Hello, I have make a delta printer.

3D Printing
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1

Hello,
I have make a delta printer.
I have uploaded on my arduino mega the repetier firmware and I have try to move the stepper: it’s works without problem.
Before I calibrate the printer, I have try to extruder.
I have buy a e3d extruder (I don’t say it is a chinese compatible, I have buy it on amazon, XSOURCE store).
I have turn on the extruder but I have this problem:
if I use this extruder without fan on the body, the temperature got on 200 °C, but the filament heat soon and the endpoint do not extrude (and the junction bowden on the extruder melts).
If I use this extruder with a body fan, the extruder don’t pass 120 °C (in this case the firmware turn off the extruder with “dec” alarm).
Do you can help me to use this extruder?
I connect the fan directly 12Vdc.
Thanks

2

Is there a shroud around the body from the fan?

3

Hello @Keith_Applegarth ,
I have used this: http://www.thingiverse.com/thing:839620
I have printed it with PLA. If I turn off the fan the PLA print do not attach the extruder.

4

I believe , if this was a genuine E3d, it should have come with a blue fan shroud that clips onto the heat sink, with a 30mm fan. If this fan shroud is cooling the hot end you can wrap it in ceramic + kapton tape to insulate it, and help it keep its temp. Also you will want to calibrate your hotend using pid autotemp calibration.

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@PrintinAddiction , I suppose now that isn’t a genuine E3D because I don’t have a blue fan. I can use autotemp calibration with my extruder? It’s works on repetier firmware? If I buy another extruder, do you recommend E3D or E3DLite?

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It is the fan shroud (the part you printed from thingiverse) that is blue, the fan is 30mm and is black.

If you are using Marlin, then I know you can use the autopid functionality, I do not know for other firmwares (repetier?) though.

*Edit It appears that repetier firmware does support PID autotune:

Just an edit on the terminology so we are in sync (others have described this much better), the extruder is the part that pushes filament through, usually a hobbed bolt or notched cylinder, and feeds filament to the hot end.

The hotend is what you are discussing and is the part that contains, the heater block (square part), the heater element (cylinder with 2 thick wires coming out of it, and is attached to the heater block), heatsink which prevents the filament from getting too warm before it enters the heater block, the thermistor (also connected to the heater block but with much thinner wires) which reports the temp back to the firmware, and a nozzle.

I have 2 E3Ds and love them, I have not tried the lite version, but many people have posted positive results with them.

With the E3d or E3d lite, you want the fan always on 100%, otherwise you will definitely get heat creep.

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Ok. Before buy another E3d I can the function on marlin firmware. Thanks for the terminology.

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Actually, when I think about it, the hotend can be part of the extruder, its not just the mechanical motor and gear, but the whole system that extrudes the melted filament…