Thanks guys! I so far have tried the calculation and it seems to have worked. Im still getting a little blobbing but Im tweaking the extra restart a little to see if that helps. The jamming has stopped as well.

First thank you in advanced for any advice , I have spent months due to my lack of knowledge in 3d printer building trying to get my dbot printer to work.

It seems that I'm having to use a large number to get my prints to stop having blobs and zits in my print.

Right now my retraction length is 13mm which is extremely high and acctually causes jams due to the filament retracting so far back.

I assum this is from another cause but I'm not sure what? Is it stepper settings for extrusion ? If so can I make small adjustments to fix it without throwing everything out of wack?

@dc42 in the gcode isnt that what m190 does ?

I finally figure it out, after it homed twice for some reason it killed the job.

I changed the config provided below for homeall and now its printing.

Now just have to tune the extrusion

G91 ; relative mode
G1 S1 X-240 Y260 F3000 ; course home X or Y
G1 S1 X-240 ; course home X
G1 S1 Y260 ; course home Y
G1 X4 Y-4 F600 ; move away from the endstops
G1 S1 X-10 ; fine home X
G1 S1 Y10 ; fine home Y
G91
G1 Z5 F6000
G1 Z-305 S1 F1800
G90
; Tell the firmware where we are
G92 Z0

Well did more testing seems its not based on the homing it based on the heated bed coming to temp or right when it switchs from telling it to finish heating the bead and start heating the nozzle

The process is upload, heated bed get to 65C , it homes and then says its finished

@deckman , Thank you!

Here is also part of the GCODE from one of the test cubes

M107
M190 S65 ; set bed temperature
M104 S215 ; set temperature
G28 ; home all axes
G1 Z5 F5000 ; lift nozzle

M109 S215 ; wait for temperature to be reached
G21 ; set units to millimeters
G90 ; use absolute coordinates
M82 ; use absolute distances for extrusion
G92 E0
G1 Z0.300 F7800.000
G1 E-2.00000 F2400.00000
G92 E0
G1 X120.004 Y115.787 F7800.000
G1 E2.00000 F2400.00000

@deckingman yeah seems to happen right after it homes. Im using a config generated by the configuration tool
; Relative positioning
G91

; Lift Z
G1 Z5 F6000

; Course home X or Y
G1 S1 X-305 Y305 F1800
; Course home X
G1 S1 X-305
; Course home Y
G1 S1 Y305

: Move away from the endstops
G1 X5 Y-5 F6000

; Fine home X
G1 S1 X-305 F360
; Fine home Y
G1 S1 Y305

; Move Z down until the switch triggers
G1 S1 Z-305 F1800

; Absolute positioning
G90

; Tell the firmware where we are
G92 Z2.5

; Uncomment the following line to lift the nozzle after probing
;G1 Z5 F100

Tried Slic3r as well same result, seems to have something to do with when it homes it have the first initial heating

Thank you in advanced for any help!

I setup my DBOT and it all ready to test print.

Im using simplfied 3d, I used the settings based on the build guide. When I go to upload and print the printer start the heating process. About 1min into the process the print shows 100% complete, the heaters get up to temp , the system homes and then nothing.,

Any Ideas?