first router

[AJ_Mac2001]

Hi Jeff,

Your post Re. pulserates, PC's, and maximum feedrates on 3D finish toolpaths was a real eye opener.

Given what's available today at the hobbiest level/budget - what is the constraint to how fast you can machine a complex 3D toolpath. I don't really understand it all yet, but I take from your last post that the PC is the weakest link in terms of computing/processing the code fast enough. I've read the Mach 1 and 2 can process at 25 kHz and 45 kHz respectively. Can a newer PC match this rate of processing? Where is the bottlekneck liable to occur given Mach2 software, a newer PC, gecko driver setup, and suitable servo/encoder setup?

Or I guess the simpler way to ask this is where would you spend money to make your machine go faster? and how much faster do you think you could make it go?

Thanks for the reality check!

AJ

[AJ_Mac2001]

Beerfizz,

Thanks for the Mach2 excerpts. So far its sounds like it would cost about the same to drive the X-axis using: 1) two motors, 2 leadscrews, and 2drivers VERSUS 2) two lead screws, mechanical syncing between screws [timing belt], and one motor/driver.

Thks,
AJ

[Bloy2004]

From my readings throughout this site, I have found that many have had problems with using two slaved motors. Racking accumulates unless the system is constantly refreshed/reset. Maybe with servos this is minimal. I believe that two shafts with one common motor with a timing belt and pulleys is best though the cost in time and money may be same. Worth the time though to set it up as such.