Malin Rich Cattell - G29 vs. G30 A Autocal

Hi,
I am running the Rich Cattell Marlin V 1.04 Firmware on my new Delta Printer. I added a Autoprobe with optical Limit Switch and it works great, 25 Iterations with the standard 0,03mm Accuracy parameter in Conf.h gave me the results:

Quote
Marlin
adj_RadiusA set to 0.50
c: -0.01 x: 0.00 y: 0.00 z: 0.00 ox: 0.01 oy: -0.01 oz: -0.02
radius:182.9137 diagrod:372.7500
Radius Adj Complete: Yes DiagRod Adj Complete: Yes
RadiusA Error: -0.01 (adjust: 0.50)
RadiusB Error: 0.01 (adjust: 0.00)
RadiusC Error: 0.02 (adjust: 0.00)
DeltaAlphaA: 0.01
DeltaAlphaB: -0.04
DeltaAlphaC: 0.02
Z-Tower Endstop Offsets
0.0000 X:-1.18 Y:-2.14 Z:-3.27
-0.0125 0.0000 Tower Position Adjust
-0.0125 A:-0.08 B:0.23 C:-0.15
0.0125 0.0000 I:0.00 J:0.00 K:0.31
-0.0125 Delta Radius: 182.9137
X-Tower Y-Tower Diag Rod: 372.7500
Auto Calibration Complete

The Movement of the head is really flat. I am a bit confused about the G29 Autolevelling command which gave the following result after successful G30 A calibration (which is quite accurate if I check it with G30)and M500 for storing parameters:

Quote
G29
0.087 0.087 0.087 0.075 0.037 0.037 0.037
0.062 0.062 0.062 0.062 0.012 0.025 0.025
0.062 0.062 -0.000 0.062 -0.013 -0.013 -0.000
0.037 0.037 0.037 -0.013 0.037 0.025 0.037
0.062 0.050 0.037 0.037 0.037 0.025 0.037
0.025 0.025 -0.025 0.050 0.037 0.050 0.050
0.125 0.125 0.125 0.012 0.062 0.062 0.062

That does NOT look very equal. So, what is the difference between G30 an G29? Should I run an automated calibration before each print or just Recalibrate with G30 A from time to time or after minor mechanical changes/printer movement?

Thank you, I need a standard procedure...

Well since nobody wants to answer this, I'll give it a shot. G29 has proven to be inconsistent for most people. Most (myself included) just do the standard G30 A calibration and then call it a day, until the printer is moved or there's a considerable change in temperature. I keep the room where my printer resides between 18° to 24° C and have never had an issue with prints or had to recalibrate (been printing for 6 months now with my Kossel). I'm not sure how Johann got his autolevel to work so good (he can print on bare glass with PLA and no heat bed), though I assume the FSRs play a big part in that. Have you tried printing after running G29 yet? I would assume you did. If so, how were the results?

Cheers

sorry, I've just starting tackling this issue. first of all, where is v1.04? I've downloaded the GIT files from RichCattel Marlin but the version string in Marlin_main.cpp says 1.0.0.
In this version, G29 does probing moves but doesn't seem to affect the native positioning.
When I investigate the code, the bed_positions[] arrary gets filled during G29 but there is no reference to it anywhere else, which means it is not being used.

I'm so stalled on this bed leveling thing and getting tired of doing it by hand. (I will have to give G30A a try)
thanks
Matt

oops, never mind. Apparently the version string in the code is not updated.