Is Marvin supposed to be solid filled ?

[JakG]

Just starting with 3D Hubs and I’m printing out my first Marvin. It has been sliced on Slic3r as a solid with rectilinear fill. Is Marvin supposed to be solid filled ? Just checking.

Unfortunately, my first attempt in PLA did not print out the ring - it was just a blob. See picture.

My second attempt is set to a lower filament temperature, to see how that goes.

[JakG]

Still printed a blob instead of a keyring, when printing my blue PLA at 195 c. Any suggestions ?

I don’t have a cooling fan on my hotend.

[Filemon]

Hi @JakG, indeed from what I can see in the picture, the temperature is set to high. Very curious to see your retrial. It can also help listing your other settings so the community can help you out in more detail

[Filemon]

Oh sorry, missed this comment. Without cooling fan this is indeed very difficult. I agree this is the issue. Maybe try print the final part at very low speeds? Tried that?

[Joerg_4]

Without a fan it will be really hard to print the Marvin correct.

One solution may be this:

In Cura try to use the option ‘cool head lift’ in Expert settings and set the ‘Min layer time’ to 5+ seconds. May be you shall combine it with the plugin ‘Tweak at Z’ in order to reduce the temperature only for the ring.

hth

good luck

[James_2]

@JakG - try with a desk fan next to it - once the print head temp stabalises it should be better.

The other trick is to print two - you get some stringing, but the print head moves away and lets the last layer cool.

print at the lowest temp your filament can go!

[pivan]

also, try to use the right infill for the object (15-30% is ok, and 25% is a good starting point)

This way there will be less material that need to cool down, cooling will be better and quality improved

depending on the nozzle you may want a fan both on your nozzle cold end part, and one at a 45° angle or similar to cool down printed PLA (a 60x60mm fan, a pair of 50x50… lot of airflow )

[CreoBot]

I use Cura and I did a number of tweaks to get ring to print.

Analyze print by layer and find what layer it begins to print the ring. Use Tweak at Z and the layer before it starts printing the ring, I slowed print 50%, turned hotend temp down, and set part cooling fan to 100%. Since you don’t have a part fan, do as suggested and use a desk fan.

I suggest that the next print you do, is a mount for a part fan

[dramaprint]

I printed with white PLA,two fans blowing from sides all the time.The problem was to cool this print so i reccomend you print two at the same time to allow for cooling and better adhesion