December 7, 2006
I’m a first timer and I am doing research for the leadnuts and couplers that I am going to use building David Steele’s CNC Router table (Solsylva.com). I'm thinking about going with ½-10 Acme Rod and ½-10 Acme Couplers. I wanted to get a few opinions from you all regarding accuracy before I definitely decide to go that route.
If I use rodding that is 10 teeth per inch, then I assume that the motors will travel quicker up and down the axes then if I was to use more teeth per inch. Am I right about that?
But what I really need is precision while I am cutting, so I am thinking that I need more teeth per inch. Is 10 tpi pretty precise? What are you guys ideas about that?
Also, I was at McMaster Carr pricing Acme Rod and Acme Couplers.
The Acme rods come in:
Grade B7 Alloy Steel 18-8 Stainless Steel
1018 Carbon Steel
Heat Treated 4140 Alloy Steel
The Acme Couplers come in:
Will it matter what type of material the rods and couplers are made of? The only advantage I could think of was brass is non magnetic and I was thinking that this would help in reducing noise that could interfer with signals.
Any input would be greatly appreciated. Thanks everyone!