threaded rod or T8 Lead Screw

[Fluxcore]

I was wondering what would work better . Be quieter , smoother .
And also , what changes I would have to make in the firmware to go from the supplyed threaded rod to Lead screws .

[Mark]

I think just change the steps per unit will be ok.

[Fluxcore]

I think just change the steps per unit will be ok.

Ya thats what I will need to do , but I was wondering if anyone here has done that and where to I have to do it in the firmware. Also what good settings are .
I prefer to use ACME type threads as I feel there the better thread to use in this application and thats what Lead screws are . Now that the price of Lead screw
type rod has droped I realy cant figure out why Geeetech don't use it in there kits . I have some sets of Lead screw type rod on the way so I am going to try to learn what i need to do to change out the continues type of rod that shipped with the kit. I may be wrong about the Lead screw /ACME vrs the type of rod i got with the kit and if so I will look forward to learning .

[Mark]

check the settings here:

QQ截图20160401113754.jpg (219.47 KiB) Viewed 16847 times

[Fluxcore]

// delta speeds must be the same on xyz
#define DEFAULT_AXIS_STEPS_PER_UNIT {78.74, 78.74, 2560, 95}
//#define DEFAULT_AXIS_STEPS_PER_UNIT {78.74, 78.74, 2560, 800}

this are the settings from the copy of firmware I have got from here ^

This is something I found here . http://www.printrbottalk.com/forum/view ... f=21&t=502

"Since the thread pitch of the Acme screws is different than the standard 5/16" threaded rod you will need to adjust your Z steps per mm calibration. The theoretical ideal value is 2015.748031496063. Enter that value into your firmware and recompile+upload, or use it in an M92 command as part of your Start GCODE."

So I guess I change the 2560 out for 2015.748031496063 . But It would be nice to be able to check that .

[Fluxcore]

I found this Calculator that is a big step forward in my search .
http://prusaprinters.org/calculator/

[Fluxcore]

That calc gives me a z of 1600.00 .

[Mark]

that's really convenience, quite a useful tool for calculating those steps.