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This was my approach. I bought a surplus South Bend 10L lead screw holder and milled some of it away so I could fit an extension to hold the pulley. Then cast a couple of brackets and set them at

Craftsman 12x36 lathe. The motors fit an angle NEMA 23 stand or I could make up something. Any ideas? Appreciate any help. Ralph -- Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta

Hi, Barry, Yes, that is an interesting setup, and it *does* lend itself to the addition of a simple CSS system. But you originally said you wanted to avoid using an Arduino. It should be possible to

Ant, do you have a link for " Variable step rates controlled on the fly by SPI are a common feature on drivers currently available."? What drivers? Everything I am seeing are only set by switches when

If I've understood correctly you can beat the 700rpm speed limit by changing from microsteps to full steps? Does it take full steps or could you get away with a low microstep rate such as two or four?

Charles, Well Xmas done well and good for anther year,had a few bush fires to keep us on our toes how did your celebrations go in the big smoke , came across these files from Digital machinist,are

A very nice job. The benefits are enormous, Well done to you and Richard UK. -- John

Hello, All, I haven't been on the site much, as I have been working trying to finish my RELS construction. I finally got it done, but not yet debugged. Photo below is of the "smoke test", where I

The math is pretty simple. Assume at 700 RPM you still have enough torque to move the table against the cutting load (unlikely unless the motor is large enough). At 700 RPM with 0.1" per rev it's 70

Need to do the math - 700 rpm with a 10:1 pitch lead screw means the lead screw is turning at 70 rpm, close to 1 rps - do the math to see if there is enough speed to do what you want, or enough torque

That's interesting information, thank you. I mean the whole post but didn't want to quote it all for brevity. I kinda understand as I'm familiar with some of the concepts already but I'll have to

Sorry. Meant to type Size 17. My router uses size 23 micro-stepped to 1600 steps per rev onto 10TPI lead screws. Even with full steps that's still 0.0005" position accuracy. The Mill has a Size 34

What is a "size 15" motor?

My first 3D printer was built in summer of 2014. An extruder fastened in place of the router on a JGRO self built CNC router. I used MACH3 to interpret the Repetier sliced G-Code. The results were by

Of course for 3D printing movement is more important than torque. Ralph

Micro-steppers tend to run out of torque at around 700 RPM in general. It's the physics of the design. Two things have to happen to make them turn. You have to change the direction of the current

Hello Ralph Am I correct to assume you mean torque when you say work? They are geared down to move scopes. Some hefty bits of kit with counterweights, but as well balanced as the specific mount can

Whilst price performance are important, supporting a favoured bit of existing software is a compelling reason to choose one hardware base over another. ???

1. Most certainly true although, as you show, you can sand cast your prints as well. PLA prints are cheap to make but it does take awhile for some forms. Of course you only need a very light fill on a

I'm surprised, what speed is that? Smooth and quite is what the the new driver modes do well using clever microstep control. Spread, stealth, chop. ???