketches. You and others might like to chime in and contribute. If I do so I'll start a thread and see where it leads.
Might be a good time to compare cast iron, epoxy granite, some sort of concrete mix, welded steel and maybe even glass or carbon fiber when talking about a fairly simple
and managable part of modest dimensions.
Craig
Craig,
Your "headstock" is definitely the weak area for your machine. It looks comical (meant in a nice way) compared to the rest of your machine.
A good area for laser cut steel weldment. And consider filling with a vibration damping material.
7xCNC.com - CNC info for the minilathe (7x10, 7x12, 7x14, 7x16)