08 August, 2020

Trouble with updating version of GO on my Linux box

I had a little trouble with updating my version of GO.

I started running the following commands

sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf go1.14.7.linux-amd64.tar.gz

Now I should be done and ready. When I ran

go version

the old version number was reported. This is strange. My solution was to run the commands

which go
whereis go

to find out where GO was being referenced. After deleting all the references I was finally able to install the new version.

02 August, 2020

Comparing Cura profiles

Today, I want to test the differences between the Cura 'Standard Quality' profile and Chuck Hellebuyck's profile 'Cura for Creality Printers'.

Plan

Load the build plate with a few simple models.
Slice with the default 'Standard Quality' profile.
Print the models
Slice with CHEPV4.6.x_0.20(Good) profile
Print the model
Compare results

Actual

Room

22C
Humidity 52

Run 1 - Standard Quality

Preheat the hot end to 190C
Preheat the bed to 70C
Note: Took about minutes to get the hot end and bed to temperature.
Slice the models

Estimates

time 1 hours 17 minutes
material PLA 10g - 3.34 m

hot end to 200C
bed to 60C
Notes: Cura gave warning about the model not being manifold.

OctoPrint

estimates a time of 50 minutes
Octolapse running

End of run 1 notes

Lots of blobs, zits, and stringing when the hot end moves away for a picture.
Little stringing between objects
Print Time

OctoPrint 1:25:21
Cura with OcotoPrint connection 1:25:21
Slack notifications 1:25

Raspberry Pi temperature ranged from 38C to 40C
No noticeable lifting of the model from the bed
skirt pulled away from the bed easily, Measured skirt thickness at several places. Values ranged from .19mm to .23mm.
Models popped off the bed with just finger strength.

EasyCalib3.stl

slight rounding of the corners of the base.
little z banding

TESTBLOKJE.STL

blobs from where the hot end moved away from the model. Most noticeable blobs were pointing in the direction the hot end moves away for Octolapse to take a picture.

OpenRC_Calibration_Cube.stl

The M3 nuts I have did not fit the holes. The holes are just too small.
Some blobs from Octolaspe

CHEPCalibrationCube.stl

Some blobs from Octolaspe
X face - 20.01 to 20.42
Y face - 20.10 to 20.34
Z face - 19.95 to 20.24

Run 2 - CHEPV4.6x_0.20(Good)

Preheat the hot end to 190C
Preheat the bed to 70C
Slice the model

Estimates

time 1 hour 39 minutes
material PLS 13g - 4.29m

OctoPrint

estimates 1 hour
Octolapse running

End of run 2 notes

Lots of blobs, zits, and stringing when the hot end moves away for a picture. The amount of artifacts seems lower.
Almost no stringing between objects.
Print Time

OctoPrint 1:42:52
Cura with OcotoPrint connection 1:42:52
Slack notifications 1:42

Raspberry Pi temperature ranged from 39C to 42C
No noticeable lifting of the model from the bed
skirt pulled away from the bed easily, Measured skirt thickness at several places. Values ranged from .17mm to .22mm.
Models popped off the bed with just finger strength.

EasyCalib3.stl

No Z banding

TESTBLOKJE.STL

very similar to run 1.
more blobs on the pyramid

OpenRC_Calibration_Cube.stl

I was able to fit a nut into a few but not all of the holes and slots.

CHEPCalibrationCube.stl

x face - 20.0 to 20.35
y face - 20.01 to 20.25
z face - 19.95 to 20.20

Resources

Cura Profiles from Filament Friday

Easy Material Settings Calibration Piece (EasyCalib3.stl)

walls are exact 1.0mm to see eventual over- or underflow
a little 45° overhang with a 1.0mm platform that shows warping and if you probably need to change the filament-fan speed
stringing in the tube or between tube and platform
a 0.2mm space between the cube and the cylinder to check with a paper if needed

Testing Block for setting belt tension (TESTBLOKJE.stl)

OpenRC Calibration Cube (OpenRC_Calibration_Cube.stl)

M3 nuts should fit

CHEP Calibration Cube (CHEPCalibrationCube.stl)

20mm by 20mm by 20mm

Wicks Works