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October 2019

3D fault finding

Today was the first time since buying my CR10 back in July that have I had significant problems with it. I am currently 2 hours into a 8 hour print and everything seems to be going well (fingers crossed).

The fault appeared to be an issue with extrusion with a very patchy and inconsistent amount of filament being extruded. This resulted in a few failed starts and then once I had got it printing a bad layer about an hour into the print which caused the print to fail.

IMG_20191027_155818

Rather than ranting about wasting a morning with failed prints I thought I would run through the troubleshooting routine I used to try and solve this.

  • Is the printing surface level? Most issues can be tracked back to a poorly levelled print surface
  • is the print surface clean and prepared for the print?
  • As this was a new filament which I hadn't used before was it at the correct temperature?
  • Was the filament loaded correctly? I took the filament out and reloaded it carefully again

At this point it still wasn't working as expected so before going further I went back to a filament which I knew worked well and tried with that - same result.

I was now starting to suspect a blockage with the hot end so I went into unblocking mode. After removing the filament I heated the hot end to the PLA recommended temp + 20oC and used the unblocking tool to carefully clean out the nozzle. Once the hot end had cooled to a lower temperature I reloaded the filament, warmed it back up to 215oC and manually extruded about 50cm of filament through it. This seemed to flow well.

Time for a new attempt at the print.

[Updated]

After a very tense nine hours of printing the final model came out very well with no obvious issues. There are a couple of random dark specks on the print which leads me to think that the nozzle is still not completely free from old filament. I am hoping that anything trapped might resolve it self over the next few prints.

IMG_20191028_075604



Model shown:
chart

Low-Poly Pikachu by FLOWALISTIK
Published on June 27, 2014
www.thingiverse.com/thing:376601

Comments

Filament review: PLA Pink Silk (kexcelled)

I have been using the PLA professional filaments from kexcelled for just over a year and thought I would do a quick review of the silk: pink.

This one can be purchased from 3dprintz.co.uk for £15.99 for 500g here.

I like the silk filaments, they have a very nice touch and feel to them. They are also stronger than standard PLA and have been a little bit more resistant to damage.

Printing has been consistently good and have always got good first layer adhesion on my heated bed using 3DLAC anti-warping spray.

The finish on top and bottom layers is really nice with the silk like effect. This filament prints beautifully in vase mode.

The colour is subtle - almost pastel and definitely works well where you are after a subtle colour rather than a big block of intense colour.

IMG_20191027_070325

The filament is translucent and looks very nice when lit from the inside or behind.

IMG_20191027_070342

With the translucent and slightly transparent nature of the filament you do see some of the fill as you look through it but I guess that would be expected, although there would be some mileage in tweaking the slicing settings to further improve this.

The details of the first print is below and the second print I designed:

Spiral vase by JJ76
Published on February 15, 2018
www.thingiverse.com/thing:2795194
Comments

Filament review: PLA Matte Moss Grey

Thank you to filamentive for sending me their tester pack to sample. Over the next couple of weeks I am going to print the same two prints and photograph under similar conditions.

The second filament to be sampled is their PLA Matte - Moss Grey

Both the vase and fish were printed at 210oC on a glass bed at 60oC with pritt stick to aid adhesion. Both were printed just with a skirt.

This is the first time that I have printed with a matte PLA and the results are somewhat surprising. Both the vase and fish were printed at 0.2mm layer height but with both prints you can not see any layers in the z-axis. As well as a matte style visual appearance the prints also feel different to the touch with almost a chalky feel.

The overall print quality of both prints is good and the fish had good bed adhesion with the intricate parts with out using a raft.


IMG_20191020_072648

The two prints are:

Fish Fossilz by muzz64
Published on January 18, 2016
www.thingiverse.com/thing:1276095

Spiral vase by JJ76
Published on February 15, 2018
www.thingiverse.com/thing:2795194
Comments

Filament review: PLA Comsic Blue

Thank you to filamentive for sending me their tester pack to sample. Over the next couple of weeks I am going to print the same two prints and photograph under similar conditions.

The first filament to be sampled is their PLA Cosmic.

Both the vase and fish were printed at 210oC on a glass bed at 60oC with pritt stick to aid adhesion. Both were printed just with a skirt.

I was very impressed with the results from both prints. The first layer adhered well with both and the fish bottom layer was near perfect.

The 'cosmic sparkle' is very nice and particularly looked nice under the red light (third photo).

I look forward to trying more of the Cosmic PLA.



IMG_20191015_213325
IMG_20191017_171626IMG_20191017_171635

The two prints are:

Fish Fossilz by muzz64
Published on January 18, 2016
www.thingiverse.com/thing:1276095

Spiral vase by JJ76
Published on February 15, 2018
www.thingiverse.com/thing:2795194

Comments