Ghosts of Delta Radius calibrations past

GarageBay9 · Post by **GarageBay9** » Sun Sep 13, 2015 3:47 am

Haven't posted in a while but am running into what I suspect is a delta tuning issue.

Have a Max v1 (mid-late 2013) that I've upgraded with an e3d v5. Somewhere along the way, I either had it calibrated or THOUGHT I had it calibrated and simply didn't try to print close enough to the edge to realize it was still off.

Long story short, I'm trying to use most of the bed and am getting lifting issues more than about 1/2 to 3/5ths of the way out from the center. I've been going through the calibration loop trying to bring down the edges relative to the center by reducing the PRINTER_RADIUS in Configuration.h, and reflashing, and while it appears to be significantly closer now when I go through the calibration loop, the lifting issues at the edges (same model, same slicer settings) don't appear to change. The first perimeter that goes down stops adhering properly when the hotend is tracing farther out.

What's concerning me is that the .91 Repetier firmware comes with a default value of 198.25 for the PRINTER_RADIUS variable. By a search here on calibrating that, dropping it by .05 reduces the edge height by about .001m. I've chopped it down to 197.2 (if memory serves) and still have the calibration / print performance disparity. That seems like a pretty big change to what should be a constant, without a visible result...

I THOUGHT I had this thing dialed in but apparently I don't have "the touch", so I'm sending up a flare for help.

Post by **geneb** » Sun Sep 13, 2015 9:58 am

Don't mess with the PRINTER_RADIUS value, change the HORIZONTAL_RADIUS value in the EEPROM. You want to start off at 130.

g.

GarageBay9 · Post by **GarageBay9** » Sun Sep 13, 2015 12:54 pm

Do I adjust positive or negative to lower the outer edge?

Tincho85 · Post by **Tincho85** » Sun Sep 13, 2015 12:58 pm

To lower the nozzle ---> increase horizontal radius
To raise the nozzle ---> decrease horizontal radius

GarageBay9 · Post by **GarageBay9** » Sun Sep 13, 2015 1:31 pm

AWESOME!

What kind of intervals would you suggest? I have about a .15mm lift at the edges I can't chase down.

GarageBay9 · Post by **GarageBay9** » Sun Sep 13, 2015 3:53 pm

GOT IT!

Awwww yeah... It's like a whole new printer.

Post by **geneb** » Sun Sep 13, 2015 6:44 pm

Where do we send the bill?

g.

GarageBay9 · Post by **GarageBay9** » Sun Sep 13, 2015 9:01 pm

Uh... 1060 West Addison, Chicago, IL, 60613.

Post by **geneb** » Mon Sep 14, 2015 10:58 am

I was kidding.

g.

KAS · Post by **KAS** » Mon Sep 14, 2015 1:45 pm

I think he just sent you to Wrigley Field.

Post by **geneb** » Mon Sep 14, 2015 3:27 pm

Erm. Go Sportsball!

g.

Welcome to the SeeMeCNC Community

Ghosts of Delta Radius calibrations past

Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past

Re: Ghosts of Delta Radius calibrations past