Problem with specific prints

Hello all,
I have a strange problem with my printer. when I try to print this The Z is not lifting enough, so the result is that my nozzle mashes around in the object. the first 5 or so layers are quite fine but from there the printer just destroys the object.
Also, when i try to print the extruder block of this The first layers (until the smaller section) prints just fine, but when the small section (with the holes for the bolt) starts printing it looks like i'm missing steps on X. the whole section skews about 1 cm negative.
I have been printing both objects fine before, so I haven't got a clue what I am doing wrong.

I am printing on an original mendel with a J-Head hotend. Below is my slicer config:

acceleration = 0
bed_size = 200,200
bed_temperature = 0
bottom_layer_speed_ratio = 0.3
bridge_fan_speed = 100
bridge_flow_ratio = 1
bridge_speed = 60
cooling = 0
disable_fan_first_layers = 1
duplicate = 1
duplicate_distance = 6
duplicate_grid = 1,1
end_gcode =
extrusion_axis = E
extrusion_multiplier = 1
extrusion_width_ratio = 0
fan_always_on = 0
fan_below_layer_time = 60
filament_diameter = 3.15
fill_angle = 45
fill_density = 0.4
fill_pattern = rectilinear
first_layer_bed_temperature = 0
first_layer_height_ratio = 1
first_layer_temperature = 190
g0 = 0
gcode_arcs = 0
gcode_comments = 0
gcode_flavor = reprap
infill_acceleration = 50
infill_every_layers = 1
infill_speed = 60
layer_gcode =
layer_height = 0.45
max_fan_speed = 100
min_fan_speed = 35
min_print_speed = 10
notes =
nozzle_diameter = 0.5
output_filename_format = [input_filename_base].gcode
perimeter_acceleration = 25
perimeter_speed = 30
perimeters = 3
post_process =
print_center = 100,100
retract_before_travel = 2
retract_length = 1
retract_lift = 0
retract_restart_extra = 0
retract_speed = 30
rotate = 0
scale = 1
skirt_distance = 6
skirt_height = 1
skirts = 1
slowdown_below_layer_time = 15
small_perimeter_speed = 30
solid_fill_pattern = rectilinear
solid_infill_speed = 60
solid_layers = 3
start_gcode =
support_material = 0
support_material_tool = 0
temperature = 190
travel_speed = 130
use_relative_e_distances = 0
z_offset = 0


Any suggestions?
-----------------------------------------

---

Printing PLA on a Sells Mendel using a Wade extruder with a J-Head hotend.

Hi,
You say you have printed the parts ok before. Are you trying to print the same g-code as before or have you made new g-code files using a newer version of slic3r? Just curious.
Regards
Jan

I have done both. Generally I tend to generate new G-code just before each print, but just out of curiosity I trid to use an older version of slic3r. i have got the exact same results with both 0.7 and 0.7.2b.
I have just seen that 0.8.2 is out! I will try that later today..
However, this tells me that the g-code should be okay, so the problem may be in pronterface or marlin/sprinter (yes, I have tried both as well)

Have you verified the diameter of your current filament? Is it different then what you were using before?

Does your Z move freely up and down?

How about other simplier prints (forinstance just a block or something) do they have the same "mashing" affect of the nozzle running into it?

Dont know if I will be able to help, but those are just the things I would check if it ever happens to me.

---

Ryan
Quality Engineer & Hobbyist
thingsandtrains.blogspot.com

banthafodder7400 Wrote:
-------------------------------------------------------
> Have you verified the diameter of your current
> filament? Is it different then what you were using
> before?
Nope - same filament roll

> Does your Z move freely up and down?

Yes, no problems there

> How about other simplier prints (forinstance just
> a block or something) do they have the same
> "mashing" affect of the nozzle running into it?

I will try a calibration cube or something in the lines of that later

> Dont know if I will be able to help, but those are
> just the things I would check if it ever happens
> to me.


Any help is appreciated