Marvin was printed in:
Printer: Prusa i3 steel
Sliced: Slic3r
Material: PLA
Temperature: 187c
Bed: 55c
Layers: 0.15
nozzle: 0.4
Thank you in advance, I appreciate the help.
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I am not sure, but it seems to be a cooling issue. Did you have an extruder fan running? If you didn’t, there’s your problem. The layers look too melted together.
I had a fan running from after the third layer.
I guess the fan was pointing at the front of marvin? Was is on full speed?
You could use a second one, at the exact opposite, and try printing at around 180°C, also try to play with the minimal layer print time (i use something like 10 to 15s), it ensures you’re not printing hot over an already hot layer, and it gives the previous layer time to cool down.
I didn’t touch Slic3r in a while, but if you want to try cura, i know it offers an option to lift the nozzle from the part to respect the minimum layer print time, but often the nozzle droops some filament, and you need some cleaning, but the part is ok.
And if it’s not enough, try printing more than one marvin at a time, it helps because it effectively increases the layer print time, giving same results as above.
You also seem to have Z-wobble, a usual issue with threaded rods printers. It can be solved in different ways, but first thing is, let the top of the threaded rods free (don’t use a bearing to hold it), the top must be wobbling, so that the movement is not transfered to the X Carriage.
Cheers
Miro
5
Pic 4/5 shows, to me, some Z axis wobble. Print looks to be to hot, so either slow down or improve cooling(depending how your print fan was designed) print temperature is fine i usually print PLA at 210-220 from multiple sources. Also try printing at .2 layer.
Depending on your Z axis i always stick to even numbers of layer height like 0.18 0.14.
Hope some of this helps.
Hi thanks for the advice. This time I printed at 180 c, removed the bearings on the top of the z axis and printed 2 together, I didn’t add an extra fan yet as my current setup doesn’t have space for one, but I will add one in the coming weeks.
Thanks, any further advice is much appreciated.
@jpage @ do you have any tips for a nice Marvin print on a Prusa i3 steel?
