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Nov 2014

Hi everyone,

I have a problem with the branded Fairphone case. I use a Replicator 2. In my cases, we can see holes. They are always at the same places.

I use Simplify3D with these parameters:

Layer: 0.15mm
Infill: 20% <- perhaps it should be changed to 10%
Number of shells: 3
Speed: 4800mm/min

By writing and verifying my parameters, I perhaps found what is wrong…

Please, let me know if you had same troubles.

One more case printed with those parameters

Layer: 0.15mm
Infill: 10%
Number of shells: 3
Speed: 4800mm/min

The problem is EXACTLY the same

Anyone could bring me some help?

Here is the result with these parameters… For the Technology case, the result is good… not perfect. I have quite a lot of strings and there are some tiny holes on the front side.

Then, I tried with the Fairphone branded case… As you may perhaps see (sorry for the quality), directly on the right of the Fairphone text, on the front side, you will notice many holes.

I am currently trying the corkscrew method (see below in this post).

@GloomySparker reduce your print temp to as low as you dare to get rid of the stringing and help the bridging.

The slower speed should help with this - but it is a fine line as you need to get good layer bonds and yet good bridging.

I always had to do a small amount of hand finishing with a scalpel and wet/dry sandpaper, but you want to keep it to a minimum!

Print is not completely finished, but it is already time for a feedback. I do not know if the case will be strong enough (I have not the habit to print using only 1 shell… even less with no infill), but the filament problem is almost completely resolved. The only parts that will need some clean up are the overhangs, which is obvious considering the way it prints using corkscrew printing mode.

The print is good but some tiny holes remain.

At this point, I am wondering a thing… How can I say that my nozzle needs to be cleaned / changed?

The case NEVER went totally printed… It seems that the filament slipt at a time of the print for an unknown reason.

I cleaned my nozzle with a 0.4mm guitar cord… When loading the filament, it is smooth.

I launched another print with these parameters except for the speed. I put 1200mm/min. I also changed material and case model.

At this time, I really do not know from where come all my problems.

From my point of view, it could perhaps be:

  1. Filament quality? (did not test the Fairphone branded case in another color)
  2. Room temperature (it is quite cold in the printer room)
  3. Dusty grip (would explain the last print, but not all the others)

Is there someone who could have a clue for me?

I’ll tell you tomorrow if my Day 1 yellow case printed well.

Thanks

I used Rectilinear infill. I am now using corkscrew method… which is not giving me results: the filament slips on the grip when printing the second hole of the case and the case is never printed out completely.

The Day 1 case had exactly the same problem: the filament did not grip when printing the second hole and the case never went out completely.

So… this is not the material nor the nozzle nor the model of the case.

PLEASE… HELP… ;-/

Does somebody could provide a working x3g for a Day 1 or branded case so I can test from where is the problem?

@GloomySparker sounds like a feeder issue … sorry I don’t know your printer that well - worth asking on specific forums for that printer - it was a makerbot rep 2? - have you done the extruder upgrade? - I hear once they have that upgrade then they are quite reliable. But slipping filament means that you are probably not quite getting the full throughput and there is no reason that the fairphone case would make it slip more than any other - except that the flow is fairly slow/small and so MB are slightly prone to heat creep on the filaments - some people blow a fan across the bed to cool down the hotend.

As I say - one for the MB2 specialists.

James

7 months later

Hey there Fairphone guys,

Franky (@jianghan_mao) just installed the new software for Makerbot and is wondering how to best print Fairphone cases with it. Have any of you already printed Fairphone cases with the new software? Any tips?

Best, Luuk