Using new ColorFabb XT Transparent PLA

[chrisr 18]

Update:

ApolloTT, from a suggestion from Dim3nsioner. Finally, no blobs with XT. Combing was the problem. (Print settings I used in the photo)

 

http://umforum.ultimaker.com/index.php?/topic/8289-travel-retract/

 

[chrisr 18]

From my experience, white and red needs more attention to print as for other colors.

Hmmm, so if I'm reading it right the nozzle cools off when the fan speed is higher then 40%, that could be an issue.

The flow direction of the outlets are aimed a bit on the nozzle then.

Did a little test on my UMO just now, when I prime my nozzle at 240C with XT, and blow a fan onto the nozzle, the XT curls upwards and sticks to the nozzle.

I use this fan mount on my UMO for XT:

 

 

It blows air 30 degrees toward the nozzle and straight down.

Did the same test as above, now with the fan I normally use set at full speed, primed the nozzle again with XT at 240C, it doesn't curl.

 

Now that's interesting! :smile:

The ZETOFF angles the airflow very much directly towards and @ the nozzle area. I wonder if that's "just not helping things" edge curling wise for XT. With PLA it works very well... now you've got me thinking Harold!

I will next try -

1). Replacing the stock UM2 fan shroud.

2). Some transparent XT from colorfabb

Determined to get prints looking as good as yours with XT ;-)

 

[hreedijk 4]

Let me know your progress, good you get rid of the blobs.

I have combing enabled though, but if it helps with your printer....

Printed this part yesterday evening with XT orange:

 

[Nicolinux 288]

Hreedijk,

Could you post your print settings for this part? It looks perfect!

thx.

 

[hreedijk 4]

Sure Nicolinux, here they are:

layer_height = 0.12

wall_thickness = 0.8

retraction_enable = True

solid_layer_thickness = 1

fill_density = 100

nozzle_size = 0.4

print_speed = 50

print_temperature = 242

print_bed_temperature = 58

support = None

platform_adhesion = Brim

filament_diameter = 2.86

filament_flow = 100

retraction_speed = 40

retraction_amount = 4.5

retraction_min_travel = 1.5

retraction_combing = True

retraction_minimal_extrusion = 0.02

retraction_hop = 0.2

bottom_thickness = 0.2

object_sink = 0

travel_speed = 150

bottom_layer_speed = 40

infill_speed = 0.0

inset0_speed = 0.0

insetx_speed = 0.0

cool_min_layer_time = 7

fan_enabled = True

skirt_line_count = 4

skirt_gap = 3.0

skirt_minimal_length = 150.0

fan_full_height = 1

fan_speed = 30

fan_speed_max = 30

cool_min_feedrate = 0

cool_head_lift = False

solid_top = True

solid_bottom = True

fill_overlap = 18

spiralize = False

simple_mode = False

brim_line_count = 10

fix_horrible_union_all_type_a = True

fix_horrible_union_all_type_b = False

fix_horrible_use_open_bits = False

fix_horrible_extensive_stitching = False