hello there, it's me again. today i wantto show you how i set the correct extrusion temperature on mygerman reprap neo 3-d-printer. use a cad modeling software to sketch up a cuboid and convert it into stl or an objfile i used the creo parametric studentversion but you can also use other free programs or get the file onmy thingiverse link. make sure your cuboid is 100 mm in height and 25 by 25 mm in base area. import the stl or obj file intorepetier host.
now you got to make the necessaryadjustments in your slicing software. it's vital for the following steps: that the speed is already set correctly.if you are happy with your current speed settings leave them as they are. if not, first doa speed calibration and then this temperature calibration.when you buy a spool of filament, the producer of that spool supplies youwith a temperature range, in which the filament is to be printed.my spool's temperature range is said to be between 180â°c
and 210â°c. therefore you go into your slicing software tofilament settings and set the extruder temperature of thefirst and the other layers to 210â°c. go then to "print settings" and "layers and perimeters". note down yourlayer height on a spare piece of paper. set the number of vertical shellsto 1 and the number of horizontal shells oftop and bottom to 0. go then to
"infill" and set at "infill" the "fill density"to 0. in that way you will now just print thecuboid's outer shell. press now the "slicing" button. your cuboid gets sliced and you'll see the g-code.have you noted down your layer height? this is important now!! we now want our printer to decrease the extruder temperatureevery 10 mm by 5â°c.you can either do that manually or use theg-code
editor to insert g-code commands. for that we use for example the g-code command m104 s210 to set the temperature to 210â°c in a certain layer. now we have to findout in which layer to insert those commands. if you want to find out how many layersthere are in 10 mm of our print, we will haveto divide print height by layer height, or we use theg-code editor. the g-code editor displays theoverall number of layers
of the cuboid. if we want to print 10stages of different temperatures, we will have todivide that overall number of 666 layers by 10 which equals 66,6 and therefore about 67 layers.hence, we will have to insert that command m104 s"somethingsomething" every 67 layers, as demonstrated in the video after editing the g-code you can startprinting the cuboid.
here is a fast motion of the printingprocess. the first few layers look extremelyblotted. the further the temperature decreases, though,the better the layers are neatly and accurately printed on one another. hence,the quality of your print increases. if the perimeters are starting to show gaps, theextrusion temperature is too low. increase the temperature by 5â°cand watch whether this gapping continues.
if so, further increase the temperature. after your cuboid is printed completely, you'll have to examine it in orderto determine the perfect print temperature. the perfect print temperature is highenough so that the material is properly melted and low enough so that the material isneatly put on the print. therefore you will have to determinethe lowest layers where no impurities occur. this isyour perfect print temperature.
in my example i used different steps forthe different temperature decreases. at a temperature of 186â°c the layers began to look neat. the bestlayers showing no impurities whatsoever havebeen printed at a temperature of 177â°c. so this is my perfect extrudertemperature now! repeat this process from thattemperature at which the layers began to look neat and choose a smaller rate like 1â°c, 2â°c or 3â°c per
10 mm. remember to calibrate the perimeter again to achievefull accuracy. yeah that's basically it. i hope youenjoyed watching my video. if you have other methods and ideas how todetermine the perfect print temperature,
abs or pla for 3d printing,if you want me to do other videos oncalibrating a 3-d-printer or if you liked thatvideo or disliked it, just leave some comments for me.thank you very much for watching. i hope to see you again my channel andtake care!
