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oliver3d

Help with analyzing print & calibrating

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Hello guys!

I'm in need of some help with analyzing and calibrating my Ultimaker Original (with heated bed).

The issue:

Top view:

Here you can see that some of the layers are not touching.

Top

 

Left side view (fan is on this side):

left

Right side view:

right

Bottom view:

Here you can see that near the top (the round part at the bottom in this picture) there's something weird going on.

bottom

 

 

 

Print settings:

Material: PLA

Layer height: 0.2

Shell thickness: 0.8

Bottom/top thick.: 0.8

Fill density: 100%

Print speed: 50mm/s

Temp: 210C

Bed temp: 50C

Diam: 2.85

Flow: 100

Retraction speed: 40

Ret. Dist. : 5mm

 

 

What I have checked so far:

 

- The short belts are tight, and are not grinding against the walls.

- All the pulleys are tight.

- Filament is measured.

- Bed is leveled.

- Room should be "breeze free".

 

 

Could you guys help me with this? :)

 

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Hi Oliver,

Speed and temperature I guess.

A next one I would print with a finer layer, 0.1mm. It is a steep overhang, so give the printing filament a base to hold on to.

Lower the printing speed, to give the filament more cooldown time, and/or set minimal layer time to 10sec.

Depending on your pla, try a temp of 205 or 200.

Use as much fan as possible.

set a 0.6 or 0.5 wall thickness, Needs one pass. and use a infill of 25 % Should be strong enough for a fanduct and reduces the volume to cool down.

My best guess is, while printing you have noticed a lot of curling. After printing, the material shrinks and curls up a few mm of the print. pulling away the print from the nozzle, so there is nothing to drop the filament on to. making things worse. You can use a finger or screwdriver to check if the top of the print is hard or still soft.

Last but not least, normal Pla is a pretty low-tech material for a fanduct, my feeling is your tip surrounding the nozzle wont last long. better use something like abs or pla90.

Regards Kees

 

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Thanks for your comment and help!

I've now tried printing with a temp of 205C, and that seemed to help a bit. I also increased the minimal layer time to 10sec.

 

A next one I would print with a finer layer, 0.1mm. It is a steep overhang, so give the printing filament a base to hold on to.

 

Wouldn't 0.2mm layer height give it more give more of a base to hold on to, or am I thinking wrong?

Oh and yes, PLA will surely fail sooner than other materials, but this duct is just a temporary one as I'm installing a second extruder soon :)

 

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Thanks for your comment and help!

I've now tried printing with a temp of 205C, and that seemed to help a bit. I also increased the minimal layer time to 10sec.

Wouldn't 0.2mm layer height give it more give more of a base to hold on to, or am I thinking wrong?

Oh and yes, PLA will surely fail sooner than other materials, but this duct is just a temporary one as I'm installing a second extruder soon :)

 

About the layerheight..

Let's say you have 45 degrees angle (Overhjang). (your is flatter I guess).

A standard nozzle is 0.4mm, Imagine yourself a layerheight of 0.4mm.

A 45 degr. overhang would move the layer 0.4mm up and 0.4mm to the side ?!?

Theoretically it would be a nearmiss, the printed layer would not have much of a base?

With a 0.2mm layerheight you would get a 50% base?

with a 0.1mm you will have a 75% base? Right? ;)

+ a 0.1mm layerheight would give you less volume to cool?

Succes with the 2nd extruder!!!!!

 

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Hello again fellow makers! I have a new patient (aka print) that i would need some advice with :)

Diablo front

Diablo side

Print settings:

Material: PLA

Layer height: 0.2

Shell thickness: 0.4

Bottom/top thick.: 1.2

Fill density: 5%

Print speed: 50mm/s

Temp: 210C

Bed temp: 60C

Diam: 2.85

Flow: 100

Retraction speed: 40

Ret. Dist. : 5mm

 

 

Here you can see how it's come out like for others: http://www.thingiverse.com/thing:224878/#made

 

The 0.4 shell thickness might part of the reason, maybe 0,8 would be better.

 

What do you guys think?

 

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Hello again fellow makers! I have a new patient (aka print) that i would need some advice with :)

 

 

Print settings:

Material: PLA

Layer height: 0.2

Shell thickness: 0.4

Bottom/top thick.: 1.2

Fill density: 5%

Print speed: 50mm/s

Temp: 210C

Bed temp: 60C

Diam: 2.85

Flow: 100

Retraction speed: 40

Ret. Dist. : 5mm

 

 

Here you can see how it's come out like for others: http://www.thingiverse.com/thing:224878/#made

 

The 0.4 shell thickness might part of the reason, maybe 0,8 would be better.

 

What do you guys think?

 

From what I see, it seems to be built for a powder based printer. Doubt the details can be resolved well on a wire printer unless you print it really big.

 

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Hello again fellow makers! I have a new patient (aka print) that i would need some advice with :)

 

 

Print settings:

Material: PLA

Layer height: 0.2

Shell thickness: 0.4

Bottom/top thick.: 1.2

Fill density: 5%

Print speed: 50mm/s

Temp: 210C

Bed temp: 60C

Diam: 2.85

Flow: 100

Retraction speed: 40

Ret. Dist. : 5mm

 

 

Here you can see how it's come out like for others: http://www.thingiverse.com/thing:224878/#made

 

The 0.4 shell thickness might part of the reason, maybe 0,8 would be better.

 

What do you guys think?

 

It is a difficult model with severe overhangs. 0.4 shell is surely not enough. I would try 0.8 or 1.2, print speed 30

 

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